Onan 6GO-F - Service Diagnosis

SERVICE DIAGNOSIS
POSSIBLE CAUSE
GENERATOR OVERHEATING
Overloaded.
Reduce
load.
Brush rig out of position. Be sure to line up marks. See Brush
Rig.
VOLTAGE DROPS UNDER HEAVY LOAD
Engine lacks power.
Poor compression.
Faulty carburetion.
Restricted air cleaner.
Excessive choking.
Ca.rbon in cylinder.
Restricted exhaust line.
See remedies for engine missing under
heavy load.
Tighten cylinder head and spark plugs.
If still not' corrected, grind the
valves. Replace piston rings, if
necessary. Refer to MAINTEtIJANCE AND
REPAIR.
Check the fuel system. Clean, ad-·
just or replace parts necessary.
Clean and refill.
See that choke opens properly.
Remove carbon.
Clean
or increase the size.
ENGINE MISFIRES AT LIGHT LOAD
Carburetor idle adjustment
set wrong or clogged.
Spark
plug gaps too narrow.
Intake air leak.
Faulty ignition.
Uneven compression.
Worn intake valve stems or
guides.
Adjust, clean if needed.
Adjust
to correct gap, 0.02,5".
Tighten or replace gaskets.
Clean, adjust, or replace breaker
points, plugs, condenser, coil, etc.,
or retimeignition. .
Tighten
cylinder head and spark plugs.
If still not corrected, grind valves.,
Replace piston rings, if necessary.
Replace valves or guides.