8-149
EBU07240
Troubleshooting chart
Starting problems or poor
engine performance
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
starter.Spark weak.
Spark good.Ignition system normal.
No spark.
Ask a Yamaha dealer to inspect.
Adjust the spark plug gap
or replace the spark plug.
There is compresson.Compression normal.
Ask a Yamaha dealer to inspect.No compression.
4. Battery
Use the electric
starter
Engine turns over
quickly.Battery is good.
Check the connections, and charge the battery if necessary.Engine turns over
slowly
Check the fuel
flow.
1. Fuel
Check if there is
fuel in the fuel
tank.
There is fuel.Turn the fuel
cock to “OFF”.
Remove the
fuel hose from
the fuel cock.Turn the fuel cock
lever to “ON”.No fuel.Fuel cock clogged.
Some fuel.Turn the fuel cock
lever to “RES”.Restart the engine.
No fuel.Supply fuel.
Clean the fuel
cock.
5TG-9-62 9-11 5/12/05 6:14 PM Page 8-149
10-5
Model YFZ450V
Brake:
Front brake type Dual disc brake
operation Right hand operation
Rear brake type Single disc brake
operation Right foot operation
Suspension:
Front suspension Double wishbone
Rear suspension Swingarm (link suspension)
Shock absorber:
Front shock absorber Coil spring/Gas-Oil damper
Rear shock absorber Coil spring/Gas-Oil damper
Wheel travel:
Front wheel travel 230.0 mm
Rear wheel travel 270.0 mm
Electrical:
Ignition system D.C. C.D.I.
Generator system A.C. magneto
Battery type/voltage capacity GT7B-4/12V, 6.5 Ah
Headlight type: Krypton bulb
5TG-9-62 9-11 5/12/05 6:14 PM Page 10-5
