2004 YAMAHA GRIZZLY 125 check engine

8-31
EBU14840
Engine air filter element and V-belt case air
filter element cleaning
Both air filter elements should be cleaned at the
specified intervals in the periodic maintenance
chart.
Engine air filter element
NOTE:
There is a check hose at the bottom of the air fil-
ter case. If dust or water collects in this hose,
empty the hose and clean the air filter element
and air filter case.
1. Remove the seat.
2. Remove the breather hose, and then loosen
the clamp screw.
3. Remove the air filter case cover by remov-
ing the screws.
q
1
3
4
5
2
2
2
2
1. Check hose1. Flexible de contrôle1. Manguito de comprobación
1. Air filter case cover 2. Screw (
× 4)
3. Breather hose 4. Clamp 5. Clamp screw
1. Cache du boîtier de filtre à air 2.Vis (× 4)
2. Reniflard 3. Bride 5. Vis de coiler
1.Tapa de la caja del filtro de aire2. Tornillo (× 4)
3. Tubo de ventilación 4. Abrazadera 5. Tornillo de sujeción
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8-37
NOTE:
The air filter element should be cleaned every
20-40 hours. It should be cleaned and lubricated
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.
cC
Never 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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8-99
EBU00440
Troubleshooting chart
1. Fuel
Check if there is
fuel in the fuel
tank.
2. Compression
Use electric starter
to see if there is
compression.
3. Ignition
Remove plug and
check electrodes.
WetWipe clean with dry
cloth.
DryAttach 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. Battery
Use 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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