Rotax 912 i series Service Manual

BRP-Rotax
MAINTENANCE MANUAL LINE
CHECKING OF THE OVERLOAD CLUTCH
General note In the event of lead deposits and/or if slipping is suspected, it will be necessary to check
the overload clutch..
NOTE
Slipping of overload clutch is apparent if at engine speed rise, the propeller speed
does not increase at the same rate.
NOTE
The engine should be run for a short time prior to the test, otherwise there is the
risk of the clutch “drying out“, resulting in a higher torque.
Step
Procedure
1
Remove the propeller as per manufacturers instruction.
2
Lock the crankshaft.
See Chapter 12-20-00 section Locking/loosen of the crankshaft.
3
Install a torque multiplier (or use a extension bar) of respective specification
(1000 Nm /738 ft.lb.) on the propeller flange.
NOTE
Because of difficult measurement of the slipping torque the break-
away torque is measured.
ATTENTION
Danger of damage to the engine suspension! Depending on the engine installa-
tion (e.g. in the case of extremely lightweight engine suspension), the gearbox
must be removed and the test carried out on a suitable mounting attachment.
05–50–00
Page 12
September 01/2018
Effectivity: 912 i Series
Edition 2/Rev. 0

Rotax 912 i series Specifications

General

Number of Cylinders	4
Max Power	100 hp (73.5 kW)
Max Power Output RPM	5800 rpm
Ignition System	Dual electronic ignition
Oil System	Dry sump, forced lubrication with separate oil tank
Reduction Gear Ratio	2.43:1
TBO	2000 hours
Engine Type	4-stroke, horizontally opposed
Displacement	1352 cm³
Bore x Stroke	84 mm x 61 mm
Max Torque	128 Nm
Fuel Type	Avgas 100LL or unleaded automotive gasoline
Fuel System	Electronic fuel injection
Cooling System	Liquid/air-cooled