Rotax MMH-912 Series Maintenance Manual page 82

Carry out a visual inspection of the sealing surfaces.
Clean oil duct (10) with compressed air and check for free passage. Measure
the bearing bore Ø32 (1.26") mm of the bearing bushing (11) (dimension
(IH01)) for the crankshaft bearing (dimension (CS05)) and determine the
clearance. See 72-00-00 sec. 4.
The bearing bushing (11) can not be replaced, as the internal bore and the
lubricating bore (10) are machined after pressing in the bushing, if the bearing
bushing (11) is worn, the complete ignition cover with pressed-in and machined
bushing must be replaced.
Check the shaft seal (13) 32x52x7 for the crankshaft, if necessary, press new
shaft seal into the block with an insertion jig, part no. 877270.
Check whether oil or water emerge from the outside of the leakage bore (14).
Check the rotary seal (15) for the water pump sealing. If liquid is leaking, replace
the rotary seal and the shaft seal (16).
Carry out a visual inspection of the bearing (17) for the electric starter.
NOTE:
◆
Effectivity 912/914 Series
Edition 1 / Rev. 3
BRP-Powertrain
Maintenance Manual
00381
Fig. 72-8 item 18 is the drive shaft for the mechanical rev
counter.
Fig. 72-6
3
3
00382
4
2
72-00-00
page 12
October 01/2010