Rotax 912 Series Maintenance Manual page 117

10
e
00312
17
16
Effectivity: 912 Series
AIRCRAFT ENGINES
MAINTENANCE MANUAL II
11
12
9
Attach cylinder aligning tool I, to intake flange of cylinder heads P by 4
screws O M6x25. Align cylinder heads, thus warranting a plane support
for intake manifold. Fit collar cap nut and collar nut { along with washer
} and tighten cylinder heads crosswise to 22 Nm (195 in.lb). Remove 4
screws O and cylinder aligning tool.
Lubricate all moving parts in rocker arm compartment. Place O-ring q
105x2,5 and O-ring w 6,4x1,8 on valve cover e, put cover in position and
tighten Allen screw r M6x30 along with washer t to 10 Nm (90 in.lb).
Between the outside shape of the valve covers a gap of at least 0,2 mm has
to remain. The valve covers must not touch each other.
CAUTION: Do not ever change the length of valve cover screw!
Check whether threads are damaged. If this screw is
loose or worn or if the valve cover is leaking, the oil
13
return to the oil tank by "blow-by gas" will not or not
sufficiently function.
Screw in resistance spark plugs and tighten to 20 Nm
(180 in.lb). Fit spark plug connectors according to cod-
ing sleeves on spark plugs, see para 13.4.11.
14
fig. 195
04713
NOTE: Proceed as per Wiring Diagram.
10
8
fig. 194
page 117
Initial issue, Jan. 01/2002