User Guide

1. GENERAL INFORMATION
1-24
POOR PERFORMANCE (AT HIGH SPEED)
Faulty CDI unit
Faulty pulser coil
Improperly adjusted valve
clearance
Worn valve seat
Empty fuel tank
Clogged fuel tube or filter
Clogged Fuel tank cap breather
hole
Faulty auto fuel valve
Clean and unclog
Cam timing gear aligning
marks not aligned
Faulty spring
Inspection/Adjustment
Symptom
Probable Cause
Check ignition timing
Check carburetor jets
for clogging
Check fuel pump for
fuel supply
Correct timing
Incorrect timing
Check valve spring
tension
Check valve clearance
Fuel flows freely
Fuel flow restricted
Correct
Incorrect
Not clogged
Clogged
Correctly adjusted
Incorrectly adjusted
Not weakened
Weak spring
Check valve timing