GENERAL INFORMATION
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FUEL SYSTEM
The following section isolates common fuel system problems under specific complaints. If there is a
good spark. Poor fuel flow may be preventing the correct amount of fuel from being supplied to the
spark plug. Troubleshoot the fuel system as follows:
1. Clogged fuel tank breather hose
2. Check that there is a sufficient amount of fuel in the rank
3. After attempting to start the engine. Remove the spark plug and check for fuel on the plug tip.
Note the following:
a. If there is no fuel visible in the plug. Check for a clogged fuel shutoff valve. Fuel filter or fuel
line
b. If there is fuel present on the plug tip. And the engine has spark. Check for an excessive
intake air leak or the possibility of contaminated or stale fuel
NOTE
If the UTV was not used for some time. And was not
properly stored. The fuel may have gone stale.
Where lighter parts of the fuel have evaporated.
Depending on the condition of the fuel. a no-start
condition can result
c. If there is an excessive amount of fuel on the plug. Check for a clogged air filter or flooded
carburetor.
Rich Mixture
The following conditions can cause a rich air/fuel mixture:
1. Clogged air filter
2. Choke valve stuck open
3. Float level too high
4. Contaminated float valve seat
5. Worn or damaged float valve and seat
6. Leaking or damaged float
7. Clogged carburetor jets
8. Incorrect carburetor jetting
Lean Mixture
The following conditions can cause a lean air/fuel mixture:
1. Intake air leak
2. Float level too low
3. Clogged fuel line, fuel filter or fuel shutoff valve
4. Partially restricted fuel tank breather hose
5. Plugged carburetor air vent hose
6. Damaged float
7. Damaged float valve
8. Incorrect carburetor jetting
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