Rotax 912-UL Repair Manual

Thble
of contents
1) In1roduction....................o...............o.o...........................................................5
1.1) Engine number
1.2)
General
notes
Description
of design,
5.2)
Water
accumulator
5.9) Cylinder
head...........................
5.10)
Cylinder,
piston
5.11)
Hydraulic valve
tappet
5.12)
Crankcase
5.13)
Cleaning
2)
3)
4)
s)
6.2)
Crankcase
and
journal.
bearings
L7
l8
19
20
2T
22
22
23
23
23
24
24
25
25
6)
Inspection
and
judgement
of
components
and
units...............................20
Evaluation
of wear limits, clearances
and
tolerances
6.1)
Crankshaftass'y.......
6.2.1)
Measuring
of crankcase
.............
6.2.2)
Thrust ring halves
6.3)
Camshaft .................
6.3.1)
Hydraulic valve
tappets
6.4) Piston
6.4.1)
Piston rings.........
6.4.2)
Dimension
data
of
piston
and
piston
rings.........
6.4.3)
Piston
pin............
6.fl
Cylinder

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)