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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 much: Fit electric fuel lift pump.
Problem: Hunting at idle
Possible Cause Solution
Idle adjustment screw may need adjusting: speak to Beta Marine for advice with idle adjustment
- discuss problem.
Problem: Hunting at higher speeds
Possible Cause Solution
Fuel supply problem: Change fuel filters and check fuel supply.
Problem: Low power output
Possible Cause Solution
Propeller is too big: Change or depitch.
Check gearbox reduction ratio relative to propeller size: Change.
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.
1640_Aug_2013.qxd:beta 1660 manual 18/11/13 10:48 Page 43
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