Camshaft
1. Check camshaft gear (A, Figure 130) for worn, cracked,
chipped, or missing teeth.
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2. Check camshaft lobes (B) for scratching, scoring, or
excessive wear.
3. Check MAG bearing journal (C) and PTO bearing journal
(D) for scratching or scoring.
4. Using an outside micrometer, measure the MAG bearing
journal and PTO bearing journal diameters. Replace the
camshaft if either measurement is 0.783in (19.897mm)
or less.
CRANKCASE AND CRANKCASE COVER
Governor Shaft and Seal - Disassembly
1. If equipped, remove C-clips (A, Figure 131) from top 2
grooves in governor shaft(B) and bottom groove within
the crankcase. Discard C-clips.
131
2. Remove flat washer(C)from crankcase boss.
3. Remove governorshaftfrom inside crankcase.
4. Using a small pick, remove oil seal(D)from crankcase
bore. Exercise caution to avoid scratching bore during
seal removal.
Governor Shaft and Seal - Assembly
1. Install new governor shaft oil seal (D, Figure 131). Press
seal into shaft bore until seal edge is level with bore lip.
2. From inside the crankcase, install the governor shaft (B)
up through the crankcase shaft bore. Make sure to avoid
damaging the new oil seal.Make sure that the paddle of
the governor shaft is orientated as pictured in Figure 131.
3. Install the flat washer (C)over the governor shaft and
onto the crankcase boss.
4. If equipped, install new C-clips onto the top 2 grooves of
the governor shaft and on the bottom groove within the
crankcase.
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