"CRUSADER
250," "250
CLIPPER"
AND
"CRUSADER
SPORTS"
PUSHROD
CUP
Fig.
3.-Valve
Oearance
Adjustment.
the push rod cup (top hexagon) to the right
to
take
up
clearance
or
to the left to give more clearance,
at
the same
time holding the push
rod
top end. Finally, Iock
up
the
Iocknut against the push
rod
end
and
check the clearance
after finally tightening the locknut.
Owing
to the initial bedding down of the wearing
surfaces, the valve clearances on new machines may
require adjustment after the first few hundred miles have
been run.
29 Engine Bearings. The crankshaft runs
on
a large-
diameter ball bearing
at
the driving end and a roller
bearing at the generator end.
The
ball bearing
provides positive end location for the shaft and, provid-
ing that the driving sprocket nut is securely tightened,
there will be no apparent end float.
The
light alloy
connecting rod has a split big end with renewable
white-metal lined steel shells. Sorne
side float and a
perceptible amount of
"
shake "
may be present
in
the
big-end bearing but if, after a long period of use, definite
20
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