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Timing
B-SERIES, C-SERIES, AND
0-160
Ignition timing on the B, C, and D-160 models is
con-
trolled by the point gap setting.
Refer to Points and
Condenser.
0-200
The ignition timing should be checked each time the
breaker point gap is altered.
To check the ignition timing connect an automotive
type timing light to the high tension lead of the left
spark plug.
Consult the manufacturer's instruction for
exact connections of the particular type of timing light
used.
Rotate the engine until the "SP" mark is observed in
the timing sight hole; using a piece of chalk, mark the
line for easier reading.
Fig.
3-22
Timing the
0-200
Start the engine and run at 1/2 throttle or above.
Aim the timing light into the sight hole; the light should
flash just as the "SP" mark is centered in the hole. If
the light flashes before the mark is centered, the timing
is excessively
advanced.
If the light flashes after the
mark is centered, the timing is excessively retarded.
To adjust, loosen (DO NOT REMOVE) governor
flange mounting capscrews and rotate the governor until
the timing mark is centered exactly in the sight hole.
Retighten flange mounting screws after exact timing is
achieved.
3-7
SECTION ::
Fig. 3-23 Governor Flange Mounting Screws
Carburetor Adjustment
Carburetors are adjusted in the factory and should nott
have to be reset.
If however, one of the following con-
ditions is noted, the carburetor should be readjusted im-
mediately as continued operation with incorrect setting cam
lead to fouled spark plugs, overheating, excessive valve
wear, or other problems. If black exhaust smoke is noted"
check the air cleaner first - an "overrich" mixture is usu-
ally caused by a poorly serviced, clogged air cleaner element"
not an improperly adjusted carburetor.
CONDITION
A. Black, sooty exhaust smoke, engine sluggish.
B. Engine m isses and backfires at high speed.
C. Engine starts, sputters, and dies under cold weather
starting.
D. Engine runs rough or stalls at idle speed.
POSSIBLE CAUSE/PROBABLE REMEDY
A. Mixture too rich - readjust main fuel needle.
B. Mixture too lean - readjust main fuel needle.
C. Idle speed too low or improper idle adjustment -
readjust speed, then idle fuel needle if needed.
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