Cub Cadet T65 Series - Manual (Page 82)

T65 Series Vertical Shaft Engines
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9. Inspect the key, keyway, and tapered mating sur-
faces of the flywheel and crankshaft. See Figure
7.21.
NOTE: If the key is damaged it must be replaced. If
there is damage to the crankshaft key way,
the engine must be short blocked because
crankshafts are not available as a service
part.
10. On installation, confirm that the key is properly seated (the flat of the key parallel with the threaded section of
the crankshaft) in the key-way, and that the tapers are fully seated. Key or keyway failure may result from
improper seating.
IMPORTANT: The taper in flywheel and the on the crankshaft must be clean and dry. The flywheel is held in
place by the friction fit between the flywheel and the crankshaft, not the key. The key is only to
guide the flywheel to the proper position until it is torqued down.
11. Install the flywheel nut to a torque of 47 - 52 ft lbs (64 - 70 Nm).
12. Adjust the air gap by following the steps described in the previous section of this chapter.
13. Reassemble the engine.
14. Test run the engine before returning to service.
Figure 7.21
Key flat parallel to the threads
Taper
! CAUTION ! CAUTION
If the flywheel shows any signs of
physical damage such as cracks, bro-
ken vanes (if equipped), or a damaged
keyway, replace it. A damaged flywheel poses a
threat of a burst failure. Burst failures are extremely
hazardous to surrounding people and property.