Ix: Troubleshooting - Generac Power Systems R100 Operator's Manual

IX: Troubleshooting

1. ENGINE STARTING DIFFICULTLY:
TROUBLE
There is not enough fuel in fuel tank and fuel shutoff
is closed.
Air vent in the fuel filler cap is clogged
Fuel shutoff is clogged
Improper or clogged main fuel flow hole.
Needle valve is not closed properly or start hole is
clogged.
Float is damaged or sticking.
Fuel is too filthy or deteriorated
There is water in fuel.
Too much fuel in engine
Wrong fuel brand
Too much carbon deposit and dirt around
electrodes.
Electrodes are burn damaged seriously or insulators
damaged.
Improper electrodes gap.
High–tension line is damaged.
Ignition coil is damaged.
Magneto loses magnetism.
Abnormal gap between ignition coil and flywheel.
TROUBLE
Piston ring is worn to or even over its wear limit
Piston ring is broken.
Piston ring is sticking.
Spark plug is not installed tight or without a gasket.
Air leakage between cylinder block and cylinder head.
Air leakage in the valves
If engine will still not start, contact Generac Power Systems.
CAUSE
CAUSE
REMEDY
Fill fuel, open fuel shutoff.
Dredge air vent.
Clean first and then dredge
Readjust or clean, blow to get through.
Dismantle needle valve and repair, clean, blow to get
through.
Repair float
Replace
Replace
Drain extra fuel, dry up spark plug electrodes.
Select proper fuel brand corresponding with the
requirements.
Clear away.
Replace spark plug.
Adjust to proper value.
Replace
Replace
Replace
Adjust gap
REMEDY
Replace
Replace
Clear up carbon fouling.
Tighten with a gasket installed.
Check cylinder gasket, and the flatness of the surface
where cylinder block contacts the cylinder head
Tighten cylinder head bolts in proper order to proper
torque.
Check valve clearance and tightness. Repair if
necessary.
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