TROUBLESHOOTING
15
SYMPTOM CAUSE CORRECTIVE ACTION
Engine fails to Low voltage on Replace/recharge the
fire starting battery starting battery
Bad glow plug(s) Inspect/replace bad glow plug(s)
Insufficient priming Repeat priming procedure
“Flooded” due to Disconnect battery, remove
excessive priming glow plugs, and rotate propeller
several times to“clear” cylinder
Engine fires but Over primed Disconnect battery and rotate
does not run propeller several times to
“clear” cylinder
Incorrect glow Remove plugs and verify
plugs proper heat range
Engine starts but Mixture too rich
Close high speed needle valve(s)
slows down and 1/2 turn and start again. Repeat
then stops
until engine is running smoothly.
Engine starts, Mixture too lean
Open high speed needle valve(s)
speeds up, and 1/2 turn and start again. Repeat
then quits
until engine is running smoothly.
Engine quits Mixture too rich
Close high speed needle valve(s)
when starter 1/2 turn and restart
battery is
removed Incorrect glow plugs Change glow plugs
Incorrect or bad fuel Change fuel
Rough idle Plug Change plug type
In the event that none of the above procedures results in the engine running
properly, contact our service department for suggestions at:
Horizon Service Center
4105 Fieldstone Road
Champaign, Illinois 61822
217-355-9511 (Mon–Fri 8:00–5:00 CST)
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