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Husqvarna Rider PR 17 Workshop Manual

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Workshop Manual
PR 17
PR 17 AWD
R418 Ts AWD
PF 21
PF 21 AWD
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Summary of Contents for Husqvarna Rider PR 17

  • Page 1 Workshop Manual PR 17 PR 17 AWD R418 Ts AWD PF 21 PF 21 AWD English...

  • Page 3: Table Of Contents

    Workshop Manual for the Rider PR 17, PR 17 AWD and PF 21, PF 21 AWD Contents Removing/Fitting the Power Steering ....43 Removing/Fitting the Cable Pulley ....44 Contents ..............1 Adjusting the Parking Brake Safety Instructions ..........3 PR 17 AWD, PF 21 AWD ......... 45 General Instructions ..........3...
  • Page 4 Hydraulic System ..........105 Hydraulic Hygiene ...........105 Hydraulic Oils ..........105 Fixing Oil Leaks ..........105 Keep the Hydraulic Oil Clean ......106 Working Methods ..........106 Component Locations PR 17, PF 21 ....106 Component Locations PR 17 AWD ....108 Component Locations PF 21 AWD ....109 Bleeding the Hydraulic System .......110 Power Steering ..........110 Replacing the Lift Cylinder ......110...

  • Page 5: Safety Instructions

    SAFETY INSTRUCTIONS Safety Instructions General Instructions No one may repair the rider unless they have read This workshop manual is written for personnel with and understood the content of this workshop general knowledge about the repair and service of manual. riders.

  • Page 6: Risk Of Sparking

    SAFETY INSTRUCTIONS Risk of sparking Sparking can occur when working with the battery and the thick cables in the starter motor circuit. This can cause the battery to explode, fire or eye injuries. Sparking in the circuit can not occur once the battery's power connection cable (usually the black negative cable) has been disconnected.

  • Page 7: Special Tools

    SPECIAL TOOLS Special Tools The following special tools are used when working on the rider. Special tools for the engine and transmission are specified in resp. Workshop Manuals. 506 66 48-01 Engine belt pulley remover. 506 56 76-01 Allen key 5/16" for loosening the engine belt pulley’s Allen screw (Kawasaki). 506 89 92-01 Counter to aid removing the engine belt pulley.
  • Page 8 SPECIAL TOOLS 506 66 48-01 506 56 76-01 535 41 32-01 506 89 93-01 The figures show how the special tools are used. English-...

  • Page 9: Laser Tachometer

    SPECIAL TOOLS Laser tachometer Safety • Laser product class 1. • Exercise care when the laser beam is on. • Do not look straight at the beam. Do not aim the beam towards anyone else’s eyes, either people or animals. •...
  • Page 10 SPECIAL TOOLS English-...

  • Page 11: Specifications

    SPECIFICATIONS Specifications PR 17 PR 17 AWD R418 Ts AWD Dimensions and weight Length, base machine, mm/ft with tow hook 2 030/6,66 2 030/6,66 2 030/6,66 Length with CT 112, mm/ft with tow hook 2 400/7,87 2 400/7,87 2 400/7,87 Length with CT 122 Width, base machine, mm/ft 880/2,89...
  • Page 12 SPECIFICATIONS PR 17 PR 17 AWD R418 Ts AWD Oil volume, total including hydraulic system, 3.2/3.4 3.2/3.4 3.2/3.4 litres/US qt Electrical system Type 12 V, negative 12 V, negative 12 V, negative grounded grounded grounded Battery 12 V, 24 Ah 12 V, 24 Ah 12 V, 24 Ah Main fuse...
  • Page 13 SPECIFICATIONS PF 21 PF 21AWD Dimensions and weight Length, base machine, mm/ft with tow hook 2 080/6,82 2 080/6,82 Length with CT 112, mm/ft with tow hook 2 450/8,04 2 450/8,04 Length with CT 122 2 550/8,37 2 550/8,37 Width, base machine, mm/ft 900/2,95 900/2,95 Width with CT 94, mm/ft...
  • Page 14 SPECIFICATIONS PF 21 PF 21AWD Electrical system Type 12 V, negative grounded 12 V, negative grounded Battery 12 V, 24 Ah 12 V, 24 Ah Main fuse Flat pin, 15 A Flat pin, 15 A Fuse power outlet Flat pin, 7.5 A Flat pin, 7.5 A Spark plug Champion RCJ8Y...
  • Page 15 SPECIFICATIONS Cutting Unit CT 94 CT 103 Cutting width, mm/" 940/37 1 030/40,5 Cutting heights, mm/" 25-80/0,98-3,15 45-95/1,75-3,75 Blade length, mm/" 360/14 410/16 Guaranteed noise level, dB(A) Width, mm/" 1 090/42,1 1 120/44.1 Weight, kg/lb 46/101 53/116,8 CT 112 CT 122 Cutting width, mm/"...
  • Page 16 SPECIFICATIONS English-...

  • Page 17: Delivery And Dealer Service

    DELIVERY AND DEALER SERVICE Delivery and Dealer Service After the First 8 Hours Change engine oil. Delivery Service After the first 50 hours Fill the battery with battery acid and charge for four hours. Change the oil in the hydraulics and drive Fit the steering wheel, seat and, where system.

  • Page 18: 300-Hour Service

    DELIVERY AND DEALER SERVICE 300-Hour Service At Least Once Each Season Inspect the machine. Come to agreement with Clean the engine’s cooling air intake the customer as to what additional work is to (25 hours). be carried out. Replace the air filter’s paper cartridge Perform the 25-hour service.

  • Page 19: Service Schedule

    DELIVERY AND DEALER SERVICE Service Schedule = Described in this workshop manual. The following is a list of maintenance procedures that must be performed on the rider. Most of the = Not described in this workshop manual points that are not described in this workshop or the operator’s manual.
  • Page 20 DELIVERY AND DEALER SERVICE Maintenance Page Daily Daily Weekly Maintenance mainte- mainte- mainte- least interval in hours nance nance once a nance before after year 100 300 Clean around all belts, belt pulleys, etc. Lubricate the belt adjuster (nipple) Lubricate the seat adjuster Lubricate all cables Lubricate the safety catch in the cutting unit...
  • Page 21 DELIVERY AND DEALER SERVICE Maintenance Page Daily Daily Weekly Maintenance mainte- mainte- mainte- least interval in hours nance nance once a nance before after year 100 300 Check the play in the engine valves Check whether the oil needs 4, 5) changing in hydraulic system (every 200 hours).

  • Page 22: Delivery Procedures

    DELIVERY AND DEALER SERVICE Delivery Procedures To our dealers In conjunction with the delivery, you shall also give A well performed pre delivery service is the first the customer the information required to handle step towards an active after-sales market. and maintain their machine in a safe manner.
  • Page 23 DELIVERY AND DEALER SERVICE Packaging and Unpacking The machine is normally packed using special packaging when delivered from the factory. This packaging is comprised of a wood base with a strong cardboard top section, all held together with plastic wrapping. WARNING! Handle the transport box carefully.

  • Page 24: Battery

    DELIVERY AND DEALER SERVICE Battery WARNING! Actions with acid contact External: Rinse thoroughly with water. Internal: Drink large quantities of water or milk. Contact a doctor as soon as possible. Eyes: Rinse thoroughly with water. Con- tact a doctor as soon as possible. The battery emits explosive gases.

  • Page 25: Steering Wheel

    DELIVERY AND DEALER SERVICE Steering Wheel • Fit the steering wheel with the steering rod on the steering column. Choose a suitable height position. • Thread the Allen screw into the thread of the steering column. Work the wheel and tighten the Allen screw so that it reaches the bottom of the thread.

  • Page 26: Check The Oil Level In The Hydraulic Tank

    DELIVERY AND DEALER SERVICE Check the Oil Level in the Hydraulic Tank Remove the transmission cover. Loosen both screws (one on each side) and lift off the transmission cover. Leave the cover removed for now. Transmission cover Check that there is oil in the hydraulic tank. PR 17, PF 21.

  • Page 27: Checking And Adjusting The Cutting Unit

    DELIVERY AND DEALER SERVICE Checking and Adjusting the Cutting Unit Performed after checking the tyre air pressures. See ”Adjusting the Unit’s Parallelism and Cutting Height” on page 86. Test Running Fill with petrol. The engine should be run on a minimum of 87-octane unleaded petrol (not mixed with oil).

  • Page 28: Engine Speed Regulator

    DELIVERY AND DEALER SERVICE Check that the cutting unit works and that no unusual sounds are heard. Using the lever, the cutting height can be adjusted in 7 different positions. Cutting height setting Check that the hydraulic cutting unit lift is functioning.

  • Page 29: Design And Function

    Husqvarna Riders are a series of large capacity In addition, the Husqvarna Riders can also be riders. It is available in several sizes, from the equipped with various accessories, such as moss smallest Rider 11 to the largest PF 21 AWD.

  • Page 30: Cutting Unit

    DESIGN AND FUNCTION Cutting unit PR 17 and PR 17 AWD can be equipped with three different cutting units. CombiTurf 94, CombiTurf 103 and CombiTurf 112 PF 21 and PF 21 AWD can be equipped with two different cutting units. CombiTurf 112 and CombiTurf 122 The Combi-unit, equipped with a BioClip- plug, finely chops the cuttings to fertiliser.

  • Page 31: Engine

    DESIGN AND FUNCTION Engine Husqvarna PR and PF are professional machines with twin-cylinder, air-cooled Kawasaki engines. Major engine repairs are not described in this workshop manual. This information can be found in Kawasaki’s manuals, which contain detailed information about adjusting and repairing the engines.

  • Page 32: Steering

    DESIGN AND FUNCTION Steering All mowers in the Rider series have articulated steering. The machines are equipped with hydraulic power steering. The steering force from the steering wheel is transmitted to the rear carriage via a chain and cables. This makes steering the rider both easy and precise. A Rider easily cuts around all obstacles on the lawn.

  • Page 33: Driving

    DESIGN AND FUNCTION Driving The PR and PF are equipped with a hydrostatic transmission that gives the driver complete control over driving. The speed is controlled using the forward or reverse pedals. The AWD machines are equipped with constantly engaged all wheel drive, which means a differential lock is not required.

  • Page 34: Cutting Unit

    DESIGN AND FUNCTION On the AWD-machines, the power transmission is supplied with pressure by a pump, which is integrated in the transmission. The hydraulic system includes the power steering and the equipment lift. Hydraulic pump Cutting Unit The entire Rider series is equipped with a front-mounted cutting unit in order to mow efficiently even in confined areas.
  • Page 35 DESIGN AND FUNCTION PR 17 AWD only has a mechanical equipment lift, while PF AWD has both a mechanical and hydraulic lift. The cutting unit can be raised or lowered in two different ways: with the mechanical lifting lever or with a hydraulic cylinder.
  • Page 36 DESIGN AND FUNCTION English-...

  • Page 37: Repair Instructions

    REPAIR INSTRUCTIONS Repair Instructions Removing the Engine Remove the engine cover. Loosen the battery’s retaining strap. Remove the protective cover. IMPORTANT INFORMATION Hold the battery cable bolts in place so that the electrodes are not strained. Loosen the battery cable connections. Then lift out the battery.
  • Page 38 REPAIR INSTRUCTIONS Loosen the cover plate over the muffler, two screws on each side of the muffler, and remove the plate. Remove the radiation guard under the muffler (only AWD). Muffler cover plate Loosen the exhaust pipe’s pipe clamp and the muffler’s four fastening screws. Then remove the muffler and the exhaust pipe.

  • Page 39: Fitting The Engine

    REPAIR INSTRUCTIONS 12. Use the 506 66 00 48-01 puller if necessary. 506 66 48-01 Engine belt pulley remover 13. Remove the engine fixtures, two on each side of the engine, and remove the engine from the rider. The engine’s fastening screws, right side. Mount not shown Fitting the Engine IMPORTANT INFORMATION...
  • Page 40 REPAIR INSTRUCTIONS Fit the belt pulley with tool no. 506 56 76-01 and tighten with a torque of 80 Nm/56 lbf. ft. Use tool no. 506 89 92-01 to counter. Place both belts in place on the belt pulley. 506 56 76-01 Engine belt pulley Fit the belt guide.
  • Page 41 REPAIR INSTRUCTIONS Attach the cover plate over the muffler, two screws on each side of the muffler. The muffler’s protective plate Press the fuel hose into place against the fuel pump and attach the hose clamp. Fuel pump Screw the cable from the starter to the start relay into place.

  • Page 42: Fuel Tank

    REPAIR INSTRUCTIONS Fuel Tank Removal WARNING! Petrol is highly flammable and environmentally hazardous. Exercise caution to avoid fire and spillage. Place a suitable container to collect the petrol. The tank holds about 17 litres (4.5 US Gal). Empty the petrol tank by removing the hose from the connector under the tank.

  • Page 43: Changing The Engine Oil

    REPAIR INSTRUCTIONS Changing the Engine Oil WARNING! The engine oil should be changed the first Engine oil can be very hot if it is time after 8 hours running time. It should then drained directly after stopping the be changed after every 100 hours of running engine.

  • Page 44: Checking And Adjusting The Steering Cables

    REPAIR INSTRUCTIONS Checking and Adjusting the Steering Cables The steering is governed by means of cables. After a period of use these can become stretched, which means the steering setting may have changed. Steering is checked and adjusted as follows: Remove the frame plate by loosening the screws (two on the power steering housing).

  • Page 45: Replacing The Steering Cables

    REPAIR INSTRUCTIONS Power steering and steering cables Replacing the Steering Cables Remove the power steering housing’s protective cover and the rubber bellows. Loosen the steering cables’ rear mount (1). Disconnect the electrical cables for the Remove the frame plate. lighting. Loosen the steering cables’...

  • Page 46: Removing/Fitting The Cable Pulley

    REPAIR INSTRUCTIONS Steering cables and cable pulley Removing/Fitting the Cable Pulley Remove the frame plate and skid guard under the machine. Loosen the steering cables’ rear mount (1). Remove the screw (2) and remove the cable pulley (5). Remove the bearing’s circlip (3) and tap out the bearing (4).

  • Page 47: Adjusting The Parking Brake Pr 17 Awd, Pf 21 Awd

    REPAIR INSTRUCTIONS Adjusting the Parking Brake PR 17 AWD, PF 21 AWD Check that the parking brake is adjusted correctly by placing the machine on a slope with the front and rear axles disengaged. Apply and lock the parking brake. When the machine does not stand still, the parking brake should be adjusted according to the following.

  • Page 48: Adjusting The Hydrostatic Transmission Cable

    REPAIR INSTRUCTIONS Tighten the nuts carefully to prevent damaging the adjuster screw. Refit the spring (A). The parking brake should be checked again after the adjustment has been made. WARNING! A poorly adjusted parking brake can result in reduced braking ability.

  • Page 49: Checking And Adjusting The Throttle Cable

    REPAIR INSTRUCTIONS Checking and Adjusting the Throttle Cable Check that the engine responds to throttle increases and that a good engine speed is attained at full throttle. If adjustments are necessary, they can be made as follows for the lower cable: Loosen the clamping screw for the cable’s outer casing and move the throttle to the full throttle position.
  • Page 50 REPAIR INSTRUCTIONS Remove the locking spring and loosen the throttle control's link joint locking spring, and remove the cable's bracket from the rear frame and the hydraulic pump's ball joint. Locking spring Clean, see ”Working Methods” on page 106. Mark and remove the hydraulic hoses from the couplings under the machine.

  • Page 51: Removing The Pendulum Shaft

    REPAIR INSTRUCTIONS 11. Remove the inner circlip (1) by the lower bearing (see illustration). The rear carriage is now loose and can be moved. Then loosen the outer circlip (2) and remove the bearings from below. Lower bearings 12. Remove the upper bearings from above; if they are stuck tap them from below.

  • Page 52: Replacing Bushings

    REPAIR INSTRUCTIONS Clean, see ”Working Methods” on page 106. Release the rear hydraulic hose from the rear axle. Hydraulic hose Remove the circlip and washer from the pendulum shaft and pull loose the rear frame. Remove the circlip and washer from the pendulum shaft’s inner mount (1) and pull the shaft out to the rear.

  • Page 53: Drive Axles

    REPAIR INSTRUCTIONS Fit the washer and circlip on the pendulum shaft (1). Connect the hydraulic hose to the hydrostatic transmission. Check that the controls and cables are properly adjusted, see, ”Adjusting the Hydrostatic Transmission Cable” on page 46. Check the neutral position contact and adjust if necessary.
  • Page 54 REPAIR INSTRUCTIONS • Remove the circlip. • Pull off the wheel with hub from the axle. • Take care of the keys, spacers and washers, keep a check of the number of washers, this can vary between sides. Circlip Release the front synchronisation link for speed from the front axle.
  • Page 55 REPAIR INSTRUCTIONS Release the hydraulic pipe from the top of the front axle. Fit the protective plugs. A small amount of oil will leak out even if the front axle has not been drained. Hydraulic pipe, top Release the parking brake cable from the front axle.
  • Page 56 REPAIR INSTRUCTIONS Rear front axle mounting 11. Loosen the stop screws (2) and remove the bearing on right-hand side. Right front axle bearings Assembly Assemble the front axle in the reverse order in relation to dismantling. Tighten the left side bearing before the right bearing.

  • Page 57: Rear Axle

    REPAIR INSTRUCTIONS Rear Axle Removal Jack up and block the machine Remove the rear wheels. Jacking up • Remove the circlip. • Pull off the wheel with hub from the axle. • Take care of the keys, spacers and washers, keep a check of the number of washers, this can vary between sides.
  • Page 58 REPAIR INSTRUCTIONS Release the hydraulic pipe from the top of the rear axle. Fit the protective plugs. A small amount of oil will leak out even if the rear axle has not been drained. Hydraulic pipe top Remove the 4 screws which hold the rear axle and lower the rear axle.
  • Page 59 REPAIR INSTRUCTIONS Synchronising Front and Rear Wheel Drives PR 17 AWD, PF 21 AWD The front and rear wheel drives must be synchronised so that when cornering the front wheels run at a higher speed than the rear wheels. When driving straight forwards all wheels should rotate at the same speed.

  • Page 60: Seal Replacement, Outgoing Shafts

    REPAIR INSTRUCTIONS Check, with the same steering wheel position as before, that the adjustment gives the desired result. If not, repeat from marking the tyres. 10. When the adjustment has been made, tighten the locking nuts on the adjuster rod. Seal Replacement, Outgoing Shafts PF 21 has separate hubs.
  • Page 61 REPAIR INSTRUCTIONS Insert a screwdriver between the seal and the shaft and pry off the seal from the shaft housing with a twisting motion. Pry off the seal Wrap insulating tape around the outgoing shaft from the beginning of the key groove and outwards until even the threads of the circlip are covered with tape.
  • Page 62 REPAIR INSTRUCTIONS Refit the circlip. The seal's circlip 10. Remove the insulation tape from the shaft and repeat the entire procedure as needed for the other shaft. 11. Replace the washer, spacing tube, key, hub, circlip, hubcap, and rear wheel. 12.

  • Page 63: Replacing The Hydrostatic Transmission Cable

    REPAIR INSTRUCTIONS Replacing the Hydrostatic Transmission Cable Removing the Hydrostatic Transmission Cable Remove the frame plate by loosening the screws (two on the power steering housing). Frame plate Loosen the hydrostatic transmission cable’s forward lock nut a 1/4 turn and remove the locking spring.
  • Page 64 REPAIR INSTRUCTIONS Remove the rear clip of the hydrostatic transmission cable. Cut the plastic tie Remove the spring lock and the hydrostatic transmission cable's rear link joint from the arm on the hydraulic pump. Rear link joint Lift off the link joint and pull out the cable.

  • Page 65: Fitting The Hydrostatic Transmission Cable

    REPAIR INSTRUCTIONS 10. Remove the entire hydrostatic transmission cable. Remove the hydrostatic transmission cable. Fitting the Hydrostatic Transmission Cable Screw in the front link joint on the new hydrostatic transmission cable and tighten the lock nut. Front link joint Run the cable through the rider so that it follows the same path as the old cable did.
  • Page 66 REPAIR INSTRUCTIONS Press in the cable casing in the forward fastener in the centre bracket. Forward mount in centre bracket Tighten the hydrostatic transmission cable clamp. Press the link joint onto its fastener and attach the locking spring. Front clamp Attach the link joint to the rear part of the hydrostatic transmission cable.
  • Page 67 REPAIR INSTRUCTIONS 10. Connect the rear link joint and attach the locking spring. Locking spring 11. Tighten the rear link joint’s lock nut. 12. Check the settings of the neutral position contact. See ”Micro Switch Pedal Arrangement” on page 103. 13.

  • Page 68: Bleeding The Hydrostatic And Hydraulic Systems Pr 17 Awd, Pf 21 Awd

    REPAIR INSTRUCTIONS Bleeding the Hydrostatic and Hydraulic Systems PR 17 AWD, PF 21 AWD Remove the transmission cover. IMPORTANT INFORMATION Ensure cleanliness. Used oil may not be reused. See ”Hydraulic Hygiene” on page 105. IMPORTANT INFORMATION The tank must never be run empty while work is underway.

  • Page 69: Bleeding The Hydrostatic And Hydraulic Systems, Pr 17, Pf 21

    REPAIR INSTRUCTIONS Bleeding the Hydrostatic and Hydraulic Systems PR 17, PF 21 Remove the transmission cover. IMPORTANT INFORMATION Ensure cleanliness. Used oil may not be reused. See ”Hydraulic Hygiene” on page 81. IMPORTANT INFORMATION The tank must never be run empty while work is underway.

  • Page 70: Transmission Maintenance

    REPAIR INSTRUCTIONS Transmission Maintenance Oil Change Most homeowners with gardens do not have the tools or experience needed to change the transmission oil. The transmission probably has a longer life than the rider itself, which means that being able to change the oil is not of major concern to the average consumer.

  • Page 71: Adjusting The Lever Housing

    REPAIR INSTRUCTIONS Adjusting the Lever Housing The machine and cutting unit shall be on a flat surface. Remove the plastic cover from the hydraulic valve block. Plastic cover Set the adjustment screws (1) and (2) on the drive disc so that the ends of the adjustment screws are even with the outer edges of their lock nuts.
  • Page 72 REPAIR INSTRUCTIONS Check that the screw for the chain seg- ment is in position to lift the micros- witch's spring arm. Adjust as needed with the adjustment screws (1+2) on the drive disc. Repeat step 5 if needed. Lower the cutting unit and set the microswitch so that it is definitely actuated by the spring arm.

  • Page 73: Replacing The Rear Drive Belt Pr 17, Pf 21

    REPAIR INSTRUCTIONS Replacing the rear drive belt PR 17, PF 21 Removal Lift up the cutting unit Remove the transmission cover. Unhook the spring (A) from the screw (B). Remove the hose holder in the middle and the belt guide for the centre belt. Pull off the centre belt from the engine's pulley and pull out the rear section.
  • Page 74 REPAIR INSTRUCTIONS Remove the cooling fan, it is held in place by a nut. Remove the belt from the hydrostatic transmission pulley. Pull the belt off of the engine's pulley and move it under the engine belt pulleys. Pull out the belt through the opening under the pivot bearing and past the belt tensioner's disc.
  • Page 75 REPAIR INSTRUCTIONS Fit the cooling fan. Check that the centre belt is fitted correctly on its front pulley and fit the centre belt on the engine's pulley. Fit the hose holder in the middle and the belt guide for the centre belt. Refit the spring (A).

  • Page 76: Replacing The Hydraulic Pump's Drive Belt, Pr 17 Awd, Pf 21 Awd

    REPAIR INSTRUCTIONS Replacing the Hydraulic Pump's Drive Belt PR 17 AWD, PF 21 AWD Removal Remove the transmission cover. Transmission cover Unhook the spring on the belt tensioner. Belt tensioning Remove the belt guide for the centre belt. Belt guide English-...
  • Page 77 REPAIR INSTRUCTIONS Pull off the centre belt from the engine's pulley and pull out the rear section. Rear part of the front belt Remove the nut on the cooling fan. Counter hold using a punch in one of the holes on the underside of the fan when the nut is loosened.
  • Page 78 REPAIR INSTRUCTIONS Assembly Pull the pump belt through the opening under the pivot bearing and on the outside past the belt tensioner's disc. Fit the pump belt on the engine's pulley, move it under the engine belt pulleys. Fit the belt on the pump's pulley. Pump belt under the engine belt pulley Fit the cooling fan.

  • Page 79: Replacing The Centre Belt

    REPAIR INSTRUCTIONS Hook the spring on the belt tensioner. Belt tensioner spring Replacing the Centre Belt Remove the hose holder in the middle (PR 17 and PF 21) and the rear belt guide for the centre belt (all machine types). Remove the centre belt and mount a new belt.

  • Page 80: Replacing The Front Belt

    REPAIR INSTRUCTIONS Replacing the Front Belt Dismantling The entire belt is removed according to the following when a snow blade is to be attached to the machine. Put the cutting unit in the service position. Pull the centre belt off of the centre pulley.

  • Page 81: Equipment Frame

    REPAIR INSTRUCTIONS Fit the centre belt in position on the centre pulley. Reset the cutting unit in the mowing Centre gear position. Equipment Frame Removal Remove the cutting unit, see ”Removing the Cutting Unit” on page 83. Push down the equipment frame and drop the catch.
  • Page 82 REPAIR INSTRUCTIONS Lower the equipment frame with the mechanical lever. Insert a small screwdriver or the like through the chain, so that it can not slide into the frame tunnel, and release the chain from the equipment frame. Chain bracket Remove the equipment frame's rear guide screws.

  • Page 83: Fitting The Cutting Unit

    REPAIR INSTRUCTIONS Fitting the Cutting Unit WARNING! Wear protective glasses when assembling the cutting unit. The springs that tension the belt can fly off and cause personal injury. Place the machine on a flat surface and apply the parking brake. Check that the lever for setting the cutting height is in the lowest position.
  • Page 84 REPAIR INSTRUCTIONS WARNING! Observe caution to avoid trapping your hand. Push the unit in so that the interior plugs touch the bottom of the equipment frame’s grooves. Lift up the cutting unit Fit the drive belt around the drive wheels of the cutting unit.

  • Page 85: Removing The Cutting Unit

    REPAIR INSTRUCTIONS Removing the Cutting Unit WARNING! Wear protective glasses when dismantling the cutting unit. The springs which tensions up the belt may break and cause personal injury. Carry out points 1-6 to put the cutting unit in the service position, see Service position for the cutting unit.

  • Page 86: The Cutting Unit's Service Position

    REPAIR INSTRUCTIONS The Cutting Unit’s Service Position In order to provide good accessibility for cleaning, repair and servicing, the unit can be set in the service position. The service position means that the unit is raised and locked in the vertical position. Placing in the Service Position Position the machine on flat ground.
  • Page 87 REPAIR INSTRUCTIONS Loosen on the cutting height stay and place in the holder. WARNING! Observe caution to avoid trapping your hand. Remove the drive belt and place it in the belt holder. Grip the front edge of the unit and pull forwards until it stops.

  • Page 88: Restoring From Service Position

    REPAIR INSTRUCTIONS Restoring from service position Grip the front edge of the unit and loosen the lock, fold down and slide in the unit. Replace the cutting height stay and the belt. Tension the belt with the belt adjuster. Fit the front cover. Adjusting the Unit’s Parallelism and Cutting Height When a new cutting unit is attached, you...

  • Page 89: Adjusting The Cutting Height Range

    REPAIR INSTRUCTIONS IMPORTANT INFORMATION When changing the cutting unit, you must readjust the parallelism and cutting height. Adjusting the Cutting Height Range Remove the plastic cover over the hydraulic valve block. Plastic cover Raise or lower the entire cutting range by screwing the nuts up or down.

  • Page 90: Changing The Belt On The Cutting Unit

    REPAIR INSTRUCTIONS Place a set of bathroom scales under the cutting unit’s frame (on the front edge) so that the unit rests on the scales. If neces- sary a block can be placed between the frame and the scales so that the anti- scalp rollers do not support any weight.
  • Page 91 REPAIR INSTRUCTIONS Unscrew the bolt holding the unit frame bracket. Remove the lock and pass the unit frame out. Remove the two bolts on the unit frame. Remove the screws on the cutting cover. Lift the unit frame and remove the cutting unit cover.

  • Page 92: Removing Blades With Bearings

    REPAIR INSTRUCTIONS Removing Blades with Bearings WARNING! Use gloves and protective eyewear when working with the cutting unit. You can recognise this unit by the fact that the collar on the bearing housing is located on the top of the unit’s cover. Remove the cutting unit’s upper cover, see ”Changing the Belt on the Cutting Unit”...
  • Page 93 REPAIR INSTRUCTIONS Remove the protective washer. Do not lose the wedge. Mark one end of the shaft. Push out the shaft with a puller. Tap out the bearing and remove the spacer. You can purchase the entire assembly, complete with shaft housing, shaft, spacer, and bearings.

  • Page 94: Sharpening And Balancing Blades

    REPAIR INSTRUCTIONS Sharpening and Balancing Blades WARNING! Protect your hands with gloves when working with the blades. Remove the blades as described in the previous section. Fix the blade in a vice and sharpen it Sharpening blades with a sharpening file. Balance the blade by: •...

  • Page 95: Electrical System

    ELECTRICAL SYSTEM Electrical system Wiring diagram PR 17 and PR 17 AWD Electrical system: component locations Numbers correspond to: Microswitch, hydrostatic transmission Microswitch, cutting unit Microswitch, seat Ignition lock Counter Start relay Engine connectors Main fuse 15 A Fuse 7.5 A 10.

  • Page 96: Wiring Diagram Pf 21 And Pf 21 Awd

    ELECTRICAL SYSTEM Electrical system Wiring diagram PF 21 and PF 21 AWD Electrical system: component locations Numbers correspond to: Microswitch, hydrostatic transmission Microswitch, cutting unit Microswitch, seat Ignition lock Counter Start relay Engine connectors Main fuse 15 A Fuse 7.5 A 10.
  • Page 97 ELECTRICAL SYSTEM English-...
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  • Page 102: Ignition And Starter Lock

    ELECTRICAL SYSTEM Ignition and Starter Lock Remove the right-hand side cover from the lever housing. Release the connector from the ignition lock by pulling it straight down. Remove the ignition key and the rubber seal. Remove the nut and the ignition lock. Assemble the parts in the reverse order.

  • Page 103: Replacing The Light Bulbs

    ELECTRICAL SYSTEM Replacing the Light Bulbs For information about the bulb type, see ”Electrical system” on page 10. Unscrew the two screws holding the cover on the power servo housing. Lift up the cover and turn it around the steering shaft. Unscrew the two screws holding the lamp insert.

  • Page 104: Safety System

    ELECTRICAL SYSTEM Safety System The rider is equipped with a safety system that prevents starting or driving under the following conditions. The engine should only be possible to start when the cutting unit is in its raised position and the parking brake is applied.
  • Page 105 ELECTRICAL SYSTEM Microswitch: Mowing Deck See ”Adjusting the Lever Housing” on page 69 for adjustment instructions. Microswitch: Mowing Deck Microswitch: Seat The microswitch is located on the underside of the seat and can be replaced together with the holder without adjustment. The switch inside the holder cannot be replaced alone as it is glued into place.
  • Page 106 ELECTRICAL SYSTEM English-...

  • Page 107: Hydraulic System

    HYDRAULIC SYSTEM Hydraulic System Hydraulic Hygiene Keep the hydraulic system clean. Remember to: • Dirt particles that enter the system include: • Thoroughly clean before the top-up cap is - Contaminants entering when topping up opened or any connector loosened. with oil.

  • Page 108: Keep The Hydraulic Oil Clean

    HYDRAULIC SYSTEM Keep the Hydraulic Oil Clean Working Methods Dirt and contaminants are the greatest enemies of Cleanliness also applies to components that have a hydraulic system. Moreover, long work sessions been removed or are to be installed. Keep in mind at high power are very dependent on whether the that a replaced component should probably be hydraulic oil has been able to retain its condition.
  • Page 109 HYDRAULIC SYSTEM Pressure to the hydraulic system is provided by the The hose’s nipple for the cylinder’s piston side is drive system's pump. A pressure limiting valve limits equipped with a throttle. Between the slider and the the maximum system pressure to about 45 bar/ throttle, there is a mechanically controlled return 630 PSI.

  • Page 110: Component Locations Pr 17 Awd

    HYDRAULIC SYSTEM Component Locations PR 17 AWD Pressure to the hydraulic system is provided by the The hose’s nipple for the cylinder’s piston side is drive system's pump. A pressure limiting valve limits equipped with a throttle. Between the slider and the the maximum system pressure to about 45 bar/ throttle, there is a mechanically controlled return 630 PSI.

  • Page 111: Component Locations Pf 21 Awd

    HYDRAULIC SYSTEM Component Locations PF 21 AWD Pressure to the hydraulic system is provided by the The hose’s nipple for the cylinder’s piston side is drive system's pump. A pressure limiting valve limits equipped with a throttle. Between the slider and the the maximum system pressure to about 45 bar/ throttle, there is a mechanically controlled return 630 PSI.

  • Page 112: Bleeding The Hydraulic System

    HYDRAULIC SYSTEM Bleeding the Hydraulic System See ”Bleeding the Hydrostatic and Hydraulic Systems PR 17 AWD, PF 21 AWD” on page 66. Power Steering See ”Removing/Fitting the Power Steering” on page 43. Replacing the Lift Cylinder Lower the cutting unit to the ground. Stop the engine.

  • Page 113: Valve Assembly

    HYDRAULIC SYSTEM Valve Assembly Removing and Refitting Lower the cutting unit to the ground. Stop the engine. Remove the plastic cover from the hydraulic valve block. Clean in accordance with ”Working Methods” on page 106. Hold the valve block nipples in place and loosen the hydraulic connectors from the valve block.
  • Page 114 HYDRAULIC SYSTEM Hydraulic oil filter, change Remove the oil filter. If necessary, use a filter remover. Wipe new, clean engine oil onto the seal for the new filter. Fill the filter with new, clean oil. Mount the filter by hand with + 3/4 turn. Remove the transmission cover and fill the transmission oil tank.
  • Page 115 HYDRAULIC SYSTEM Remove the Allen screws and spacing tubes and remove the control valve from the valve block. Keep track of the two o- rings that are between the control valve and the valve block. When replacing the control valve, move the nipple, including the rubber/steel washer for the forward hose, to the new valve.
  • Page 116 HYDRAULIC SYSTEM Control Valve, Dismantling/Assembly Remove the control valve, see above. Clean in accordance with ”Working Methods” on page 106. Place the valve in the vice. Tighten down on the lower part (under the slider hole). Remove the check valve. Set the tool to the wide wrench setting, 15 mm.
  • Page 117 HYDRAULIC SYSTEM Pull out the slider. Normally, the spring does not need to be removed, but if it does, only the hole in the slider may be used to hold it in place. Slider with spring Remove the steel ring and o-ring from the rear section.

  • Page 118: Hose Bundle

    HYDRAULIC SYSTEM 17. Risk of incorrect assembly: Twist the slider so that the lever ball enters the front section of the slider hole and attach the lever housing and lever. Tightening torque, max. 8.5 Nm. 18. Risk of damaging the seals. Lubricate them before fitting.
  • Page 119 HYDRAULIC SYSTEM The yellow, blue, green and red hoses should be positioned in two layers. The bottom layer should be made up of the green (left) and yellow (right) hoses. The top layer of the red (left) and blue (right). The black hose is routed to the left between the layers when half of the hose protection has been wound Tightening torque couplings 45 Nm...

  • Page 120: Changing The Hydraulic Oil Cooler, Pf 21 Awd

    HYDRAULIC SYSTEM Changing the hydraulic oil cooler, PF 21 AWD Clean according to work methods. Loosen the hydraulic hoses. Oil from the cooler may flow out. Detach the cables to the cooling fan. Remove the cooling unit by loosening 4 bolts.

  • Page 121: Replacing The Cooling Fan

    HYDRAULIC SYSTEM Replacing the cooling fan Loosen the cables to the cooling fan. Unscrew the fan. Fit a new fan. Connect the cables. English-...
  • Page 122 HYDRAULIC SYSTEM English-...
  • Page 123 The engine will not start.
  • Page 124 Engine starts but does not run satisfactorily...
  • Page 125 The motor runs normally, low /no power...
  • Page 126 Low power, abnormal noise...
  • Page 127 Transmission: Overheating, other indications...
  • Page 128 Uneven mowing result, vibrations...
  • Page 130 115 11 85-26 2016W15...

This manual is also suitable for:

Pf 21Pf 21 awdPr 17 awdR 418ts

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