check engine YAMAHA BREEZE 2003 User Guide

8-37
NOTE:
The air filter element should be cleaned every
20 – 40 hours. It should be cleaned and lubricat-
ed more often if the machine is operated in
extremely dusty areas. Each time air filter ele-
ment maintenance is performed, check the air
inlet to the air filter case for obstructions. Check
the air filter case 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.cCNever operate the engine with the air filter
element removed. This will allow unfiltered
air to enter, causing rapid engine wear and
possible engine damage. Additionally, opera-
tion without the air filter element will affect
carburetor jetting with subsequent poor per-
formance and possible engine overheating.
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8-95
EBU00440Troubleshooting chart1. FuelCheck if there is
fuel in the fuel
tank.2. CompressionUse electric starter
to see if there is
compression.3. IgnitionRemove plug and
check electrodes.
Wet
Wipe clean with dry
cloth.
Dry
Attach plug cap and
ground to chassis.
Use electric
starter.
Spark weak.Spark good.
Ignition system normal.
No spark.
Ask a Yamaha dealer to inspect.
Adjust plug gap or
replace plug.
There is compresson.
Compression normal.Ask a Yamaha dealer to inspect.
No compression.
There is fuel.
Turn the fuel
cock to “OFF”.Remove the
fuel hose from
the fuel cock.
Some fuel.
Turn the fuel
cock to “RES”.
Restart engine.
No fuel.
Supply fuel.
4. BatteryUse electric
starter.
Engine turns
over quickly.
Battery good.
Engine turns
over slowly.
Check fluid, recharge,
check connections.
Check fuel flow.
Water or dirt
mixed in fuel.Turn the fuel
cock to “ON”.
No fuel.
Fuel cock clogged.
Clean the fuel filter
and the fuel tank.
Clean fuel cock.
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