Poor Performance at High Speeds

1 Check ignition timing and valve — clearance

Correct

2. Disconnect fuel tube at carburetor Fuel flows freely

3. Remove the carburetor and check for clogged jet(s)

Not clogged

Correct

5. Check valve spring

Poor Handling

2. If either wheel is wobbling

3. If the vehicle pulls to one side

-Incorrect

Fuel flow restricted

Clogged

Incorrect

Damaged

Check tire pressure

Improper valve clearance Faulty ignition control module Faulty ignition pulse generator

Lack of fuel in tank Clogged fuel line Clogged fuel tank vent tube Clogged fual valve Clogged fuel strainer

Clogged jets

Cam sprocket not installed properly

Faulty valve spring

Bearing adjustment nut too tight Damaged steering head bearing Bent steering stem

Excessive wheel bearing play Bent rim

Improperly Installed wheel hub or wheel Damaged swingarm pivot bearing Bent axle

Front brake caliper dragging one side Front and rear wheels not aligned Sent fork pipe(s) Bent swingarm Distorted frame

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