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PROBLEM
CAUSES
SOLUTIONS
Choke will not fully
1.
Choke spring not properly ad-
1.
Remove spring retainer and
open.
justed.
with choke wide open windup
2.
Choke shaft fails to move
spring 1 /2 turn.
freely.
2.
Install new shaft assembly re-
3.
Faulty choke adjustment.
pair kit.
3.
Adjust choke.*
Choke shaft
1.
Incorrect ignition timing.
1 . Time engine as specified and
breaks or plate
install new shaft assembly re-
comes out.
2.
Too much compression.
pair kit.
2.
Adjust ACR to specification
and install new shaft assembly
repair kit.
Choke won't close
1.
Faulty lead wires or terminals.
1 . Change lead wires or replace
choke.*
when cranking.
2.
Air cleaner gasket interference
with choke shaft lever (4.5
2.
Reposition flat of gasket to
KW only).
provide clearance for choke
shaft lever.
3.
Open circuit in solenoid wiring.
4.
Faulty Decision Maker or
ground in Decision Maker.
5.
Choke lever lacks sufficient
travel or smooth movement.
*Choke Replacement And Adjustment
1 . Position the choke unit on the two mounting
screws so that it is slightly loose.
2.
Hold the choke plate in the wide open position.
3.
Rotate the choke unit clockwise on the carbu-
retor (viewed from the choke side) with a
slight pressure until it can no longer be ro-
tated.
4.
While holding the choke unit in the above posi-
tion, tighten the two mounting screws.
NOTE: With engine not running and before any
cranking, the choke plate will be closed 5° to 1
oo
at a temperature of about 75
o
F. As the tempera-
6.22
3.
Check continuity with ohmme-
ter between the two solenoid
terminals on the choke unit.
Replace choke if open circuit.
4.
Replace lead to Decision
Maker with a jumper wire to
ground. If choke functions
properly, replace Decision
Maker.
5.
Manually move the choke
lever until the choke plate is
fully closed. Replace the
choke unit if it does not move
freely.*
ture decreases the choke plate will close even
more.
5.
Check choke function by removing the spark
plug lead and cranking the engine. The choke
plate should close a minimum of 45° at tem-
peratures above 75° F. The plate will close
more at lower temperatures.
NOTE: During cranking, the choke will remain
closed only 5 to 10 seconds, as choke closing
time is controlled by the Decision Maker.
Choke Shaft Spring Adjustment
1. To adjust the choke spring, hold the plate in
the wide open position. Windup the spring 1/2
turn and then place the straight end of the
spring through the hole in the shaft.
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