2005 YAMAHA RHINO 660 check engine

8-25 1. Maximum level mark 2. Minimum level mark
3. Dipstick 4. Engine oil filler cap
1. Repère de niveau maximum 2. Repère de niveau minimum
3. Jauge
4. Bouchon de remplissage de l’huile moteur
1. Marca de nivel máximo 2. Marca de nivel mínimo
3. Varilla de medición
4. Tapón de llenado de aceite del motor
5. Remove the engine oil filler cap and wipe off
the dipstick with a clean rag.
6. Insert the dipstick in the oil filler hole (without
screwing it in), and then remove it again to
check the oil level.NOTE:_ The engine oil should be between the minimum
and maximum level marks. _7. If the engine oil is at or below the minimum
level mark, add sufficient oil of the recom-
mended type to raise it to the correct level.
8. Insert the dipstick into the oil filler hole, and
then tighten the oil filler cap.
9. Install the console.
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8-33
10. Start the engine and warm it up for several
minutes. While warming up, check for oil
leakage. If oil leakage is found, turn the en-
gine off immediately and check for the cause.
11. Turn the engine off, and then check the oil
level and correct it if necessary.
12. Install the console.
U5UG61.book Page 33 Monday, September 6, 2004 9:00 AM

8-47 1. Coolant reservoir cap
2. Maximum level mark 3. Minimum level mark
1. Bouchon du vase d’expansion
2. Repère de niveau maximum 3. Repère de niveau minimum
1. Tapón del depósito de líquido refrigerante
2. Marca de nivel máximo 3. Marca de nivel mínimo
EVU00730
Coolant
The coolant level should be checked before each
ride.
Checking the coolant level
1. Place the vehicle on a level surface.
2. Open the hood. (See pages 8-17–8-19 for
hood opening and closing procedures.)
3. Check the coolant level in the coolant reser-
voir when the engine is cold as the coolant
level varies with engine temperature.NOTE:_ The coolant should be between the minimum and
maximum level marks. _4. If the coolant is at or below the minimum level
mark, remove the reservoir cap, add coolant
to the maximum level mark, install the reser-
voir cap, and then close the hood.
Coolant reservoir capacity
(up to the maximum level mark):
0.35 L (0.31 Imp qt, 0.37 US qt)
U5UG61.book Page 47 Monday, September 6, 2004 9:00 AM

8-63 1. Air filter element
1.Élément du filtre à air
1. Filtro de aire
1. Air filter case check hose
1. Tube de vidange du boîtier de filtre à air
1. Tubo de vaciado de la caja del filtro de aire
4. Tap the air filter element to remove most of
the dust and dirt, and then blow the remain-
ing dirt out with compressed air.
5. Install the air filter element into the air intake
duct grill.
6. Install the air intake duct grill by installing the
quick fastener screws.
Cleaning the engine air filter elementNOTE:_ There is a check hose at the bottom of the air filter
case. If dust or water collects in this hose, empty
the hose and clean the air filter element and air fil-
ter case. _1. Remove the seats. (See page 4-43 for seat
removal and installation procedures.)
2. Remove the console. (See page 8-21 for
console removal and installation proce-
dures.)
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8-71
NOTE:_ The air filter element should be cleaned every 20–
40 hours. It should be cleaned and lubricated more
often if the vehicle is operated in extremely dusty
areas. Each time air filter element maintenance is
performed, check the air inlet to the air filter case
for obstructions. Check the air filter element rubber
joint to the carburetor and manifold fittings for an
airtight seal. Tighten all fittings securely to avoid
the possibility of unfiltered air entering the engine. _CAUTION:_ Never operate the engine with the air filter ele-
ment removed. This will allow unfiltered air to
enter, causing rapid engine wear and possible
engine damage. Additionally, operation with-
out the air filter element will affect carburetor
jetting with subsequent poor performance and
possible engine overheating.
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8-133
EVU01540
Troubleshooting charts
Starting problems or poor engine performance1. Fuel
Check if there is fuel
in the fuel tank.There is fuel.
No fuel.Fuel pump is
clogged.
Restart the engine.
No fuel.Supply fuel.
2. Compression
Use the electric
starter to see if
there is compression.There is compression.
Compression normal.
No compression.Ask a Yamaha dealer to
inspect.
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 starter.Spark is good.Ignition system is
normal.
Spark is weak.
Adjust the spark plug gap
or replace the spark plug. No spark.
Ask a Yamaha dealer to
inspect. 4. Battery
Use the electric starter.Engine turns over
quickly.Battery is good.
Engine turns over
slowly.Check the connections,
recharge.Check the
fuel flow.
Remove the fuel hose
from the fuel pump.
Ask a Yamaha dealer to
inspect.
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8-134
Engine overheatingNOTE:_ 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. _
WARNING
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
coolant reserver 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.
U5UG61.book Page 134 Monday, September 6, 2004 9:00 AM