Rotax 912-UL User Manual

d03936
page 12 - 1
Jan. 01/2007
Effectivity: 912 Serie
OM Edition 1 / Rev. 0
BRP-Rotax
Engine does not start
POSSIBLE CAUSE:
a - ignition off
b - closed fuel tap or clogged filter
c - no fuel in tank
d - starting speed too low, faulty or
discharged battery
e - starting speed too low, start
problems on cold engine
12) Trouble shooting
▲ WARNING: Only qualified staff (authorized by the Aviation Authorities)
trained on this particular engine, is allowed to carry out
maintenance and repair work.
If the following hints regarding remedy do not solve the
problem, contact an authorized workshop. The engine must
not be operated until the problem is rectified.
REMEDY:
switch on.
open tap, clean or renew filter,
check fuel system for leaks.
refuel.
fit fully charged battery.
use top quality, low friction oil;
allow for sufficient cooling period
to counter for performance drop
on hot starter; pre-heat engine.
Engine idles rough after warm-up period, smoky exhaust emission
POSSIBLE CAUSE:
a - starting carb activated
Low oil pressure
POSSIBLE CAUSE:
a - not enough oil in oil tank
REMEDY:
close starting carb.
REMEDY:
check oil return line for free pas-
sage, renew oil seal.

Rotax 912-UL Specifications

General

Displacement	1211 cc
Bore x Stroke	79.5 mm x 61 mm
Compression Ratio	9.0:1
TBO (Time Between Overhaul)	2000 hours
Engine Type	4-cylinder, 4-stroke
Power Output	80 hp
Cooling System	Liquid/air-cooled
Fuel Type	Avgas 100LL or unleaded automotive gasoline
Oil Capacity	3 liters
Fuel System	2 carburetors
Oil System	Dry sump forced lubrication with separate oil tank
Reduction Gear Ratio	2.43:1
Max Continuous Power	75 hp (56 kW)