Rotax 912 Series Service Manual

BRP-Rotax
Maintenance Manual
72-00-00
page 88
May 01/2007
Effectivity 912/914 Series
Edition 1 / Rev. 0
d02622
■ CAUTION: Always use new mono hook circlips! Used retaining
rings or retaining rings which have already been fitted
have too little tangential tension, can twist and thus
wear the groove in the piston.
Fit piston pin circlip with installation tool, part no. 877802. To do so,
press the mono hook circlip (11) into the groove (14) of the mounting
sleeve (13) and push guide punch (12) into the mounting sleeve. Slide
mounting sleeve onto the installation tool.
■ CAUTION : The position of the mono hook circlips is dictated by the
recess on the piston. When assembled, the open side
of the mono hook circlip must be positioned opposite
the piston crown. See Fig. 72-100.
Push installation tool (15) into the positioning gauge and press the ring
towards the front as far as the stop. Now position the complete
installation tool (15) on the piston. Support piston with hand and exert
strong pressure on the installation tool to push the mono hook circlip
(11) into the groove (16) of the piston. Apply same procedure on the
opposite side of the piston.
◆ NOTE: If an additional piston (17) is fitted for hookless circlips,
the mono hook circlip must be reworked as described
in SI-21-1997,“Introduction of the mono hook circlip“,
latest issue. See Fig. 72-105.
04706
Fig. 72-103
12
13
11
14
15

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