Operator`s manual
ADJUSTMENT OF VALVE CLEARANCE
MODEL:
BID
8.0KW & 10.0 KW
II
CAUTION
II
Adjust the valve clearance when the engine is cold.
0.010 inches (0.25 rnrn)
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. Adjust the valve
clearances
at
IDC
(Top Dead Center) for each cylinder
when they are
on
their compression stroke (see below).
2.
Align the timing marks
on
the gear case and on the
crankshaft pulley as shown. In this position, the No.1
cylinder is
at
its top Timing Mark while dead center on
its compression stroke.
Check both intake and exhaust
valve clearances
of
the cylinder.
If
the valves have no
specified clearance, adjust
by
means
of
the adjusting
screws. Remember to align the timing marks properly;
if
not, the valve may be pushed up by the piston,
depending on position
of
the cam lobe.
3.
Next, the piston
of
No. 3 cylinder comes
IDC.
Turn
the crankshaft 240
0
clockwise from the above position,
aligning the timing mark
of
the crankshaft with that
of
the gear case. Then check and adjust the valve clearance.
4.
To check the
No.2
cylinders valve clearance, turn the
crankshaft another 240
0
clockwise, and then align the
Front
-
0
No
3
top
Timing
Mark
0 0
0 0
9
1
5
11
10
4
,
8
0 0
0
0
o Z
01
0 3
timing marks; check and adjust the valve clearance
in
a 3
Cylinder
Head
Bolt
Tightening
~quence
similar
manner.
Note: Retighten the cylinder head bolts before the valve clearance is adjusted. Note:
rnrn
size shown are
sockets size for holddown bolts. Rocker
Shaft Holddown Bolts: (14mm 3.4 kg-m) 24.5 ft-lbs.
BTD 8.0 KW and
10.0 KW
Bolts #4,5,6,7,8,9,10
&
II
(17 mm 11-12.5 kg-m)
83.2 -
90.4 ft-Ibs
Bolts #1,2,
& 3
(14 mm 6.5 - 8 kg-m)
47.0 - 57.9 ft-Ibs
WESTERBEKE GENERATORS
84