7-6 SERVICING INFORMATION
CARBURETOR
STARTING DIFFICULTY
IDLING OR LOW-SPEED TROUBLE
MEDIUM OR HIGH-SPEED TROUBLE
OVERFLOW AND FUEL LEVEL FLUCTUATIONS
Symptom, possible causes and remedy
• Clogged fuel pipe.
• Air leaking from joint between intake port and car-
buretor.
• Air leaking from carburetor joint.
• Improperly working starter plunger.
Clean.
Tighten or replace gasket.
Tighten or replace defective parts.
Adjust.
Symptom, possible causes and remedy
• Clogged or loose pilot jet.
• Air leaking from carburetor joint.
• Clogged pilot outlet port.
• Clogged bypass port.
• Starter plunger not fully closed.
Clean or tighten.
Tighten, or replace defective part.
Clean.
Clean.
Adjust.
Symptom, possible causes and remedy
• Clogged main jet.
• Clogged needle jet.
• Improperly working piston valve.
• Clogged fuel filter.
Clean.
Clean.
Adjust.
Clean or replace.
Symptom, possible causes and remedy
• Worn or damaged needle valve.
• Improperly working float.
• Foreign matter on the needle valve.
• Incorrect float chamber fuel level.
Replace.
Adjust or replace.
Clean or replace with needle valve seat.
Adjust float height.
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