YAMAHA YFM350R-W 2007 Owner's Guide

4-12
4 ON
With the fuel cock lever in this position, fuel flows
to the carburetor. Turn the fuel cock lever to this
position when starting the engine and riding.RES
This indicates reserve. With the fuel cock lever in
this position, the fuel reserve is made available.
Turn the fuel cock lever to this position if you run
out of fuel while riding. When this occurs, refuel as
soon as possible and be sure to turn the fuel cock
lever back to “ON”!
EBU18850Starter (choke) “” Starting a cold engine requires a richer air-fuel mix-
ture, which is supplied by the starter (choke).
Move the starter (choke) in direction (a) to turn on
the starter (choke).
1. Arrow mark pointing to “ON”
1. Arrow mark pointing to “RES”
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4-13
4Move the starter (choke) in direction (b) to turn off
the starter (choke).
See the “Starting a cold engine” section on page
6-1 for proper operation.
EBU28010Steering lock To lock the steering
1. Turn the handlebar all the way to either side.
2. Open the steering lock cap, and then insert
the steering lock key.
3. Turn the key 1/8 turn counterclockwise, push
it in, and then turn the key 1/8 turn clockwise.
4. Check that the steering is locked, remove the
key, and then close the steering lock cap.
1. Starter (choke) “”
1. Steering lock cap
2. Steering lock
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4-14
4 To unlock the steering
1. Open the steering lock cap, and then insert
the key.
2. Turn the key 1/8 turn counterclockwise to re-
lease the lock.
3. Remove the key, and then close the steering
lock cap.
EBU18880Seat To remove the seat
Pull the seat lock lever upward and pull up the seat
at the rear.To install the seat
Insert the projections on the front of the seat into
the seat holders and push down on the seat at the
rear.
NOTE:Make sure that the seat is securely fitted.EBU18990Adjusting the front shock absorber as-
semblies The spring preload can be adjusted to suit the rid-
er’s weight and the riding conditions.
Adjust the spring preload as follows.
1. Seat lock lever
1. Projection
2. Seat holder
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4-15
4Turn the adjusting ring in direction (a) to increase
the spring preload and thereby harden the suspen-
sion, and in direction (b) to decrease the spring
preload and thereby soften the suspension.
NOTE:A special wrench can be obtained at a Yamahadealer to make this adjustment.1. Spring preload adjusting ring
2. Position indicator
1. Special wrenchSpring preload setting:
Minimum (soft):
1
Standard:
3
Maximum (hard):
5
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4-16
4
WARNING
EWB00400Always adjust the shock absorber assemblies
on the left and right side to the same setting.
Uneven adjustment can cause poor handling
and loss of stability, which could lead to an ac-cident.EBU19040Adjusting the rear shock absorber as-
sembly The spring preload can be adjusted to suit the rid-
er’s weight and the riding conditions.
Adjust the spring preload as follows.
1. Loosen the locknut.
2. Turn the adjusting nut in direction (a) to in-
crease the spring preload and thereby harden
the suspension, and in direction (b) to de-
crease the spring preload and thereby soften
the suspension.
NOTE:
A special wrench can be obtained at a Yamaha
dealer to make this adjustment.
The spring preload setting is determined by
measuring distance A, shown in the illustration.
The shorter distance A is, the higher the spring
preload; the longer distance A is, the lower the
spring preload. With each complete turn of the
adjusting nut, distance A is changed by 1.5 mm(0.06 in).1. Locknut
2. Spring preload adjusting nut
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4-17
4
CAUTION:ECB00090Never turn an adjusting mechanism beyondthe minimum and maximum settings.3. Tighten the locknut to the specified torque.
CAUTION:ECB00080Always tighten the locknut against the adjust-
ing nut, and then tighten it to the specifiedtorque.
1. Special wrenchSpring preload setting:
Minimum (hard):
Distance A = 218.5 mm (8.6 in)
Standard:
Distance A = 228.5 mm (9.0 in)
Maximum (soft):
Distance A = 233.5 mm (9.2 in)
1. Distance ATightening torque:
Locknut:
42 Nm (4.2 m·kgf, 30 ft·lbf)
1
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4-18
4
WARNING
EWB00450This shock absorber assembly contains highly
pressurized nitrogen gas. If the shock absorb-
er assembly is damaged, it could explode
causing injury or property damage. Shock ab-
sorber cylinder damage could also result in
poor handling which could cause an accident.
Do not tamper with or attempt to open the
cylinder assembly.
Do not subject the shock absorber assembly
to an open flame or other high heat.
Do not deform or damage the cylinder in any
way.
Do not dispose of a damaged or worn out
shock absorber assembly yourself. Take the
shock absorber assembly to a Yamaha deal-er for any service.
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5-1
5
EBU19200
PRE-OPERATION CHECKS
EBU19220Pre-operation check list Before operating this ATV, be sure to check the items listed in the following table.NOTE:The maintenance of some items in the table has to be performed by a Yamaha dealer. Refer to the “Periodic
maintenance and lubrication chart” on page 8-3 to determine which service should be performed by aYamaha dealer.
ITEM ROUTINE PAGE
FuelCheck fuel level in fuel tank, and add recommended fuel if neces-
sary.
Check fuel line for leakage. Correct if necessary.4-10, 5-3
Engine oilCheck oil level in engine, and add recommended oil to specified lev-
el if necessary.
Check ATV for oil leakage. Correct if necessary.5-3, 8-10
Front brakeCheck operation. If soft or spongy, have Yamaha dealer bleed hy-
draulic system.
Check brake pads for wear, and replace if necessary.
Check brake fluid level in reservoir, and add recommended brake
fluid to specified level if necessary.
Check hydraulic system for leakage. Correct if necessary.5-3, 8-20, 8-21, 8-22
Rear brakeCheck operation. If soft or spongy, have Yamaha dealer bleed hy-
draulic system.
Check brake pads for wear, and replace if necessary.
Check brake fluid level in reservoir, and add recommended brake
fluid to specified level if necessary.
Check hydraulic system for leakage. Correct if necessary.5-3, 8-20, 8-21, 8-23
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5-2
5
WARNING
EWB00480Always inspect your ATV each time you use it to make sure it is in safe operating condition.
Always follow the inspection and maintenance procedures and schedules described in the Owner’sManual. Failure to inspect increases the possibility of an accident or equipment damage.ClutchCheck operation, and correct if necessary.
Lubricate cable if necessary.
Check lever free play, and adjust if necessary.8-26
Throttle leverMake sure that operation is smooth. Lubricate cable and lever hous-
ing if necessary.
Check cable free play, and adjust if necessary.5-4, 8-19
Control cablesMake sure that operation is smooth. Lubricate if necessary. 8-30
Drive chainCheck chain slack, and adjust if necessary.
Check chain condition. Lubricate if necessary.5-4, 8-27, 8-30
Wheels and tiresCheck wheel condition, and replace if damaged.
Check tire condition and tread depth. Replace if necessary.
Check air pressure. Correct if necessary.5-4, 5-5, 5-6
Brake and shift pedalsMake sure that operation is smooth. Lubricate pedal pivoting points
if necessary.8-32
Brake and clutch leversMake sure that operation is smooth. Lubricate lever pivoting points if
necessary.8-31
Chassis fastenersMake sure that all nuts, bolts and screws are properly tightened. 5-7
Instruments, lights and
switchesCheck operation, and correct if necessary. 5-7 ITEM ROUTINE PAGE
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5-3
5
EBU19540Fuel Make sure that there is sufficient fuel in the tank.
(See page 4-10.)
WARNING
EWB00520
Do not overfill the fuel tank. Fuel expands
when it heats up. If the fuel tank is overfilled,
fuel could spill out due to heat from the en-
gine or the sun.
Be careful not to spill fuel, especially on the
engine or exhaust pipe which can cause a
fire and severe injury. Wipe up any spilled
fuel immediately.
Do not refuel right after the engine has been
running and is still very hot.
Be sure the fuel tank cap is closed securely.EBU19560Engine oil Make sure that the engine oil is at the specified lev-
el. Add oil as necessary. (See page 8-10.)
EBU19710Front and rear brakes Brake lever and brake pedal
Check that there is no free play in the brake le-
ver. If there is free play, have a Yamaha dealer
check the brake system.
Check for correct brake pedal height. (See page
8-23.) If the pedal height is incorrect, have a
Yamaha dealer adjust it.
Check the operation of the lever and pedal. They
should move smoothly and there should be a
firm feeling when the brakes are applied. If not,
have a Yamaha dealer check the brake system.
Brake fluid level
Check the brake fluid level. Add fluid if necessary.
(See page 8-21.)
Recommended brake fluid:
DOT 4
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