Troubleshooting (Engine) - MULTIQUIP GAC-6HZR Operation And Parts Manual

symptom
Difficult to start. Fuel is
available but no SPARK
at spark plug.
Difficult to start. Fuel is
available and SPARK
is present at the spark
plug.
Difficult to start. Fuel
is available, SPARK is
present at the spark
plug and compression
is normal.
Difficult to start. Fuel
is available, SPARK is
present at the spark
plug and compression
is low.
No fuel present at
carburetor.
Weak in power.
Compression is proper
and does not misfire.
page 28 — gaC6HZR 60 HZ geNeRaTOR• OpeRaTiON aNd paRTs maNual — Rev. #1 (03/31/10)
Table 6. engine Troubleshooting
possible Cause
Spark plug bridging?
Carbon deposit on spark plug?
Short circuit due to deficient spark plug
insulation?
Improper spark plug gap?
ON/OFF switch is shorted?
Ignition coil defective?
Improper spark gap, points dirty?
Condenser insulation worn or short
circuiting?
Spark plug wire broken or short circuiting?
Wrong fuel type?
Water or dust in fuel system?
Air cleaner dirty?
Suction/exhaust valve stuck or protruded?
Piston ring and/or cylinder worn?
Cylinder head and/or spark plug not
tightened properly?
Head gasket and/or spark plug gasket
damaged?
Fuel not available in fuel tank?
Fuel cock does not open properly?
Fuel filter clogged?
Fuel tank cap breather hole clogged?
Air in fuel line?
Air cleaner dirty?
Improper level in carburetor?
Defective spark plug?

trOublesHOOting (engine)

Check gap, insulation or replace spark plug.
Clean or replace spark plug.
Check spark plug insulation. Replace if
worn.
Set to proper gap.
Check switch wiring. Replace switch.
Replace ignition coil.
Set correct spark gap and clean points.
Replace condenser.
Replace defective spark plug wiring.
Flush fuel system and replace with correct
type of fuel.
Flush fuel system.
Clean or replace air cleaner.
Reseat valves.
Replace piston rings or piston.
Torque cylinder head bolts and spark plug.
Replace head and spark plug gaskets.
Fill with correct type of fuel.
Apply lubricant to loosen fuel cock lever.
Replace if necessary.
Replace fuel filter.
Clean or replace fuel tank cap.
Bleed fuel line
Clean or replace air cleaner.
Check float adjustment. Rebuild carburetor.
Clean or replace spark plug.
solution