Operator`s manual
ADmSTMENT
OF VALVE CLEARANCE
MODEL:
BID
11.0 KW &
BID
(A) 12.5 KW
II
CAUTION
n
Adjust the valve clearance when the engine is cold.
0.010 inches (0.25 mm)
Tighten the cylinder head bolts to the specified torque.
1.
Pull off the air breather pipe from the rocker cover,
and take off the rocker cover bolts.
2. Adjust the valve clearances at
IDC
(Top Dead
Center) for each cylinder when they are on their
compression stroke.
3.
Make sure that the timing mark
on
the gear case and
the timing mark
on
the crankshaft pulley are exactly
aligned;
if
not, the valve will interfere with the piston
because
of
improper cam positioning. (Refer to page
71
another illustration showing crankshaft timing marks.)
NOTE: Retighten the cylinder head bolts before the valve
clearance is adjusted.
BID
II.OKW &
BIDA
12.5KW
BOLTS 5,6,7,8,9,10,11,12,13&14
(I7MM
11.5 - 12.5 kg/m)
83.1
- 86.7 ft-Ibs
BOLTS 1,2,3, & 4
(I4MM
6.5 - 8.0 kg/m)
47.0 - 57.8 ft-Ibs
NOTE: mm size shown are socket size for holddown bolts
BTD
II.OKW &
BIDA
12.5 KW
Rocker Shaft Holddown Bolts
14mm
(4.0-5.5 kg/m) 28.9 - 39.8 ft-Ibs
10mm (0.8-1.2 kg/m) 5.8 - 8.7 ft-Ibs
85
~
Front
b
o
I
13
L
g
3
0
Nos,
1
and
4
piston
T.O.C.
mark
I
Timing
Mark
0
0
7
5
9
6
0
1
0
0
2
0
Injection timing
{I.T.)
mark
0
10
8
0
4
0
0
12
14
0
Cylinder Head
Bolts
Tightening Sequence
BID
12.5KW
BOLTS 5,6,7,8,9,10,11,12,13 &14
(22MM 15-16 kg/m)
108.4
- 115.7 ft-Ibs
BOLTS 1,2,3, & 4
(22MM
11-12
kg/m)
79
-
86
ft-Ibs
BID
12.5KW
Rocker Shaft Holddown Bolts
14mm (4.0-5.5 kg/m)28.9-39.8ft-lbs
10mm
(0.8-1.2 kg/m) 5.8 - 8.7 ft-Ibs
Revised
August 1994
WESTERBEKE
GENERATORS
I