Rotax 912-UL Repair Manual

Clean and tighten
magnetic drain
plug
Ml2xl,5 to
25
Nm
(220
in.lb.). Set both studs
M8x23/
14 secured with
LOCTITE 221into
gear
cover
and
tighten
to
l0 Nm
(90
in.lb.).
Install fuel
pump
along
with insulating
flange; add spring
washers A8 and tighten
hex.
nuts
M8 with
22 Nm
(195
in.lb).
7.ll) Oil
pump
assembly
hess dowcl
tube O
5x28 into
pump
shaft I
utilizing fixtu*
to
position
it symmeuically and
wittr
slot
on centre
line. Lub,ricate
shaft bearingin oil
pump
housing,
fit
pump
shaft,
push
driving
pin
0
4x15,8
into
position
on shaft and
install
revolving
piston
O
and rotor
O.
Inscrt
Grings
I
G'2,7
an d2n,87
-
1,78
and
fit oil
pump
housing
to crankcase.
IATTENTION: DoweltubeOonpumpshafthastoengage
in camshaft
Push both locating
pins
@
4x15,8 into
pump
housing,
place
O-ring 57-3 O
in
position
and
attach
pump
cover,
using
Allen scrcws
M6x45 and spring
washers.
Tighten
v/ith
l0
Nm
(90
in.lb.).
Fit ball 8 mm
@,46
mm long
compression spring 0 and
tighten
cap screw Ml2xl to
25 Nm
(220
in.lb.). If
rcmoved,
re-fit oil
filter nipple
and
tighten
to 60
Nm
(530
in.lb.).
Slightly
oil rubber
gasket
of
oil
filter,
screwon oil
filterup
to
stop on oil-pump
housing
and tighten by
half
a
turn.

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)