Inlet And Exhaust Valves; Flywheel - Westerbeke Universal M-50 Operator's Manual

INLET AND EXHAUST VALVES
The inlet and exhaust valves and their guides are different from each other. Other parts, such as
valve springs, valve spring retainers, valve spring collets, valve stem seals, and valve caps are the
same for both the inlet and exhaust valves. All contact or sliding parts are quenched and tempered
to resist wear.
1. Valve cap
2. Valve spring Retainer
3. Valve spring Collets
4. Valve spring
5. Valve stem seal
6. Valve guide
7. Inlet valve
8. Exhaust valve
FLYWHEEL
(7)
Intake and exhaust valve
(4)
~_-(5)
(6)
(8)
Flywheel is connected with the crankshaft. Storing explosive force by each cylinder as the force of
inertia, the flywheel functions to rotate the crankshaft smoothly.
On the circumference of the flywheel are stamped marks for fuel injection timing and top dead
center. The flywheel and crankshaft can be fixed to each other at a certain point according to the
arrangement of flywheel mounting bolt hole.
2TC
2 Fl...... 1 FI
12 1.27 rad.
173~)ra~d'
(73")
1 TC
1.27 rad. 1.27 rad.
(73°) (73")
\~
1.19 rad.
(68°)
11TC . .... Mark for top dead center of 1st piston
1/FI ...... Mark for fuel injection of 1st piston
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