2006 YAMAHA RHINO 660 spark plug

8-135
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.
EE.book Page 135 Monday, July 11, 2005 2:32 PM

9-1
EVU01550
1-CLEANING AND STORAGE
A. CLEANING
Frequent, thorough cleaning of your vehicle will
not only enhance its appearance but will improve
its general performance and extend the useful life
of many components.
1. Before cleaning the vehicle:
a. Block off the end of the exhaust pipe to pre-
vent water entry. A plastic bag and strong
rubber band may be used.
b. Make sure the spark plug and all filler caps
are properly installed.
2. If the engine case is excessively greasy, ap-
ply degreaser with a paint brush. Do not ap-
ply degreaser to the wheel axles.
3. Rinse the dirt and degreaser off with a garden
hose. Use only enough pressure to do the
job.
EE.book Page 1 Monday, July 11, 2005 2:32 PM

9-9
3. Remove the spark plug, pour about one ta-
blespoon of SAE 10W30 or 20W40 motor oil
in the spark plug hole and reinstall the spark
plug. Ground the spark plug wire and turn the
engine over several times to coat the cylinder
wall with oil.
4. Lubricate all control cables.
5. Block up the frame to raise all wheels off the
ground.
6. Tie a plastic bag over the exhaust pipe outlet
to prevent moisture from entering.
7. If storing in a humid or salt-air atmosphere,
coat all exposed metal surfaces with a light
film of oil. Do not apply oil to any rubber parts
or the seat covers.
8. Remove the battery and charge it. Store it in
a dry place and recharge it once a month. Do
not store the battery in an excessively warm
or cold place (less than 0°C (30°F) or more
than 30°C (90°F)).NOTE:_ Make any necessary repairs before storing the ve-
hicle. _
EE.book Page 9 Monday, July 11, 2005 2:32 PM

10-4
Spark plug:
Type/manufacturer DPR8EA-9/NGK
Spark plug gap 0.8–0.9 mm (0.031–0.035 in)
Clutch type: Wet, centrifugal automatic
Transmission:
Primary reduction system V-belt
Secondary reduction system Shaft drive
Secondary reduction ratio 41/21
× 24/18
× 33/9 (9.544)
Transmission type V-belt automatic
Operation Right hand operation
Reverse gear 25/17 (1.471)
Sub transmission ratio low 35/17 (2.058)
high 28/19 (1.473)
Chassis:
Frame type Steel tube frame
Caster angle 5.0°
Trail 26.0 mm (1.02 in)
Tire:
Ty p e Tu b e l e s s
Size front 25
× 8-12NHS
rear 25 × 10-12NHS Model YXR66FAV
EE.book Page 4 Monday, July 11, 2005 2:32 PM