GOVERNORS
Speed Setting
Complete installation of remaining governor linkages and
carburetor and then adjust governor shaft and lever.
NOTE: If governor bushing is replaced it should be
finished reamed to .2435-.2410 (6.18-6.12 mm) for 1/4"
(6.35 mm) or with 19058 reamer for 3/16" (4.76 mm)
governor shaft.
Adjustment
Loosen screw holding governor lever to governor shaft.
Place throttle in high speed position. While holding
throttle in this position and with a screwdriver turn
governor shaft clockwise as far as it will go. Tighten
screw holding governor lever to governor shaft to 35-45
in. lbs. (.4-.52 mkp or 4.0-5.0 N•m) torque. See Fig. 20.
Before starting engine, manually move governor linkage
to check for any binding.
Fig. 20. Adjust Governor
MECHANICAL GOVERNOR—
ADJUSTING TOP NO LOAD SPEED
ALUMINUM MODELS 100200, 130200, 170000,
190000, 220000, 250000 (Except 253400)
Fig. 21. Setting Top No Load Speed
1.
Set control lever to maximum speed position, with
engine running. See Fig. 20.
2.
Use tool 19229 to bend spring anchor tang to get
desired top speed. See Fig. 21. To make own tool,
see Fig. 22.
Fig. 22. Tang Bending Tool
To adjust governed idle refer to Section 4, Governor
Controls and Carburetor Linkages.
ADJUSTING MECHANICAL GOVERNOR
MODEL SERIES 253400
On Model Series 253400, governor adjustments are the
same except top governed speed. To set top governed
speed, turn screw "A" in to decrease or out to increase
R.P.M. Refer to Engine Sales Manual, Note column for
recommended governed R.P.M. See Fig. 23.
Fig. 23
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