2003 YAMAHA YFM350R check engine light

EBU00015
1-CONTENTS
LOCATION OF THE WARNING AND
SPECIFICATION LABELS ....................... 1-1
SAFETY INFORMATION ......................... 2-1
DESCRIPTION AND MACHINE
IDENTIFICATION .................................... 3-1
Identification number records ............... 3-3
Key identification number ..................... 3-5
Vehicle identification number ............... 3-5
Model label ........................................... 3-7
CONTROL FUNCTIONS ......................... 4-1
Main switch........................................... 4-1
Indicator lights ...................................... 4-3
Handlebar switches .............................. 4-5
Throttle lever ........................................ 4-9
Speed limiter ...................................... 4-11
Clutch lever ........................................ 4-13
Brake lever ......................................... 4-13
Brake pedal ........................................ 4-15
Parking brake ..................................... 4-17
Shift pedal .......................................... 4-21
Drive select lever ................................ 4-21
1234
Fuel tank cap ..................................... 4-23
Fuel cock............................................ 4-23
Starter (choke) ................................... 4-25
Seat.................................................... 4-27
Front shock absorber adjustment ...... 4-29
Rear shock absorber adjustment ....... 4-31
PRE-OPERATION CHECKS ................... 5-1
Front and rear brakes .......................... 5-5
Fuel ...................................................... 5-9
Engine oil ........................................... 5-13
Chain.................................................. 5-15
Throttle lever ...................................... 5-17
Fittings and fasteners......................... 5-17
Lights ................................................. 5-17
Switches............................................. 5-17
Battery................................................ 5-19
Tires ................................................... 5-19
How to measure tire pressure ............ 5-23
Tire wear limit..................................... 5-25
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U5NF62.book Page 1 Wednesday, May 8, 2002 1:40 PM

OPERATION ............................................6-1
Starting a cold engine ...........................6-3
Starting a warm engine .........................6-9
Warming up...........................................6-9
Drive select lever operation and
reverse driving ..................................6-11
Shifting ................................................6-15
To start out and accelerate: ................6-17
To decelerate: .....................................6-21
Engine break-in ...................................6-23
Parking ................................................6-27
Parking on a slope ..............................6-29
Accessories and loading .....................6-31
RIDING YOUR ATV..................................7-1
Getting to know your ATV .....................7-3
Ride with care and good
judgement ...........................................7-5
Be careful where you ride ...................7-27
Turning your ATV ................................7-39
Climbing uphill.....................................7-45
Riding downhill ....................................7-55
Crossing a slope .................................7-59
Crossing through shallow water ..........7-63
Riding over rough terrain ....................7-67
Sliding and skidding ............................7-69
What to do if ........................................7-73
67
What to do .......................................... 7-73
PERIODIC MAINTENANCE AND
ADJUSTMENT ......................................... 8-1
Owner’s manual and tool kit ................. 8-3
Periodic maintenance/lubrication.......... 8-7
Engine oil ............................................ 8-15
Spark plug inspection ......................... 8-25
Air filter cleaning ................................. 8-29
Carburetor adjustment ........................ 8-35
Idle speed adjustment ........................ 8-37
Throttle lever adjustment .................... 8-39
Valve clearance adjustment ............... 8-39
Front and rear brake pad
inspection ......................................... 8-41
Brake fluid level check ........................ 8-43
Brake fluid replacement ...................... 8-47
Front brake lever free play.................. 8-49
Brake pedal height adjustment ........... 8-51
Parking brake adjustment ................... 8-53
Adjusting the rear brake light switch ... 8-57
Clutch lever free play adjustment ....... 8-59
Drive chain slack check ...................... 8-61
Drive chain slack adjustment .............. 8-63
Lubricating the drive chain.................. 8-65
Cable inspection and lubrication......... 8-67
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U5NF62.book Page 2 Wednesday, May 8, 2002 1:40 PM

5-1
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PRE-OPERATION CHECKS
Before using this machine, check the following points:
ITEM ROUTINE PAGE
BrakesCheck operation, fluid level and fluid leakage.
Fill with DOT 4 brake fluid if necessary.5-5–5-7,
8-41–8-51
ClutchCheck operation, condition and lever free play. 8-59
Parking brakeCheck operation, condition and cable length. 8-53–8-55
FuelCheck fuel level.
Fill with fuel if necessary.5-9–5-11
Engine oilCheck oil level.
Fill with oil if necessary.5-13–5-15,
8-15–8-23
Drive chainCheck chain slack and condition.
Adjust if necessary.5-15, 8-61–8-65
ThrottleCheck for proper throttle cable operation and free play. 5-17, 8-39
Wheels and tiresCheck tire pressure, wear and damage.5-19–5-25,
8-73–8-75
Fittings and fastenersCheck all fittings and fasteners. 5-17
Lights and switchesCheck for proper operation. 5-17, 8-57, 8-87–8-97
BatteryCheck fluid level.
Fill with distilled water if necessary.5-19, 8-77–8-83
U5NF62.book Page 1 Wednesday, May 8, 2002 1:40 PM

6-9
EBU00180
Starting a warm engine
To start a warm engine, refer to the “Starting a cold
engine” section. The starter (choke) should not be
used. The throttle should be opened slightly.
EBU00538
Warming up
To get maximum engine life, always warm up the
engine before starting off. Never accelerate hard
with a cold engine! To see whether or not the en-
gine is warm, check if it responds to the throttle
normally with the starter (choke) turned off.NOTE:When the parking brake is used, engine speed is
limited to 2,300 r/min. Be sure the parking brake is
released before moving the throttle lever. Other-
wise, the engine will misfire, preventing normal op-
eration.
U5NF62.book Page 9 Wednesday, May 8, 2002 1:40 PM