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Ⅲ
MAINTAINENACE - TROUBLESHOOTING
TROUBLESHOOTING (ENGINE, CONTINUED)
SYMPTOM
"Weak in power"
compression is
proper and does
not misfire.
"Weak in power"
compression is
proper but misfires.
Engine overheats.
Rotational speed
fluctuates.
Recoil starter
malfunction.
POSSIBLE CAUSE
Air cleaner not clean?
Improper level in carburetor?
Defective spark plug?
Improper spark plug gap?
Water in fuel system?
Ignition coil defective?
Dirty spark plug?
Wrong fuel type?
Spark plug heat value improper?
Cooling fins dirty?
Governor adjusted correctly?
Governor
spring
defective
missing?
Fuel flow restricted?
Recoil mechanism clogged with dust
and dirt?
Spiral spring loose?
Clean or replace air cleaner.
Check float adjustment.
Rebuild carburetor.
Clean or replace spark plug.
Set to proper gap.
Flush fuel system and replace with
correct type fuel.
Replace ignition coil.
Clean or replace spark plug.
Flush fuel system, and replace
with correct type of fuel.
Replace with correct type of spark
plug.
Clean cooling fins.
Adjust governor.
or
Replace governor spring.
Check entire fuel system for leaks or
clogs.
Clean recoil assembly with soap and
water.
Replace spiral spring.
10
SOLUTION
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