Hsun HS700UTV - Rich Mixture; Lean Mixture; Engine; Engine Smoke

GENERAL INFORMATION
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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
ENGINE
Engine Smoke
The color of engine smoke can help diagnose engine problems or operating conditions
Black smoke
Black smoke is an indication of a rich air/fuel mixture