3.
FEATU
RES
I.
The cylinder and crankcase is a light weight one-piece aluminum diecasting. The dimensions are
as
small
as those of a 10-horsepower engine.
2.
The engine is powerful with a wide torque range from low speed to high.
3.
The vibration-free design with twin balancer shafts.
4.
A pointless electronic ignition system is adopted as standard, which makes the ignition system mainte-
nance-free.'
You
will no longer be troubled by worn contact points or faulty sparking from wrong ignition
timing.
5.
The engine employs a special cast iron cylinder liner, a forged steel crankshaft, main ball bearings at both
sides and forced spray lubrication by oil pump for prolonged durability. All this adds up to improved
durability.
4.
GENERAL
DESCRIPTION
of
ENG
NE CONSTRUCTIO
4-1
CYLINDER. CRANKCASE
The cylinder and crankcase
is
single piece aluminum
diecasting. The cylinder liner, made
of
special cast
iron,
is
molded into the aluminum casting. The in-
take and exhaust ports are located on one side of
the cylinder.
The crankcase has a fitting surface on the output
shaft side, where the main bearing cover is attached.
(See Fig.
1
.)
Fig.
1
-3-
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