ENGINE
ADJUSTMENTS
SPARK
PLUGS
The
spark plugs should
be
cleaned and regapped after the
first 50
hour
break-in period, then inspected every 250 hours
thereafter and replaced
as
needed.
AWARNING:
Do
not
remove
the
spark
plugs
while
the
engine
is
hot.
Allow
the
engine
to
cool
before
removing
them.
Spark
plug
gap:
0.031 - :!: 0.0002
in.
(0.8 - 0.05
mm).
Spark
plug
torque:
10
-15
lb-ft
(1.5 - 2.31
kg-m).
NOTE:
Loctite Anti-Seize applied to the threaded portion
of
the
spark plugs
wilt
retard
corrosion,
making future
removal
of
the
spark plugs
easier.
GAP
INSPECT
FOR
WEAR
&
CARBON
INSPECTING
THE
SPARK
PLUGS
INSPECT
FOR
DAMAGE
,______CHECK
FOR
DETERIORATION
AND
DAMAGE
HIGH
TENSION
CORDS
(IGNITION
WIRES}
Check the ignition wires every
500
operating hours
as
engine
compartment heat can deteriorate the wires.
Check the resistance
of
each wire. Do not pull on the wire
because the wire connection inside the cap may become
seperated or the insulator may be damaged. When removing
the wires from the spark plugs, grasp and twist the moulded
cap, then pull the cap off the spark plug.
The
resistance value
is
410
ohm
per
inch
of
wire.
CHECKING
RESISTANCE
CHOKE
SOLENOID
The choke solenoid is a 12 volt
DC
operated unit that func-
tions to close the
choke·plate in the carburetor when the ON
switch is depressed during engine start-up.
The choke solenoid de-energises once the engine starts and
the
ON switch is released.
Some
unstable running may
be
present when the engine starts cold
but
should smooth out
as
the engine reaches operating temperature.
Keep this solenoid dry and periodically lubricate the linkage
between the solenoid and the choke lever.
CARBURETOR
Engines & Generators
29
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