"CRUSADER
250," "250
CLIPPER"
AND
"CRUSADER
SPORTS"
run regularly and
is
very hard to start.
In
other cases
the engine may suddenly
"
eut out
"
without any warn-
ing. First see that the high tension lead has not become
disconnected
at
either end and
is
not worn
or
burnt
through, allowing the bare wire to touch some metal
part of the machine.
See also that the plug insulator
and high tension lead are not wet.
If
ail
the above
is
in order, remove the sparking plug
and hold it with the body touching the engine cylinder,
but with the terminal clear of the machine and connected
to the high tension lead.
Turn
the engine round by the
kick starter.
If
a good spark is obtained at the plug
points, the ignition
is
in order and the trouble lies else-
where.
If
no spark,
or
a very weak spark,
is
obtained,
remove the plug and hold the end of the high tension
wire about
l"
from a metal part of the machine and
rotate the engine.
If
a spark
is
obtained frorn the wire,
the fault lies with the sparking plug.
If
this
is
oily
or
sooty it can be taken apart and cleaned,
but
if
the points
are red and burnt the plug has been too hot and a new
one should be fitted.
The
gap between the plug points
should be
·018"
to
·025".
If
the plug is satisfactory, the trouble lies elsewhere.
See
that
the contact breaker points are clean and
that
they open and close properly. These should open to
·014"
to
·016".
A sticking rocker arm may be another cause of
failure, while faulty low tension leads, battery and other
connections may a
il
result
in
.
stoppage
or
poor running.
Ignition trouble can corne, of course, from a faulty
condenser or coi!.
Failure of the generator to charge the battery may
be due to a faulty rectifier
or
short circuits and a low
charge rate can be caused by the connections joining the
generator coils making contact with the inside of the
crankcase cover.
19
Other
Causes of Engine Stoppage.
Other possible
causes of an engine stoppage are: -
15
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