ONAN
CHOKE
This choke uses a heating element and a heat
sensitive bimetal spring to open the choke plate. The
choke plate closes according to ambient
temperature.
If adjustment is required, use the following instruc-
tions.
Choke bimetal spring must be at ambient
temperature. Allow engine to cool at least one hour,
before setting. Adjust choke by turning the choke
body, which engages a link connected to a bimetal
choke spring. Remove flame arrestor and adapter to
exposethecarburetorthroat. Loosen thescrew which
secures the choke" body,. Rotate choke body
clockwise to increase choke and counterclockwise to
decrease choke action (leaner mixture). At room
temperature (70° F) the choke valve should be almost
wide open.
Note that the direction marking "CHOKE " as
appears cast on the body of some carburetors is
correct for manually choked sets but is wrong for
electric choked sets due to the choke valve arrange-
ment. Choking position of the weight lever is vertical,
on the shaft of electrically choked sets. Choking
position of the lever is horizontal on manually choked
sets.
Gas Fuel: Normal choke setting is fully closed with
engine not running, turn adjusting screw (Figure. 1,t
;
)
in for less choking, out for more choking.
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