ENGINE
ADJUSTMENTS
11.0KW
BTD
&
12.5KW
BTD(A)
VALVE
CLEARANCE
ADJUSTMENT
Adjust the valve clearance when the engine is cold.
0.0098 inches (0.25 mm). Tighten the cylinder head bolts to
the specified torque and sequence shown below.
1. Pull off the air breather pipe from the rocker cover, and
take off the rocker cover bolts.
2. Adjust the valve clearances at
TDC (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
timing mark
on
the. crankshaft pulley are exactly aligned.
If
not, the valve will interfere with the piston because
of
improper cam positioning.
NOTE:
Retighten·the cylinder head bolts before the valve
clearance
is
adjusted.
11.0KW
BTD&
12.5KW
BTDA
BOLTS
5,6,7,8,9,10,11,12,13
&
14
17mm
(11.5
-12.5kg-m)
83.1-86.7
ft-lbs
soiTs
1
,2,3
& 4
14mm
(6.5-
8.0kg-m)
47.0-57.8
ft-lbs
12.5KW
BTD
BOLTS
5,6,7,8,9,10,11,12,13
&
14
22mm
(15
-16kg-m)
108.4-115.7
ft-lbs
BOLTS
1
,2,3
& 4
22mm
(11
-
12kg-m)
79.0-
86
ft-lbs
11.0KW
BTD
&
12.5KW
BTDA
Rocker
Shaft
Hold
!town
Bolts
14mm
(4.0
•
5.5kg-m)
28.9
•
39.8
ft·lbs
10mm
(0.8
-1.2kg-m)
5.8-8.7
ft·lbs
12.5KW
BTD
Rocker
Shaft
Holddown
Bolts
14mm
(4.0
-
5.5kg-m)
28.9
-
39.8
ft-lbs
10mm
(0.8
·1.2kg-m) 5.8-8.7
ft·lbs
NOTE:
MM
size shown are sockets size
for
holddown bolts.
0
0
0
1
5
lO
9
6
8
J
0
1
0
2
0
4
0
0
0
0
CYLINDER
HEAD
BOLT
liGHTENING
SEQUENCE
i
. I
0.25MM
--=-7·
(0.00981NCHES)
,
INTAKE
&
EXHAUST
I
VALVE
CLEARANCE
Westerbeke recommends .that these engine
adjustments
be
made
by
a.
qualified mechanic.
26
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