Northern Lights NL673L, Operator'S Manual

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ONL673L 7/13
32
Troubleshooting
ENGINE
PROBLEM POSSIBLE CAUSE RECOMMENDATION(S)
High Oil Consumption
Break-in period • Oil consumption decreases after break in.
Crankcase oil too light • Use proper viscosity oil.
Oil leaks • Check for leaks in lines around gaskets
and drain plug.
Engine Emits Black
Clogged or dirty air cleaner • Service air cleaner.
or Gray Exhaust Smoke
Defective muffl er • Have dealer check back pressure.
(back pressure too high)
Improper fuel • Use correct fuel for temperature.
Injection nozzles dirty • See your dealer.
Engine out of time • See your dealer.
Engine Emits
Improper fuel • Use correct fuel for temperature.
White Smoke
Cold engine • Warm up engine to normal operating
temperature.
Defective thermostat • Remove and check thermostat.
Engine out of time • See your dealer.
If you cannot correct problems with these procedures, see your Northern Lights dealer.