2002 YAMAHA BLASTER 200 check engine

8-31
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 filter element
maintenance is performed, check the air inlet to
the filter case for obstructions. Check the air
cleaner rubber joint to the carburetor and mani-
fold fittings for an air-tight seal. Tighten all fit-
tings securely to avoid the possibility of unfil-
tered 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 filter element will affect car-
buretor jetting with subsequent poor perfor-
mance and possible engine overheating.
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8-33
EBU00298
Carburetor settings
In extremely cold weather, it is necessary to
change the carburetor settings to maintain opti-
mum engine performance and to prevent engine
damage.
w
8Improperly servicing or adjusting the car-
buretor could cause malfunction with the
possibility of an accident or the carburetor
could leak fuel, which would be a fire haz-
ard.
8Carburetor adjustments should only be
performed by a Yamaha dealer. Do not
attempt to perform these procedures
unless you have mechanical knowledge
and the necessary tools.
8Do not perform this procedure while the
engine is hot. Place a rag under the carbu-
retor to catch any fuel. Wipe up any spilled
fuel completely.
8After servicing the carburetor, always
check throttle operation before operating
the ATV to make sure it is working correct-
ly.
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8-87
EBU00440
Troubleshooting chart
Check fuel flow
1. Fuel
Check if there is
fuel in the fuel
tank
2. Compression
Kick the kick lever to
see if there is
compression
3. Ignition
Remove plug and
check electrode
WetWipe clean with
dry cloth
DryAttach plug cap and
ground to chassisKick the kick
starter stronglySpark weak
Spark goodIgnition system normal
No spark
Ask a Yamaha dealer to inspect
Adjust plug gap or
replace plug
There is compressonCompression normal
Ask a Yamaha dealer to inspectNo compression
There is fuelTurn the fuel
cock to “OFF”
Remove the
fuel pipe
Water or dirt
mixed in fuel
No fuel
Fuel cock clogged
Some fuelTurn the fuel
cock to “RES”Restart engine
No fuelSupply fuel
Clean filter element
and fuel tank
Turn the fuel
cock to “ON”
Clean the fuel cock
5KJ-62 (8 shou) 4/23/01 3:08 PM Page 88