Installation manual
ENGINE
ADJUSTMENTS
NOTE:
WESTERBEKE recommends that the following engine adjust-
ments be performed by a competent engine mechanic. The information
below is provided to assist the mechanic.
VALVE
CLEARANCE
ADJUSTMENT
Make the following adjustments when the engine is cold.
1.
Remove the cylinder head cover.
2. Prior to checking valve clearances, re-torque the cylinder
head hold down bolts. This is done by by slightly
loosening the bolt and then
re-ti~htening
the bolt to the
specified torque in the sequence
shown below.
Tightening
Torque
65
± 4 lb-fl
(88
± 5
Nm)
FOUR
CYLINDER
FRONT
THREE
CYLINDER
3. Find top dead center compression position for No.1
piston by using the procedure that follows:
(a) Remove the glow plugs from the engine to ease the rota-
tion
of
the crankshaft manually to position the various
cylinders pistons at TDC (Top Dead Center.
TOC
(TOP
DEAD
CENTER)
\
\\
\
ROTATION
EARLY
MODELS
(b) Rotate the crankshaft to position
#1
cylinder piston at
TDC. The TDC mark on the crank pulley should align
with the timing mark on the gear case. Adjust the valves
for cylinder #1.
(c) Rotate the crankshaft to position the next cylinder in the
engines firing order at TDC
of
its compression stroke.
Adjust the valves for that cylinder.
(d) Rotate the crankshaft to position the next cylinder in the
engines firing order at TDC. Adjust the cylinders valves
and repeat this procedure until all the cylinder valves are
adjusted.
4. Loosen the lock nut for the adjusting screw. With a feeler
gauge inserted between the rocker arm and valve cap,
adjust the valve clearance by turning the adjusting screw.
Make certain to adjust all the valves.
5. Install the cylinder head cover.
0.25mm
(0.0098
INCHES)
INTAKE
&
EXHAUST
Head
Cover
Bolt
Torque
2 - 3 fl-lb
(0.3
-
0.45
m-kg)
FIRING
ORDER:
3
CYLINDER:
1-3-2
INJECTION
TIMING
MARKS
(7)
4
CYLINDER:
1-3-4-2
21•- 20•-19•- 18"-17"-16"
TDC
\
TDC
(TOP
DEAD
CENTER)~
"---
ROTATION
CURRENT
MODELS
1....-IWESIERBEICE
l Engines & Generators
33