Specifications

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18
NOTE: SPECIFICATION TABLES BEGIN ON PAGE 28 OF THIS SECTION.
Cast Iron Model Series
230000, 240000, 300000, 320000 (Fig. 37)
Disassemble
1. Remove engine base.
2. Loosen governor lever bolt and nut.
3. Remove governor lever from governor crank
assembly.
4. Remove cotter pin and washer from governor
crank (3).
5. Remove any paint or burrs from governor crank.
6. Remove governor crank.
NOTE:Current production engines have a spacer
(2) on the governor crank (3). Earlier
production engines have a long bushing
without spacer.
7. Slide governor gear assembly off governor shaft.
Fig. 37
1
2
4
3
Replace Governor Shaft Bushing
1. Press old bushing (1) out of cylinder.
2. Press new bushing into cylinder until bushing is
flush with outside surface of cylinder.
3. Ream new bushing with Tool #19333, Finish
Reamer, using suitable lubricant.
Assemble Governor
1. Assemble governor gear (4) and cup assembly on
governor shaft in cylinder.
2. Slide governor crank (and spacer, when used)
through bushing from inside cylinder, Fig. 37.
3. Install lever, governor spring, and links.
Adjust Top No Load Speed
NOTE:Consult Engine Sales Manual, MS-4052 or
MS-6225, Service Engine Sales Manual
Microfiche under note column, or MAXI-
MUM RPM TABLE at the end of each
engine manual for TOP NO LOAD RPM.
Fixed Speed Operation
1. Loosen lower stop nut (2).
2. Adjust top stop nut (1) to obtain specified TOP NO
LOAD RPM.
3. After speed is set, tighten lower stop nut, Fig. 38.
Idle speed screw (3).
Fig. 38
1
2
3
4
5
6
1
2
3