2006 YAMAHA YFM700R check engine

8-39
cC
Hard water or salt water is harmful to the
engine. You may use soft water if you can’t
get distilled water.
NOTE:
8If water is added, have a Yamaha dealer
check the antifreeze content of the coolant as
soon as possible.
8The radiator fan operation is completely auto-
matic. It is switched on or off according to the
coolant temperature in the radiator.
If your ATV overheats, see page 8-138 for
details.
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8-47
12. Install the radiator cap and the coolant
reservoir cap.
13. Start the engine and let it idle for several
minutes. Stop the engine, and then check
the coolant level in the radiator. If it is low,
add more coolant until it reaches the top of
the radiator.
14. Check the coolant level in the reservoir. If it
is low, add coolant to the maximum level
mark.
15. Start the engine and then check for coolant
leakage.
NOTE:
If any leakage is found, have a Yamaha dealer
check the cooling system.
16. Install the panel.
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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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8-137
EBU15871
Troubleshooting charts
Starting problems or poor engine performance
1. Fuel
Check the fuel
level in the fuel
tank.
2. Compression
Use the electric
starter to see if there
is compression
3. Ignition
Remove the spark plug
and check the electrodes.
WetWipe clean with
dry cloth
DryAttach spark plug cap
and ground to chassis.Use the electric
starterSpark weak
Spark goodIgnition system normal
No spark
Ask a Yamaha dealer to inspect
Adjust the spark plug gap
or replace the spark plug.
There is compressonCompression normal
Ask a Yamaha dealer to inspectNo compression
There is enough fuel.Check the compression.
Supply fuel.There is no fuel.The engine does not start.
Check the compression.
4. Battery
Use the electric
starter
Engine turns over
quickly.Battery is good.
Check the connections.Engine turns over
slowly
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8-138
Engine overheating
NOTE:
If it is difficult to get the recommended coolant, tap water can be temporarily used, provided that it is
changed to the recommended coolant as soon as possible.
w
Wait for the engine and radiator to cool before removing the radiator cap. You could be burned
by hot fluid and steam blown out under pressure. Always put a thick rag over the cap when
opening. Allow any remaining pressure to escape before completely removing the cap.
Wait until the
engine has cooled.Check the coolant level in the
reservoir tank and/or radiator.
Level is OK.
Level is low, check the
cooling system for leakage.
No
leakage.
Leakage.Ask a Yamaha dealer
to inspect and repair
the cooling system.
Add coolant.
(See NOTE.)
Restart the engine. If the engine overheats
again, ask a Yamaha dealer to inspect and/or
repair the cooling system.
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