2006 YAMAHA YFM700R engine

8-61
NOTE:
The sponge material should be wet but not drip-
ping.
9. Pull the sponge material over its frame.
10. Install the air filter element by installing the
wing bolt.
11. Install the air filter case cover by hooking
the holders onto the filter case.
12. Install the seat.
NOTE:
The air filter element should be cleaned every
20-40 hours. It should be cleaned and lubricated
more often if the ATV is operated in extremely
dusty areas. Each time air filter element mainte-
nance is performed, check the air inlet to the air
filter case for obstructions. Check the air intake
duct between the air filter case and the throttle
body and the manifold fittings for an airtight seal.
Tighten all fittings securely to avoid the possibili-
ty of unfiltered air entering the engine.
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8-63
cC
Never operate the engine with the air filter
element removed. This will allow unfiltered
air to enter the engine, causing rapid engine
wear and possible engine damage.
Additionally, operation without the air filter
element will affect the fuel injection system
with subsequent poor performance and pos-
sible engine overheating.
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8-65
EBU15980
Idle speed adjustment
NOTE:
A diagnostic tachometer must be used for this
procedure.
1. Start the engine and warm it up for a few
minutes at approximately 1,000 to 2,000
r/min. Occasionally rev the engine to 4,000
to 5,000 r/min. The engine is warm when it
quickly responds to the throttle.
2. Connect the tachometer to the spark plug
lead, and then set the idle to the specified
idling speed by turning the idle adjusting
screw. Turn the screw in direction ato
increase the engine speed, and in direction
bto decrease the engine speed.
1
a
b
1. Idle adjusting screw1. Vis de réglage du ralenti1. Tornillo de ajuste del ralentí
Specified idle speed:
1,500–1,700 r/min
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8-67
EBU03030
Valve clearance adjustment
The correct valve clearance changes with use,
resulting in improper fuel/air supply or engine
noise. To prevent this, the valve clearance must
be adjusted regularly. This adjustment however,
should be left to a professional Yamaha service
technician.
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8-69
EBU03070
Throttle lever adjustment
NOTE:
Adjust the engine idling speed before adjusting
the throttle lever free play.
1. Loosen the locknut.
2. Turn the adjusting bolt until the throttle
lever free play is 2–4 mm.
3. Tighten the locknut.
1. Locknut 2. Adjusting bolt a. Free play1. Contre-écrou 2. Boulon de réglage a. Jeu1. Contratuerca 2. Perno de ajuste a. Juego libre
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8-93
EBU15752
Adjusting the drive chain slack
1. Loosen the rear axle pinch bolts.
2. Insert a rod of a diameter of 8 mm and a
length of 10 cm into one of the holes in the
drive chain tensioner as shown.
3. Shift the transmission into the neutral posi-
tion.
4. To loosen the drive chain, push the ATV
forward, and to tighten the drive chain,
push the ATV backward.
cC
Improper drive chain slack will overload the
engine as well as other vital parts of the ATV
and can lead to chain slippage or breakage.
To prevent this from occurring, keep the
drive chain slack within the specified limits.
4
2
11
3
1. Rear axle pinch bolt (×4) 2. Rod
3. Drive chain tensioner 4. Hole (×3)
1. Boulon de pincement de 2. Tige
l’essieu arrière
3.
Tendeur de chaîne de transmission4. Orifice (×3)1.Perno de sujeción del eje trasero2. Barra
3. Tensor de la cadena de 4. Orificio (×3)
transmisión
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8-99
2. Wipe the drive chain dry.
3. Thoroughly lubricate the drive chain with a
special O-ring chain lubricant.
cC
Do not use engine oil or any other lubricants
for the drive chain, as they may contain sub-
stances that could damage the O-rings.
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8-101
EBU05700
Cable inspection and lubrication
w
Inspect cables frequently and replace if dam-
aged. Corrosion can result when the outer
covering of control cables becomes dam-
aged. Cables can also become frayed or
kinked. Operation of controls could be
restricted, which could cause an accident or
injury.
Lubricate the inner cables and the cable ends. If
the cables do not operate smoothly, ask a
Yamaha dealer to replace them.
Recommended lubricant:
Engine oil
1S3-9-60 9-11 4/27/05 2:13 PM Page 8-101