Rotax 912 Series Service Manual

BRP-Rotax
Maintenance Manual
Effectivity 912/914 Series
Edition 1 / Rev. 0
72-00-00
page 75
May 01/2007
d02622
3.13) Cylinder and piston - removal
See Figs. 72-84 and 72-85.
◆ NOTE: Prior to removal, mark cylinders and pistons in pairs to ensure
correct coordination on re-assembly. The cylinders are all
identical in design. The piston pin center is offset from piston
center.
Move the piston to T.D.C.position and mark with an arrow pointing towards the
gearbox. When the piston is cleaned, the arrow (1) becomes visible. This arrow
faces towards the gearbox on all 4 cylinders and serves to ensure correct
assembly of the pistons with offset centers.
Carefully pull off the cylinder. Support the piston by hand to avoid damaging
piston and piston rings. Lift out the piston pin circlip (2) with a mono hook circlip
puller (3), part no. 976380, see 00-00-00 sec. 10.6.
Fig. 72-84
07708
--->
1
2
3

Rotax 912 Series Specifications

General

Redline	5800 rpm
TBO	2000 hours
Displacement	1211 cc
Bore	79.5 mm
Stroke	61 mm
Power Output	80 hp (59.6 kW)
Compression Ratio	9.0:1
Fuel Type	Avgas 100LL
Ignition System	Dual electronic ignition
Fuel System	Fuel Injected
Oil System	Dry sump
Engine Type	4-cylinder, horizontally opposed, 4-stroke