Robin America EX30, Service Manual

Page: 33 / 78

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(8) CYLINDER HEAD
Inspect and repair any scratches on mounting surface and replace head gasket to new one before installing.
Cylinder head bolts
Tightening Torque
Remarks
1
st
STEP
1
2
3
4
5
2 nd STEP
1
2
3
4
M8
×
68mm
fl ange bolt : 4 pcs. 17.0 - 19.0 N
●
m
(170 - 190 kgf
●
cm)
(12.3 - 13.7 ft
●
lb.)
25.0 - 27.0 N
●
m
(250 - 270 kgf
●
cm)
(18.1 - 19.5 ft
●
lb.)
Re-use
28. 0 - 30.0 N
●
m
(280 - 300 kgf
●
cm)
(20.3 - 21.7 ft
●
lb.)
When replace to new cylinder head
and fl ange bolts
M8
×
33mm
fl ange bolt : 1 pcs.
- -
Tighten the cylinder head bolts in diagonal order.
(1) Re-use (Oil the screw thread)
● Tighten all bolts (5pcs) by 18
±
1 N
●
m primary,
and then tighten longer ones (M8 × 68mm fl ange
bolt: 4pcs) by 26 ± 1 N
●
m.
(2) When replace to new cylinder head and flange
bolts (Oil the screw thread)
● Tighten all bolts (5pcs) by 18±1 N
●
m primary, and
then tighten longer ones (M8×68mm fl ange bolt:
4pcs) by 29±1 N
●
m.
(9) SETTING THE TIMING CHAIN
(a) Align the timing mark on the crankshaft sprocket with the mark plate of the timing chain.
(b) Align the timing mark on the crankshaft sprocket with the mark plate of the opposite end of the timing chain.
Number of oval steel link : 100
MARK PLATE
MARK PLATE
ROLL PIN
TIMING MARK
TIMING MARK
CHAIN GUIDE FITTING POSITION
The mark plate does
not have a camshaft
side or crankshaft
sprocket side.
CAMSHAFT SPROCKET
CRANKSHAFT SPROCKET
M8 x 33
BOLT : 1 pc.
PIPE KNOCK
GASKET
CYLINDER HEAD
M8 x 68
BOLT : 4 pcs.