Rotax 912-UL Repair Manual

6.6) Cylinder head... ..................26
6.7)
Assembly
of cylinder
head
6.8) Overrunningclutch
.....................30
1n
6.9)
Ignition
cover ...-..............31
6.10)
Removal
of
water
pump
.-.................31
6.11)
Fitting
of rotary
seal and
installation
of
water
pump
......32
6.12) Water
pump
housing
6.13)
Drive for
mechanical rev
counter ....-.............34
6.14) Magneto housing.............
-..-.............34
6.15)
Reduction
gearbox...........
...-............34
6.15.1)
Checking of the slipping torque
.............35
6.15.2) Dis-assembly
of
gearbox
.....35
6.15.3) Dis-assembly
of overload clutch ............37
6.15.4) Re-assembly
of overload
clutch ............38
6.15.5) Re-assembly
of
gearbox...............
.........38
6.16)
Dis-assembly
of oil
pump..............
.....................40
6.16.1) Oil circuit
..........41
6.t6.2) Venting
of the
lubrication
system ..........41
6.17)
Drive
of vacuum
pump...
...................42
6.18)
Ignition
unit....
6.19) Generator
6.19.1.
47
6.20)
Check-circuit
for rectifier-regu1ator...............
....,....,,.,,.....47
6.20.1)
DC
output
..........47
6.20.2)
Circuit with
main
switch at battery
........48
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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)