Rotax 912 series Operator's Manual page 56

Engine keeps running with ignition off
POSSIBLE CAUSE:
a - overheating of engine
Oil level is increasing
POSSIBLE CAUSE:
a - oil too cold during engine operation
Knocking under load
POSSIBLE CAUSE:
a - Octane rating of fuel too low
Engine hard to start at low temperature
POSSIBLE CAUSE:
a - starting speed too low
b - low charge battery
c - high oil pressure
d - oil pressure too low after cold start
Effectivity: 912 Serie
OM initial issue
REMEDY:
let engine cool down at idling at
approx. 2000 r.p.m.
REMEDY:
cover oil cooler surface, maintain
the oil temperature prescribed.
REMEDY:
use fuel with higher octane rating.
REMEDY:
preheat engine.
fit fully charged battery.
at cold start a pressure reading of
up to around 7 bar (102 psi) does
not indicate a malfunction.
too much resistance in the oil
suction tube at low temperatures.
Stop engine and preheat oil.
AIRCRAFT ENGINES
page 12 - 2
July 01/98