37
39
Fuse.
NB:
For convenience, some engines are supplied with a
spare fuse and holder attached to the main engine fuse
holder.
Problem: Low power output
Possible Cause
Solution
Propeller is too big:
Change or depitch.
Check gearbox reduction ratio relative to propeller size:
Change the most appropriate item.
Blocked fuel filter:
Replace.
Blocked air filter:
Replace.
Air in fuel system:
Check system and bleed
Governor spring incorrectly mounted:
Dealer to adjust.
Single lever control not operating correctly:
Disconnect speed control cable and move the lever
by hand. Adjust cable.
The electrical load is too large on start up:
Disconnect or reduce the load.
Problem: Erratic running/hunting
Possible Cause
Solution
Air in fuel supply:
Check supply system for leaks and fix.
Fuel lift pump faulty:
Replace.
Clogged fuel filter:
Replace.
Fuel return not fed back to the fuel tank, or blocked pipe: Re-route pipe or clean.
Air filter blocked:
Replace.
Worn or blocked injector:
Service injectors.
Engine rpm in gear is too low, this must be 850 min:
Increase engine tick over speed.
Faulty stop solenoid:
Disconnect wiring to solenoid. If running improves
check for a wiring fault.
Broken fuel injection pump spring:
Replace, this is usually caused by water in the engine
oil/fuel.
Fuel suction head is too great:
Fit electric fuel lift pump.
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