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SECTION 6A
FUEL SYSTEMS AND GOVERNORS
OPTIONAL AUTOMATIC CHOKE
AND SHUTDOWN CONTROL
in clockwise direction for richer setting or counter-
clockwise direction for leaner setting. Tighten the cov-
er retainer screws.
Sore Magnum twins on may be equipped with an
optional Thermo-Electric Automatic Choke, and with a
Fuel Shutdown Control.
Automatic Choke Function
The choke is an integral part of tne carburetor. The
choke will close automatically from ambient air. Upon
starting, the engine vacuum will partially open the
choke.
The bi-metal spring in the choke is electrically
connected to the rectifier-regulator and the current
flowing through the bi-metal spring will heat to a point
that the choke will open fully.
Automatic Choke Adjustment
The choke unit (Figure 6A-22) is set at the factory for
average conditions. To readjust for local conditions,
loosen the cover retaining screws and shift the cover
Problem
Automatic Choke Service Guide
Causes
Faulty lead to choke.
Faulty iead to ground.
Figure 6A-22. Automatic Choke.
1. Check for secure lead connections.
2.
. Check for secure lead connections.
Solutions
Make continually check on lead.
Replace if no continuity.
Choke Won't Close
2. Make continuity check on lead.
When Cranking
Replace if no continuity.
1. Poor adjustment.
1. Adjust choke.
2. Choke shaft binds - vamish.
2. Repair with kit or replace choke.
3. Wash with carburetor cleaner.
Choke Will Not Fully Open | 1. Poor adjustment.
1. Adjust choke.
2. Fautty choke.
2. Repair with kit or replace choke.
6A.16
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