17
MAINTENANCE
SYMPTOM
POSSIBLE CAUSE
SOLUTION
Fuel not available in fuel
tank?
Fill with correct type of fuel.
Fuel filter clogged?
Replace fuel filter.
Fuel tank cap breather hole
clogged?
Clean or replace fuel tank cap.
No fuel present
at the
carburetor.
Air in fuel line?
Bleed fuel line.
Air cleaner not clean?
Clean or replace air cleaner.
Check float adjustment.
Improper level in carburetor?
Rebuild carburetor.
Defective spark plug?
Clean or replace spark plug.
"Weak in power"
compression is
proper and does
not misfire.
Improper spark plug gap?
Set to proper gap.
Water in fuel system?
Flush fuel system and replace with
correct type fuel.
Ignition coil defective?
Replace ignition coil.
"Weak in power"
compression is
proper but
misfires.
Dirty spark plug?
Clean or replace spark plug.
Wrong fuel type?
Flush fuel system, and replace with
correct type of fuel.
Spark plug heat value
improper?
Replace with correct type of spark plug.
Engine
overheats.
Cooling fins dirty?
Clean cooling fins.
Governor adjusted
correctly?
Adjust governor.
Governor spring defective or
missing?
Replace governor spring.
Rotational
speed
fluctuates.
Fuel flow restricted?
Check entire fuel system for leaks or
clogs.
Recoil mechanism clogged
with dust and dirt?
Clean recoil assembly with soap and
water.
Recoil starter
malfunction.
Spiral spring loose?
Replace spiral spring.
Summary of Contents for PFG10 Series
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