Rotax 915 i A series Maintenance Manual page 218

Figure 8.43
Cylinder head assy.
1
3 Oil return tube
Centring collar of
5
cylinder
ATTENTION
O-rings must be seated into the crankcase at
the same time as cylinder head is tightened on-
to cylinder.
Procedure
Step
6
Clean and degrease all threads of studs.
NOTE
M8 collar cap and M8 collar nuts also must be
clean and free from residues
Step Procedure
7 Squeeze the cylinder head and the cylin-
der together by hand and push towards
crankcase.
8 Lubricate the contact area for the M8 col-
lar cap nuts with grease.
72–30–00
Page 32
August 01 2018
BRP-Rotax
MAINTENANCE MANUAL HEAVY
O-ring
2
4
Crankcase
NOTE
No grease for M8 collar nuts contact areas!
Step Procedure
9 Hand-tighten 2 M8 collar cap nuts and 2
M8 collar nuts diagonally (maximum 5
Nm/44 in.lb), until cylinder head rests on
cylinder.
NOTE
If necessary, repeat the process for the other
cylinder heads.
Figure 8.44
1 Hex. nut M8
2 Collar cap nut
Effectivity: 915 i A Series
Edition 0/Rev. 0