ENGINE HARD TO START
OTHER
OBSERVATION
POSSIBLE CAUSES REMEDY
Intake valve and exhaust valve clearance
are off the ranges
Adjust valve clearance. Refer
to the valve clearance specs
Throttle cable adjustment
Water in carburetor, fuel pump, fuel
lines, water
-air separator bottle
and fuel
tank or contaminated fuel
Drain carburetor bowl. Drain
contaminated fuel completely
using fuel retraction devices.
Clean fuel system and fix the
water contamination root
cause. Refill fuel
Insufficient engine compression due to:
cylinder air leak, incorrect valve
clearance, valves leak, piston and piston
rings worn out, spark plug leak
Air leak from air box to carburetor, and
from carburetor to engine
Spark plug faulty, fouled or worn out
coil (Inside electronic
and bad connector
Defect CDI in control box
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