Rotax 912 i Series Maintenance Manual page 203

INSTALLATION
CYLINDER HEAD INSTALLATION
Preparation
- Clean all parts carefully.
- Lightly grease or lubricate O-rings and gas-
kets.
NOTICE
WARNUNG
To ensure constant tightening torque, lightly
lubricate the flat surfaces of the collar cap nuts.
NOTICE
WARNUNG
Place the cylinder at TDC. The valves then over-
lap. This prevents a situation in which a valve is
open and the cylinder head lifts off again from
the cylinder head gasket face. Otherwise the oil
return tube O-rings can be damaged.
Step
1 Install the corresponding push-rods in the
oil return tubes.
2 Lubricate the push-rod heads with KLUE-
BER ISOFLEX TOPAS.
3 Install the lubricated 16x5 O-ring on the oil
return tube.
Fig. 37
1. Push-rods
3. 16x5 O-ring
Effectivity: 912 i Series
Edition 1/Rev. 0
BRP-Powertrain
MAINTENANCE MANUAL
Procedure
2. Oil return tubes
The intake manifold with the fuel rail
NOTE:
must be raised slightly for part re-
pairs.
Step
4 Place on the cylinder head until the
O-rings of the two oil return tubes rest in
the crankcase.
5 Raise the cylinder until the centring collar
of the cylinder engages in the cylinder
head release.
Fig. 38
1. Cylinder head assy.
3. Oil return tube
5. Centring collar of cylinder
NOTICE
WARNUNG
O-rings must be pressed into the crankcase at
the same time.
Step
6 Install the cylinder head and the cylinder
together.
7 Fasten the cylinders finger-tight and diag-
onally at first with 2 M8 collar cap nuts and
2 M8 hex. nuts.
If necessary, repeat the process for
NOTE:
the other cylinder heads.
Procedure
2. O-ring
4. Crankcase
Procedure
72-30-00
Page 25
July 01/2012