EH12, EH17, EH25 - Small Engine Discount

4-6 CAMSHAFT
‘I’he camshaft for the D-type engine is made of
special cast iron and camshaft gears are casted
togcther in one piece.
Both sides of the shaft fit into the plane bearings
on the crankcase and main bearing cover.
‘I’hc camshaft for the B-type engine is made of
forged carbon stcel and also functions as PTO
shaft.
The cam gear is press fitted on the shaft and the
ball bearings arc employed on both sides for supporting
the shaft. (See Fig. 4-6.)
I
I
B TYPE
I
Fig. 4-6
D li’PE
4-7 VALVE ARRANGEMENT
‘I’he intake v;llve is located on flywheel side of the
cylinder hcad.
‘I’hc hard alloy valvc seats are molded in the
cylinder head and stcllite is fused lo the exhaust
valvc f;KC.
‘I’hc cylindcr bafflc leads cooling air to the exhaust
valvc arca for the optimum cooling. (See Fig. 4-7.)
h.
Fig. 4-7
4-8 CYLINDER HEAD
‘I’hc cylindcr hcad is a11 aluminurn die casting
which utilizcs wcdgc type combustion chamber for
thc highcst combusl.ion cli‘icicncy. (See Fig. 4-13,)
Fig. 4-8
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