Rotax 912-UL Repair Manual

Version without
overload clutch:
Place
distance sleeve 35,2142115,5 and
four
disk springs 6, arranged against
each
otheron
prop
shaft.
Apply LOCTITE Anti-Seize
to splines and slidingramps andput
dog
hub
O on
shaft. Fit
pre-oiled
bearing bush @, using apairof circlip
pliers,
taking
care not
to
overstress
bush.
Fit dog
gear
€), apply LOCTITE Anti-Seize
to both sides
of thrust washer O and
fit
along with retaining
ring
@.
Place
gearbox
ass'y under
suitable
fixture
(see
i//.
44)
mdput
pressure
via
yoke
on dog
gear
O until
spring
package
@ is
compressed to flat. With
springs compressed flat, measure
distance
A
(from
top
edge of
retaining ring
@ to
lower
edge of
groove
O
in
prop
shaft). The
deter-
mined
distance A is
to be compensated
by shims
@
placed
without fail
between
eccenter collar O and
distance sleeve
35,2142115,5.
<)
NOTE:
On
engines
with vacuum
pump,
retaining
ring
@
is
executed
as
drive
gear.
Aftq
pfE-tensioning
of springs, refit
ring halves
@ and
release
disk-springs.
I
ATTENTION: Ring halves
to be
completelyinserted
in
groove
on
pro-
peller
shaft!

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)