ENGINE
The valve and its guide of the inlet are different from
those for the exhaust. Other parts, such as the
spring , spring retainers , valve spring collets , valve
stem seals are the same for both the inlet and the
exhaust. All contact or sliding surfaces are hardened
to increase wear resistance.
(1) Valve Spring Collet (4) Valve Stem Seal
(2) Valve Spring Retainer (5) Exhaust Va l v e
(3) Valve Spring (6) Inlet Va l v e
The crankshaft drives the oil pump and the idle gear
engaged fuel camshaft and camshaft. The timings
for opening and closing the valve are extremely
important to achieve effective air intake and
s u fficient gas exhaust. The appropriate timing can
be obtained by aligning the mark on the crankshaft
gear (6) with one the idle gear (5), idle gear with
camshaft gear, idle gear with injection pump gear,
when assembling.
(1) Injection Pump Gear (5) Idle Gear
(2) Fuel camshaft
(6) Crankshaft Gear
(3) Camshaft Gear
(7) Crankshaft
(4) Camshaft
The flywheel is installed on the rear end of the
crankshaft. Its inertia keeps the flywheel turning at a
constant speed, while the crankshaft tends to speed
up during the power stroke and to slow down during
other stokes. The flywheel has a ring gear (1), which
mesh with the drive pinion of the starter. The
flywheel has also marks “TC” and “FI” on its outer
rim. The mark TC shows the piston’s top dead
center and the mark FI shows the fuel injection
timing, when they are aligned with the mark of
window on the clutch housing.
(1) Ring gear
(2) Flywheel
(3) Crankshaft
I. INLET AND EXHAUST VALVES
J. TIMING GEARS
K. FLYWHEEL
