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Record the frame number, engine number (Primary ID), and key number in the spaces provided for assistance when ordering spare parts from a Yamaha dealer. 1 The frame number is the seventeen-digit number stamped on the frame of the snowmobile. (See fig.
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Should major repairs ever be required, you are advised to ask a Yamaha dealer to inspect and repair the snow- mobile whenever it is necessary; they have the tech- niques, tools, and parts to ensure your satisfaction. We...
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PLEASE READ AND UNDERSTAND THIS MANUAL COMPLETELY BEFORE OPERATING THE SNOWMO- BILE. NOTE: Yamaha continually seeks advancements in product design and quality. Therefore, while this manual con- tains the most current product information available at the time of printing, there may be minor discrepan- cies between your snowmobile and this manual.
ESU00007 L OCATION OF THE IMPORTANT LABELS Please read the following labels carefully before operat- ing this snowmobile. NOTE: Maintain or replace safety and instruction labels, as nec- essary. 1 SXV70 1 SXV70ER WARNING WARNING DO NOT OPERATE ENGINE WITHOUT This unit contains high pressure nitrogen gas.
1. Read the Owner’s Manual and all labels before oper- ating this snowmobile. Become familiar with all of the operating controls and their function. Consult a Yamaha dealer about any control or function you do not understand. 2. This snowmobile was not manufactured for use on public streets, roads, or highways.
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7. Do not allow anyone to stand behind the snowmobile when starting, inspecting, or adjusting the snowmo- bile. A broken track, track fittings, or debris thrown by the track could be dangerous to the operator or bystanders. 8. Handle fuel with care; it is HIGHLY FLAMMABLE. Never add fuel when the engine is running or hot.
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Fuel may leak out from the fuel breather hose. 2. Modifications made to the snowmobile not approved by Yamaha, or the removal of original equipment may render your snowmobile unsafe for use that may cause severe personal injury. Modifications may also make the snowmobile illegal to use.
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0 Storage compartment A Tail/brake light B Snow flap C Brake lever D Parking brake lever E Headlight beam switch F Engine stop switch G Throttle lever H Drive select lever (SXV70ER) I Starter handle J Shroud latch K Main switch L Starter lever M Thumb warmer control knob N Grip warmer control knob...
ESU00013 C ONTROL FUNCTIONS ESU00256 Main switch The main switch controls the following items. 1 “OFF” The ignition circuit is switched off. The key can be removed only in this position. 2 “ON” The ignition circuit is switched on. The engine can be started. NOTE: The headlight, meter lights, and taillight will come on after the engine starts.
ESU00020 Starter lever (choke) Use the starter lever (choke) when starting and warming up a cold engine. 1 Starter lever (choke) 2 When starting a cold engine. 3 Warming up 4 When the engine is warm. NOTE: Refer the “Starting the engine” section for proper opera- tion.
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WARNING If the T.O.R.S. is activated, make sure that the cause of the malfunction has been corrected and that the engine can be operated without a prob- lem before restarting the engine. Be sure to use the specified spark plug and spark plug cap.
ESU00291 Speedometer unit The speedometer unit is equipped with the following: a digital speedometer (which shows riding speed) an odometer (which shows the total distance trav- eled) two tripmeters (which show the distance traveled since they were last set to zero) warning indicators (which show self-diagnosis, cool- ant temperature, oil level, and fuel level warnings) fuel meter (which shows the fuel remaining in the fuel...
(See the table below for warning indicator, warning light and fuel meter segment flash pattern.) When this occurs, have a Yamaha dealer inspect the snowmobile as soon as possible. CA-08E Warning indicator, warning light, and fuel meter segments of the fuel meter flash pattern ·...
(See the table below for warning indicator and warning light flash pattern.) When this occurs, have a Yamaha dealer inspect the snowmobile as soon as possible. CA-09E Warning indicator and warning light flash pattern ·...
The self-diagnosis warning indicator 1 and warning light 2 warn the rider of the above problems by flashing con- tinuously. If necessary, ask a Yamaha dealer for further details. (See page 5-8 for warning indicator and warning light flash patterns.)
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CA-10E Self-diagnosis warning indicator and warning light flash patterns Warning indicator and warning · · · light flash continuously in this 0.75 s pattern. 0.25 s Warning indicator and warning · · · light flash continuously in this 0.25 s pattern.
ESU00031 Engine stop switch The engine stop switch 1 is used to stop the engine in an emergency. Simply push 2 the stop switch to stop the engine. To start the engine, pull 3 the stop switch and proceed with starting the engine. (See page 7-1 for more details.) During the first few rides, practice using the stop switch so that you can react quickly in an emergency.
ESU00035 Parking brake lever When parking the snowmobile or starting the engine, apply the parking brake by moving the brake lever 1 to the left. To release the parking brake, move the parking brake lever 1 to the right. È To apply the parking brake É...
ESU00039 Headlight beam switch Push the headlight beam switch to change the headlight beam to high or low. 1 Headlight beam switch 2 Push 3 High beam 4 Low beam ESU00279 Grip warmer control knob The grip warmer control knob controls the electrically heated handlebar grips.
ESU00048 Shroud latches To open the shroud, unhook the shroud latches, and then slowly raise the shroud forward until it stops. When clos- ing the shroud, slowly lower it to its home position, and then hook the shroud latches. 1 Shroud latch 2 Shroud CAUTION : Make sure that all cables and wires are in place when...
ESU00053 V-belt holders Keep a spare V-belt for emergency use by placing it into the V-belt holders provided. CAUTION : Make sure that the V-belt is installed securely in the holders. ESU00056 Spark plug holders Keep spare spark plugs for emergency use by placing them into the spark plug holders provided.
ESU00072 P RE-OPERATION CHECKS NOTE: Pre-operation checks should be made each time the snowmobile is used. WARNING The engine and muffler will be very hot after the engine has been run. Avoid touching the engine and muffler while they are still hot with any part of your body or clothing during inspection or repair.
Consult a Yamaha dealer. Gasohol contain- ing methanol is not recommended. Make sure that snow or ice does not enter the fuel tank when refueling. Do not use alcohol deicers or water absorbing additives with oxygenated fuel. The fuel tank should be filled with straight gaso- line as specified.
The T.O.R.S. will operate and the engine should run between 2,800 and 3,000 r/min. WARNING If the engine does not run between 2,800 and 3,000 r/min, stop the engine by turning the main switch to the “OFF” position and consult a Yamaha dealer.
Do not operate the snowmobile if you find any problems in the brake system. You could lose braking ability, which could lead to an accident. Ask a Yamaha dealer to inspect and repair the brake system. CAUTION : Make sure that the brake lever end does not project out over the handlebar end.
Apply the brake for a few minutes. Check to see if any brake fluid leaks out from the brake hose joints or the master cylinder. WARNING If brake fluid leakage is found, ask a Yamaha dealer for immediate repairs. CAUTION : Brake fluid may deteriorate painted surfaces or plas- tic parts.
ESU00097 Drive track Check the drive track for deflection, wear, or damage. Adjust or replace if necessary. (See pages 8-24–8-26 for more details.) WARNING Do not operate the snowmobile if you find damage to the drive track, or if it has been maladjusted. Drive track damage or failure could result in loss of brak- ing ability and snowmobile control, which could cause an accident.
Check the handlebar for excessive free play: 1. Push the handlebar up and down and back and forth. 2. Turn the handlebar slightly to the right and left. If excessive free play is noticed, consult a Yamaha dealer. ESU00105 Lights Check the lights.
NOTE: The air filter element can be removed when the ambi- ent temperature is 5 °C (41.5 °F) or higher. Before removing the air filter element, consult a Yamaha dealer.
ESU00110 Fittings and fasteners Check the tightness of the fittings and fasteners. Tighten in proper sequence and torque if necessary. ESU00111 Tool kit and recommended equipment It is good practice to carry the tool kit, spare parts, and other necessary equipment with you while riding the snowmobile so that minor repairs can be done if neces- sary.
ESU00112 O PERATION ESU00281 Starting the engine WARNING Be sure to check the “SAFETY INFORMATION” section carefully before starting the engine. Make sure that the parking brake is applied. NOTE: Make sure that the engine stop switch is in the on posi- tion.
Electric starting model For SXV70ER 2. Turn the main switch to the “START” position. After the engine starts, put the starter lever (choke) in the half-open position. Warm up the engine until it does not run roughly or begin to stall when the starter lever is returned to the closed position.
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3. Mesh the rope stopper with the edge of the primary sheave assembly. 1 Rope stopper 2 Primary sheave assembly edge 4. Wind the rope counterclockwise three turns on the primary sheave assembly. 5. Grasp the screwdriver handle and pull briskly. WARNING Do not wind the emergency starter rope around your hand.
Also avoid lugging the engine, such as laborious opera- tion in wet snow. If any abnormal condition is noticed, such as excessive vibration or noise, consult a Yamaha dealer. NOTE: To ensure proper engine break-in, use a 50:1 gasoline/oil mixture when filling the fuel tank of a new snowmobile for the first time.
ESU00127 Riding your snowmobile Getting to know your snowmobile A snowmobile is a rider active vehicle, and your riding position and your balance are the two basic factors of maneuvering your snowmobile. Riding your snowmobile requires skills acquired through practice over a period of time. Take the time to learn the basic techniques well before attempting more difficult maneuvers.
To start out and accelerate 1. With the engine idling, release the parking brake. 2. Apply the throttle slowly and smoothly. The V-belt clutch will engage and you will start to accelerate. WARNING The operator should always keep both hands on the handlebar.
Remember: Avoid higher speeds until you are thoroughly familiar with the operation of your snowmobile. Riding uphill You should practice first on gentle slopes. Try more diffi- cult climbs only after you have developed your skill. As you approach a hill, accelerate before you start the climb, and then reduce the throttle opening to prevent track slip- page.
Traversing a slope WARNING Traversing slopes is not recommended for a novice snowmobiler. Traversing a slope requires you to properly position your weight to maintain proper balance. As you travel across the slope, lean your body to position your weight towards the uphill side.
Operation on surfaces other than snow or ice Operation of your snowmobile on surfaces other than snow or ice should be avoided. Operation under such conditions will damage or result in rapid wear of the ski runners, drive track, slide runners, and drive sprockets. Operation of the snowmobile under the following condi- tions should be avoided at all costs: 1.
Studs may catch on an object and pull out of the track, leaving tears and damage around the already weakened area. To minimize possible dam- age, consult your stud manufacturer for installation and stud pattern recommendations. Yamaha does not recommend track studding. 7-10...
ESU00135 Driving WARNING Be sure to read the “SAFETY INFORMATION” and “Riding your snowmobile” sections carefully before operating the snowmobile. NOTE: Make sure that the engine is warmed up enough before riding. For SXV70 1. Release the parking brake by moving the parking brake lever to the right.
2. Release the parking brake by moving the parking brake lever to the right. 3. Press the throttle lever slowly to move the snowmo- bile. 4. Turn the handlebar in the desired direction. 5. Squeeze the brake lever to stop the snowmobile. 6.
ESU00138 Transporting When transporting your snowmobile on a trailer or in a truck, observe the following recommendations to help protect it from damage: Make sure that the fuel level in the fuel tank is lower than the bottom of the carburetors. Otherwise, the vibration and bumps from the road surface could make it possible for fuel to flow through the carbure- tors into the crankcase.
Engine stop switch ∗ Repair if necessary. Throttle override Check operation. 5-2–5-3, ∗ Repair if necessary. system (T.O.R.S.) Check operation. Throttle lever 5-2, 6-3 ∗ Repair if necessary. ∗ It is recommended that these items be serviced by a Yamaha dealer.
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Replace bulbs if necessary. Check fluid level. Add only distilled water if nec- 6-8, 8-29 essary. Battery ∗ Check specific gravity and (SXV70ER) breather hose operation. Charge/correct if necessary. ∗ It is recommended that these items be serviced by a Yamaha dealer.
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Tool kit and recom- Check for proper placement. mended equipment ∗ It is recommended that these items be serviced by a Yamaha dealer. NOTE: Brake fluid replacement: 1. When disassembling the master cylinder or caliper cylinder, replace the brake fluid.
NOTE: If you do not have a torque wrench available during a service operation requiring one, take your snowmobile to a Yamaha dealer to check the torque settings and adjust them if necessary. ESU00144 Spark plug inspection The spark plug is an important engine component and is easy to inspect.
Spark plug tightening torque: 20 Nm (2.0 m·kgf, 14 ft·lb) ESU00145 Engine idle speed adjustment CAUTION : Be sure to have a Yamaha dealer make this adjustment. Make sure that the throttle lever moves smoothly. Make sure that the carburetor is synchronized first.
ESU00147 Throttle cable adjustment CAUTION : Be sure to adjust the engine idle speed first. 1. Loosen the locknut. 2. Turn the adjuster in or out until the proper throttle lever free play is achieved. Throttle lever free play a: 1.0–2.0 mm (0.04–0.08 in) 1 Locknut 2 Adjuster...
ESU00150 Carburetor adjustment CAUTION : Be sure to have a Yamaha dealer make this adjustment. Make sure that the carburetor silencer is installed during running to prevent engine damage. Under some operating conditions the carburetor setting may have to be changed due to air temperature changes, elevation changes, use of alcohol oxygenated fuels, etc.,...
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Jet needle adjustment Adjust the jet needle by changing its clip position accord- ing to the setting chart which is available at a Yamaha dealer. Standard jet needle clip 1 position: 3rd groove from upper end CD-03E Clip position Mixture...
Yamaha Power Valve System (Y.P.V.S.) The Y.P .V.S. is a vital part of the engine and requires very sophisticated adjustment. Adjustment should be left to a Yamaha dealer who has the professional knowledge, specialized data and equip- ment to do so properly.
If you plan to operate your snowmobile at an altitude different from the area where you bought it, be sure to consult a Yamaha dealer. They can tell you if there are any changes necessary for the altitude where you plan to ride.
The cooling system must be bled of air if the coolant reservoir becomes empty, if air can be seen in the cooling system, or if there is a cooling system leak. Consult a Yamaha dealer. CAUTION : Operating the engine with an improperly bled cool- ing system can cause overheating and severe engine damage.
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3. Fill the coolant reservoir with coolant to the “COLD LEVEL” mark. 4. Install the coolant reservoir cap. Check for any cool- ant leakage. NOTE: If you find any leaks, consult a Yamaha dealer. 8-12...
Adjust the V-belt position by removing or adding a spacer 1 on each adjusting bolt. Have a Yamaha dealer make this adjustment. CAUTION : As the V-belt wears, adjustment may be necessary. To ensure proper clutch performance, the V-belt...
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3. Pull 3 the V-belt up over the secondary fixed sheave. 4. Remove the V-belt from the secondary sheave assembly and primary sheave assembly. 5. Put the new V-belt back on the secondary sheave assembly only. Do not force the V-belt between the sheaves;...
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8. Install the V-belt over the primary sheave assembly. 9. Rotate the secondary sliding sheave clockwise 6 and push 7 it so that it separates from the secondary fixed sheave. 10. Install the V-belt 8 between the secondary sliding and secondary fixed sheaves. 11.
ESU00171 Checking the oil level of the drive chain housing WARNING The engine and muffler will be very hot after the engine has been run. Avoid touching the engine and muffler while they are still hot with any part of your body or clothing during inspection or repair.
2 Adjuster bolt ESU00174 Checking the brake pads Check the brake pads for wear. If the brake pads reach the wear limit, ask a Yamaha dealer to replace them. 1 Brake pad wear indicator Wear limit a: 1.5 mm (0.06 in)
As the parking brake pads wear, adjustment may be nec- essary to ensure proper brake performance. WARNING Be sure to have a Yamaha dealer make this adjust- ment. 1. Loosen the locknut 1. 2. Turn the parking brake adjuster 2 in or out to adjust the clearance between the parking brake pad 3 and brake disc 4.
A softer setting, for example, may provide greater rider comfort, while a harder setting may allow more precise handling and control over certain types of terrain or riding conditions. WARNING Be sure to have a Yamaha dealer make this adjust- ment. 8-19...
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Do not deform or damage the shock absorber in any way. Do not dispose of a worn or damaged shock absorber by yourself. Take the unit to a Yamaha dealer. 8-20...
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60.3 mm (3.16 in) (2.77 in) (2.37 in) WARNING Be sure to have a Yamaha dealer make this adjust- ment. This shock absorber contains highly pressurized nitrogen gas. It could explode by improper handling, causing injury, or property damage. Do not tamper with or attempt to open the shock absorber.
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Rear suspension full rate adjustment The total suspension spring rate and damping character- istics can be adjusted by changing the installed position of the shock absorber. WARNING Be sure to have a Yamaha dealer make this adjust- ment. CD-07E Installation position Spring rate and...
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ESU00292 Control rod adjustment The weight transfer can be adjusted by turning the con- trol rod adjusting nut 1. 1. Loosen the locknut 2 while holding the control rod adjusting nut 1. 2. To increase weight transfer, turn the adjusting nut in direction a.
ESU00199 Drive track adjustment WARNING A broken track, track fittings or debris thrown by the drive track could be dangerous to an operator or bystanders. Observe the following precautions: Do not allow anyone to stand behind the snow- mobile when the engine is running. When the rear of the snowmobile is raised to allow the drive track to spin, a suitable stand must be used to support the rear of the snowmo-...
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Drive track adjustment WARNING Be sure to have a Yamaha dealer make this adjustment. Support the snowmobile securely on a suitable stand before working underneath the snowmo- bile. Operate the engine in a well-ventilated area. 1. Lift the rear of the snowmobile onto a suitable stand to raise the drive track off the ground.
2. Check the following for ski alignment: a. Skis are facing forward. b. Ski toe-out (1 – 2) is within specification. Ski toe-out (1 – 2): 0–15 mm (0–0.59 in) 3. If the alignment is not correct, consult a Yamaha dealer. 8-26...
ESU00247 Lubrication Lubricate the following points. Lubricant: Low-temperature grease 1 Throttle cable ends WARNING Apply a dab of grease onto the cable end only. Do not grease the brake or throttle cables themselves because they could become frozen, which could cause loss of control.
ESU00208 Headlight bulb replacement 1. Lift up the shroud. 2. Disconnect the headlight connector. 3. Remove the bulb holder cover. 4. Remove the bulb holder by depressing and turning it counterclockwise. 1 Bulb holder cover 5. Remove the bulb. WARNING Keep flammable products or your hands away from the hot bulb until it cools down.
ESU00213 Battery For SXV70ER Replenishing the battery fluid 1. Check the fluid level. The level should be between the upper and lower level marks. a “UPPER LEVEL” b “LOWER LEVEL” 2. Add only distilled water if necessary. CAUTION : Normal tap water contains minerals which are harm- ful to a battery;...
1. Lift up the shroud. 2. Replace the blown fuse with one of proper amperage. NOTE: If the fuse immediately blows again, ask a Yamaha dealer to inspect the snowmobile. Specified fuses: 1 Main fuse: 30 A 2 “HEAD”...
Spark plugs are dirty with carbon or are wet ... Remove carbon or wipe the spark plugs dry; replace if necessary. Faulty ignition system ... Ask a Yamaha dealer to inspect. T.O.R.S. system malfunction ... Discon- nect the carburetor switch connectors...
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2. Drive track does not move ... Foreign times with the ignition off to expel object is caught in the drive track, or excess fuel. Ask a Yamaha dealer to slide runners have melted to the slide inspect. metal due to lack of lubrication.
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Yamaha dealer to inspect. 3. Worn or damaged V-belt with flat spots ... Replace. 4. Worn or damaged idler wheels or shafts ... Ask a Yamaha dealer to inspect. 5. Worn or damaged drive track ... Ask a Yamaha dealer to inspect.
2. Lubrication 5. Protection Lubricate moving parts, suspension link- Apply a coat of wax, such as Yamaha Sili- age, and pivot points. Use the grease or cone Wax, to painted surfaces. Spray lubricant specified in the MAINTENANCE Yamaha Silicone Spray, or an equivalent...
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For peak performance, it is recommended securely attached to the battery. that you have your snowmobile checked and tuned by a Yamaha dealer. They have CAUTION : the experience and training to help you get the maximum performance and use of your Do not charge the battery quickly.