2008 Yamaha Motorsports Rhino 450 Auto. 4x4 Special Edition Owners Manual - Page 155

2008 Yamaha Motorsports Rhino 450 Auto. 4x4 Special Edition Manual

Page 155 highlights

EVU01020 Troubleshooting charts Starting problems or poor engine performance 1. Fuel Check if there is fuel in the fuel tank. There is fuel. Remove the fuel hose from the fuel pump. Check the fuel flow. No fuel. Fuel pump is clogged. No fuel. Supply fuel. Restart the engine. Ask a Yamaha dealer to inspect. 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. Wet Wipe clean with dry cloth. Spark is good. Attach spark plug cap and ground to chassis. Use the electric starter. Ignition system is normal. Dry Spark is weak. Adjust the spark plug gap or replace the spark plug. 4. Battery Use the electric starter. Engine turns over quickly. Engine turns over slowly. No spark. Battery is good. Check the connections, recharge. Ask a Yamaha dealer to inspect. 8-57

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8-57
EVU01020
Troubleshooting charts
Starting problems or poor engine performance
1. 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.
Wet
Wipe clean with dry cloth.
Dry
Attach 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.