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INTRODUCTION EAU10090 Congratulations on your purchase of the Yamaha YP400V. This model is the result of Yamaha’s vast experience in the pro- duction of fine sporting, touring, and pacesetting racing machines. It represents the high degree of craftsmanship and reli- ability that have made Yamaha a leader in these fields.
This manual should be considered a permanent part of this scooter and should remain with it even if the scooter is sub- sequently sold. Yamaha continually seeks advancements in product design and quality. Therefore, while this manual contains the most current product information available at the time of printing, there may be minor discrepancies between your scooter and this manual.
TABLE OF CONTENTS SAFETY INFORMATION ....1-1 OPERATION AND IMPORTANT Cast wheels ........6-25 Further safe-riding points ....1-4 RIDING POINTS........5-1 Accessories and replacement Location of important labels .....1-6 Starting the engine ......5-1 parts ........... 6-26 Starting off ........5-2 Front and rear brake lever free DESCRIPTION ........2-1 Acceleration and deceleration ..
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STORAGE ...........7-1 Care ..........7-1 Storage ..........7-3 SPECIFICATIONS ......8-1 CONSUMER INFORMATION....9-1 Identification numbers .....9-1 Reporting safety defects ....9-3 Scooter noise regulation ....9-4 Maintenance record ......9-5 YAMAHA MOTOR CORPORATION, U.S.A. STREET AND ENDURO MOTORCYCLE LIMITED WARRANTY .........9-7 YAMAHA EXTENDED SERVICE (Y.E.S.) ........9-9...
SAFETY INFORMATION TIONS. Many accidents involve inexperi- EAU10261 enced operators. In fact, many op- SCOOTERS ARE SINGLE TRACK Safe riding erators who have been involved in VEHICLES. THEIR SAFE USE AND Always make pre-operation accidents do not even have a cur- OPERATION DEPENDENT checks.
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SAFETY INFORMATION Always signal before turning or ries. The use of a safety helmet is the approved by Yamaha, or the removal of changing lanes. Make sure that single most critical factor in the preven- original equipment, may render the other motorists can see you.
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Gasoline and exhaust gas this scooter. Since Yamaha cannot test should be kept to a minimum. GASOLINE IS HIGHLY FLAMMA- all other accessories that may be avail-...
SAFETY INFORMATION Take care not to spill any gaso- sene heater, or near an open EAU10371 Further safe-riding points line on the engine or exhaust flame), otherwise it could catch Be sure to signal clearly when system when refueling. fire. making turns.
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SAFETY INFORMATION and ankle so they do not flap), and a bright colored jacket. Do not carry too much luggage on the scooter. An overloaded scoot- er is unstable.
SAFETY INFORMATION EAU10381 Location of important labels Please read the following important labels carefully before operating this vehicle.
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SAFETY INFORMATION CAUTION Cleaning with alkaline or acid cleaner, gasoline or solvent will damage windshield. Use neutral detergent. 3JJ — 2835Y — A0 WARNING BEFORE YOU OPERATE THIS VEHICLE, READ 5RU-21668-00 THE OWNER’S MANUAL AND ALL LABELS. ALWAYS WEAR AN APPROVED MOTORCYCLE HELMET, eye protection, and protective clothing.
INSTRUMENT AND CONTROL FUNCTIONS sidestand is moved down. loss of control or an accident. Make EAU10460 Main switch/steering lock sure that the vehicle is stopped be- fore turning the key to “OFF” or EAU10660 “LOCK”. All electrical systems are off. The key can be removed.
“ON”. If the warning light does not come on for a few seconds, then go off, have a Yamaha dealer check the electrical circuit. 1. Speedometer 1. Turn signal indicator lights “...
INSTRUMENT AND CONTROL FUNCTIONS EAU11872 EAU36104 Tachometer Multi-function display EWA12311 WARNING Be sure to stop the vehicle before making any setting changes to the multi-function display. 1. V-belt replacement indicator “V-BELT” 2. Fuel level warning indicator “ ” 1. Tachometer 3.
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INSTRUMENT AND CONTROL FUNCTIONS cator started flashing) tor will start flashing, and the display will the fuel reserve tripmeter manually, it a self-diagnosis device automatically change to the fuel re- will reset itself automatically and the a clock serve tripmeter mode “TRIP F” and display will return to the prior mode af- an ambient temperature display start counting the distance traveled...
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If the multi-function display indicates NOTE: such an error code, note the code num- The oil change indicator may flash ber, and then have a Yamaha dealer Oil change indicator “OIL” when the engine is revved with the check the vehicle.
INSTRUMENT AND CONTROL FUNCTIONS Clock mode EAU12343 NOTE: Handlebar switches To set the clock: If the ambient temperature falls be- 1. Push the “SELECT” button and low –10 °C (14 °F), a lower tem- Left “RESET” button together for at perature than –10 °C (14 °F) will least two seconds.
INSTRUMENT AND CONTROL FUNCTIONS Right EAU12500 EAU12900 Horn switch “ ” Front brake lever Press this switch to sound the horn. EAU12660 Engine stop switch “ ” Set this switch to “ ” before starting the engine. Set this switch to “ ”...
INSTRUMENT AND CONTROL FUNCTIONS rear brake lock lever is applied. EAU12950 EAU12962 Rear brake lever Rear brake lock lever To provide secure locking of the rear wheel, apply the rear brake le- ver first before moving the rear brake lock lever to the left. EWA12361 WARNING Never move the rear brake lock lever...
INSTRUMENT AND CONTROL FUNCTIONS move it. EAU13161 Fuel tank cap 3. Close the lid. EWA11120 WARNING To open the fuel tank cap 1. Open the lid by sliding the lever Be sure that the fuel tank cap is forward, and then pull the lever up. properly installed and locked before riding the scooter.
10%. Gasohol Recommended fuel containing methanol is not recom- UNLEADED GASOLINE ONLY mended by Yamaha because it can Fuel tank capacity: cause damage to the fuel system or ve- 14.0 L (3.70 US gal) (3.08 Imp.gal) hicle performance problems.
INSTRUMENT AND CONTROL FUNCTIONS EAU13431 EAU34140 Catalytic converter Seats This model is equipped with a catalytic converter in the exhaust system. EWA10860 WARNING The exhaust system is hot after op- eration. Make sure that the exhaust system has cooled down before do- ing any maintenance work.
INSTRUMENT AND CONTROL FUNCTIONS To close the rider seat To install the passenger seat EAU34150 Adjusting the rider seat 1. Fold the rider seat down, and then Insert the projections on the passenger push it down to lock it in place. seat into the holders as shown, place 2.
INSTRUMENT AND CONTROL FUNCTIONS and then remove it. EAU14492 Storage compartments Front storage compartment A To open the storage compartment when it is locked, insert the key in the lock, turn it counterclockwise, and then grasp the lock while pushing the button To open the storage compartment when it is unlocked, simply grasp the 1.
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INSTRUMENT AND CONTROL FUNCTIONS being washed, wrap any articles stored in the compartment in a plastic bag. Do not keep anything valuable or breakable in the storage com- partment. ECA11100 CAUTION: Do not leave the rider seat open for an extended period of time, other- 1.
Yamaha’s ignition circuit cut-off system has been designed to assist the operator in fulfilling the respon- sibility of raising the sidestand be- fore starting off. Therefore, check this system regularly as described below and have a Yamaha dealer re- 3-15...
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Does the engine start? The sidestand switch may be defective. The scooter should not be ridden until checked by a Yamaha dealer. With the engine still off: 6. Move the sidestand up. 7. Keep the front or rear brake applied.
PRE-OPERATION CHECKS EAU15591 The condition of a vehicle is the owner’s responsibility. Vital components can start to deteriorate quickly and unexpectedly, even if the vehicle remains unused (for example, as a result of exposure to the elements). Any damage, fluid leakage or loss of tire air pressure could have serious consequences.
If necessary, add recommended brake fluid to specified level. Check hydraulic system for leakage. Make sure that operation is smooth. Check cable free play. Throttle grip 6-23, 6-30 If necessary, have Yamaha dealer adjust cable free play and lubricate cable and grip housing.
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Make sure that all nuts, bolts and screws are properly tightened. Chassis fasteners — Tighten if necessary. Instruments, lights, signals Check operation. — and switches Correct if necessary. Check operation of ignition circuit cut-off system. Sidestand switch 3-15 If system is defective, have Yamaha dealer check vehicle.
ECA11040 Consult a Yamaha dealer re- In order for the ignition circuit cut-off CAUTION: garding any control or function system to enable starting, the side-...
OPERATION AND IMPORTANT RIDING POINTS EAU16760 EAU16780 EAU16791 Starting off Acceleration and deceleration Braking 1. Close the throttle completely. NOTE: 2. Apply both front and rear brakes Before starting off, allow the engine to simultaneously while gradually in- warm up. creasing the pressure.
OPERATION AND IMPORTANT RIDING POINTS Rear cult. EAU16841 Engine break-in There is never a more important period in the life of your engine than the period between 0 and 1600 km (1000 mi). For this reason, you should read the follow- ing material carefully.
PERIODIC MAINTENANCE AND MINOR REPAIR rapid engine wear may result. Con- EAU17271 EAU17301 PERIODIC MAINTENANCE sult a Yamaha dealer for proper Safety is an obligation of the owner. Pe- PROPER PERIODIC MAINTENANCE maintenance intervals. riodic inspection, adjustment and lubri- OF YOUR VEHICLE IS IMPORTANT...
PERIODIC MAINTENANCE AND MINOR REPAIR EAU17501 NOTE: Owner’s tool kit If you do not have the tools or experi- ence required for a particular job, have a Yamaha dealer perform it for you. EWA10350 WARNING Modifications approved Yamaha may cause loss of perfor- mance and render the vehicle un- safe for use.
Replace if necessary. Check the air cut-off valve, reed √ 7 * Air induction system valve, and hose for damage. Replace any damaged parts. * Since these items require special tools, data and technical skills, have a Yamaha dealer perform the service.
PERIODIC MAINTENANCE AND MINOR REPAIR EAU32183 General maintenance and lubrication chart INITIAL ODOMETER READINGS 600 mi 4000 mi 8000 mi 12000 mi 16000 mi 20000 mi ITEM ROUTINE (1000 km) (7000 km) (13000 km) (19000 km) (25000 km) (31000 km) 1 month 6 months 12 months...
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PERIODIC MAINTENANCE AND MINOR REPAIR INITIAL ODOMETER READINGS 600 mi 4000 mi 8000 mi 12000 mi 16000 mi 20000 mi ITEM ROUTINE (1000 km) (7000 km) (13000 km) (19000 km) (25000 km) (31000 km) 1 month 6 months 12 months 18 months 24 months 30 months...
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Adjust headlight beam. * Since these items require special tools, data and technical skills, have a Yamaha dealer perform the service. NOTE: From 24000 mi (37000 km) or 36 months, repeat the maintenance intervals starting from 8000 mi (13000 km) or 12 months.
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PERIODIC MAINTENANCE AND MINOR REPAIR EAU36370 NOTE: The air filters and V-belt filter need more frequent service if you are riding in unusually wet or dusty areas. Hydraulic brake service After disassembling the brake master cylinders and calipers, always change the fluid. Regularly check the brake fluid levels and fill the reservoirs as required.
PERIODIC MAINTENANCE AND MINOR REPAIR EAU18712 Removing and installing cowlings and panels The cowlings and panels shown need to be removed to perform some of the maintenance jobs described in this chapter. Refer to this section each time a cowling or panel needs to be re- moved and installed.
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PERIODIC MAINTENANCE AND MINOR REPAIR Cowling B To install the cowling Place the cowling in the original posi- To remove the cowling tion, and then install the screws. 1. Remove the screws. Cowlings C and D To remove one of the cowlings 1.
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PERIODIC MAINTENANCE AND MINOR REPAIR 2. Install the screw access cover by 1. Left floorboard mat 1. Cowling E placing it in its original position. 2. Remove the cowling screws. To install the cowling 3. Install the grab bar by installing the 1.
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PERIODIC MAINTENANCE AND MINOR REPAIR To install the panel EAU34290 Place the panel in the original position, Panel A and then install the bolts. To remove the panel 1. Remove the bolts. 1. Panel B 2. Screw To install the panel Panel B Place the panel in the original position, and then install the screws.
Do not attempt to diagnose such problems yourself. Instead, have a Yamaha dealer check the vehicle. 1. Spark plug cap 2. Check the spark plug for electrode erosion and excessive carbon or 4.
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PERIODIC MAINTENANCE AND MINOR REPAIR spark plug wrench, and then tight- Specified spark plug: en it to the specified torque. NGK/CR7E Tightening torque: Spark plug: To install the spark plug 12.5 Nm (1.25 m·kgf, 9 ft·lbf) 1. Measure the spark plug gap with a wire thickness gauge and, if nec- NOTE: essary, adjust the gap to specifica-...
PERIODIC MAINTENANCE AND MINOR REPAIR EAU36110 EAU34181 NOTE: Canister Engine oil and oil filter The engine oil should be between the element minimum and maximum level marks. The engine oil level should be checked before each ride. In addition, the oil must be changed and the oil filter ele- ment replaced at the intervals specified in the periodic maintenance and lubri-...
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PERIODIC MAINTENANCE AND MINOR REPAIR To change the engine oil (with or without oil filter element replace- (×3) ment) 1. Start the engine, warm it up for several minutes, and then turn it off. 2. Place an oil pan under the engine to collect the used oil.
PERIODIC MAINTENANCE AND MINOR REPAIR Tightening torque: Recommended engine oil: Oil filter element cover bolt: See page 8-1. 10 Nm (1.0 m·kgf, 7.2 ft·lbf) Oil quantity: Without oil filter element replace- ment: NOTE: 1.50 L (1.59 US qt) (1.32 Imp.qt) Make sure that the O-rings are properly With oil filter element replacement: seated.
The final transmission case must be checked for oil leakage before each ride. If any leakage is found, have a Yamaha dealer check and repair the scooter. In addition, the final transmis- sion oil must be changed as follows at the intervals specified in the periodic maintenance and lubrication chart.
PERIODIC MAINTENANCE AND MINOR REPAIR EAU20070 EWA11310 Coolant WARNING The coolant level should be checked Make sure that no foreign mate- before each ride. In addition, the cool- rial enters the final transmission ant must be changed at the intervals case.
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If water has been added to the coolant, have a Yamaha dealer check the antifreeze content of the coolant as soon as possible, otherwise the effectiveness of the coolant will be reduced.
PERIODIC MAINTENANCE AND MINOR REPAIR the original position. Left EAU34203 Air filter elements and check (×6) NOTE: hoses and V-belt case air filter The radiator fan is automatically element switched on or off according to the The air filter elements and the V-belt coolant temperature in the radia- case air filter element should be ser- tor.
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PERIODIC MAINTENANCE AND MINOR REPAIR Left 6. Install the rubber cap. Left ECA12922 CAUTION: Make sure that each filter ele- ment is properly seated in its case. Always replace both air filter el- ements at the same time, other- wise poor engine performance or damage to the engine may re- sult.
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PERIODIC MAINTENANCE AND MINOR REPAIR Cleaning the V-belt case air filter el- necessary. ement 7. Install the V-belt case air filter ele- (×4) 1. Remove cowling (See ment by installing the screws. page 6-8.) 8. Install the V-belt air filter case cov- 2.
To prevent this note the following points regarding the from occurring, the valve clearance specified tires. must be adjusted by a Yamaha dealer at the intervals specified in the periodic Tire air pressure maintenance and lubrication chart.
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Securely pack your heavi- ed wheel parts replacement should 3. Tire wear indicator est items close to the center of the be left to a Yamaha Service Techni- The tires must be checked before each vehicle, and distribute the weight cian.
The wheel rims should be checked Size: for cracks, bends, warpage or 150/70-13M/C 64S damage before each ride. If any Manufacturer/model: damage is found, have a Yamaha IRC/MB67 dealer replace the wheel. Do not DUNLOP/D305L 1. Valve stem nut attempt even the smallest repair to 2.
Since Yamaha cannot con- trol the quality of accessories or parts manufactured by other compa- nies, Yamaha cannot be held liable There should be no free play at the for any consequences caused by brake lever ends. If there is free play,...
If there is air If proper adjustment cannot be ob- in the hydraulic system, have a tained as described, have a Yamaha Yamaha dealer bleed the system be- dealer make this adjustment. fore operating the vehicle. Air in the...
EAU22390 EAU22580 Checking the front and rear Checking the brake fluid level peared, have a Yamaha dealer replace brake pads the brake pads as a set. Front brake The front and rear brake pads must be...
Changing the brake fluid ing it to become ineffective. lower the boiling point of the fluid Have a Yamaha dealer change the Before riding, check that the brake fluid and may result in vapor lock. brake fluid at the intervals specified in...
If a cable is damaged maintenance chart. or does not move smoothly, have a Yamaha dealer check or replace it. Recommended lubricant: Yamaha Chain and Cable Lube or engine oil SAE 10W-30 (API SE)
If the centerstand or sidestand does fork must be checked as follows at the not move up and down smoothly, intervals specified in the periodic main- have a Yamaha dealer check or re- tenance and lubrication chart. pair it. To check the condition...
If any damage is found or the front fork does not operate smoothly, Securely support the vehicle so that have a Yamaha dealer check or re- there is no danger of it falling over. pair it. 2. Hold the lower ends of the front fork legs and try to move them for- ward and backward.
WARNING Electrolyte is poisonous and To charge the battery dangerous since it contains sul- Have a Yamaha dealer charge the bat- furic acid, which causes severe tery as soon as possible if it seems to burns. Avoid any contact with have discharged.
PERIODIC MAINTENANCE AND MINOR REPAIR electrical accessories. er, have a Yamaha dealer EAU34232 Replacing the fuses charge your battery. The main fuse and the fuse box, which To store the battery contains the fuses for the individual cir- 1. If the vehicle will not be used for cuits, are located behind cowling A.
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1. Fuse box 3. Turn the key to “ON” and turn on 2. Taillight fuse the electrical circuit in question to check if the device operates. 4. If the fuse immediately blows again, have a Yamaha dealer check the electrical system. 6-35...
This model is equipped with an LED headlights. If a headlight bulb burns type of tail/brake light. 1. Place the scooter on the center- out, have a Yamaha dealer replace it If the tail/brake light does not come on, stand. and, if necessary, adjust the headlight have a Yamaha dealer check it.
PERIODIC MAINTENANCE AND MINOR REPAIR counterclockwise. EAU34260 Replacing a rear turn signal 7. To insert a new turn signal light light bulb bulb into the socket, push it in, and then turn it clockwise until it stops. 1. Place the scooter on the center- 8.
PERIODIC MAINTENANCE AND MINOR REPAIR push it in, and then turn it clock- EAU34270 Replacing the license plate wise until it stops. light bulb 6. Install the socket (together with the bulb) by turning it clockwise. 1. Remove cowling (See 7.
However, should your scooter re- quire any repair, take it to a Yamaha dealer, whose skilled technicians have the necessary tools, experience, and know-how to service the scooter prop- erly.
Remove the spark plug and check the electrodes. The engine does not start. Have a Yamaha dealer check the vehicle. Check the battery. 4. Battery The engine turns over The battery is good.
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Start the engine. If the engine overheats again, have a The coolant level Yamaha dealer check and repair the cooling system. is OK. NOTE: If coolant is not available, tap water can be temporarily used instead, provided that it is changed to the recommended coolant as soon as possible.
SCOOTER CARE AND STORAGE ucts onto seals, gaskets and wheel thinner, fuel (gasoline), rust re- EAU26090 Care axles. Always rinse the dirt and de- movers or inhibitors, brake flu- While the open design of a scooter re- greaser off with water. id, antifreeze or electrolyte.
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6. Wax all painted surfaces. CAUTION: NOTE: 7. Let the scooter dry completely be- Do not use warm water since it in- Consult a Yamaha dealer for advice on fore storing or covering it. creases the corrosive action of the...
SCOOTER CARE AND STORAGE what products to use. fuel from deteriorating. EAU36560 Storage 3. Perform the following steps to pro- tect the cylinder, piston rings, etc. Short-term from corrosion. Always store your scooter in a cool, dry a. Remove the spark plug cap place and, if necessary, protect it and spark plug.
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SCOOTER CARE AND STORAGE pivoting points of all levers and pedals as well as of the sidestand/ centerstand. 5. Check and, if necessary, correct the tire air pressure, and then lift the scooter so that both of its wheels are off the ground. Alterna- tively, turn the wheels a little every month in order to prevent the tires from becoming degraded in one...
Record the key identification number, vehicle identification number and mod- el label information in the spaces pro- vided below for assistance when ordering spare parts from a Yamaha dealer or for reference in case the vehi- cle is stolen. KEY IDENTIFICATION NUMBER: 1.
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The model label is affixed to the inside of the rear storage compartment. (See page 3-13.) Record the information on this label in the space provided. This in- formation will be needed when ordering spare parts from a Yamaha dealer.
If you believe that your vehicle has a defect which could cause a crash or could cause injury or death, you should immediately inform the National Highway Traffic Safety Administration (NHTSA) in addition to notifying Yamaha Motor Corporation, U.S.A. If NHTSA receives similar complaints, it may open an investigation, and if it finds that a safety defect exists in a group of vehicles, it may order a recall and remedy campaign.
CONSUMER INFORMATION EAU26580 Scooter noise regulation TAMPERING WITH NOISE CONTROL SYSTEM PROHIBITED: Federal law prohibits the following acts or the causing thereof: (1) The removal or rendering inoperative by any person other than for purposes of maintenance, repair, or replacement of any device or element of design incorporated into any new ve- hicle for the purpose of noise control prior to its sale or delivery to the ultimate purchaser or while it is in use or (2) the use of the vehicle after such device or element of design has been removed or rendered inoperative by any person.
CONSUMER INFORMATION EAU26632 Maintenance record Copies of work orders and/or receipts for parts purchased and installed on your vehicle will be required to document that maintenance has been completed in accordance with the emissions warranty. The chart below is printed only as a reminder that maintenance work is required.
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CONSUMER INFORMATION Maintenance Date of Servicing dealer Mileage Remarks interval service name and address 32000 mi (49000 km) or 48 months 36000 mi (55000 km) or 54 months 40000 mi (61000 km) or 60 months...
This excellent Y.E.S. plan coverage is only available to dealer to see how comforting uninterrupted factory- Yamaha owners like you, and only while your Yamaha is still backed protection can be. within the Yamaha Limited Warranty period. So visit your authorized Yamaha dealer to get all the facts.
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Yamaha Limited Warranty expires. A special note: If visiting your dealer isn’t convenient, contact Yamaha with your Primary ID number (your frame number). We’ll be happy to help you get the Y.E.S. coverage you need.
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INDEX Front fork, checking .........6-31 Fuel............3-10 Acceleration and deceleration....5-2 Rear brake lock lever ........ 3-8 Fuel tank cap ..........3-9 Accessories and replacement parts..6-26 Rear brake lock lever cable, adjusting ..6-27 Fuses, replacing ........6-34 Air filter elements and check hoses and Rider seat, adjusting........