Cub Cadet MTD P90 Series - Manual (Page 64)

P90 Series Vertical Shaft Engines
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5. Slide the stator housing off of the starter.
6. Pull the rotor out of the stator housing.
NOTE: The rotor will be held to the stator by strong
magnets.
7. Inspect the rotor for signs of wear or damage.
8. If the rotor is damaged, it may not be economically
feasible to rebuild the starter.
9. Test the rotor:
9a. Set the DMM to measure resistance (
Ω scale).
9b. Measure the resistance across all of the com-
mutator plates.
• The reading should be less than 0.3
Ω.
9c. Test for continuity between the commutator
and the rotor shaft.
• The reading should read open line, over limit or
infinity depending on the meter used.
NOTE: If there is continuity between the commuta-
tor and the rotor shaft, the rotor is shorted. If
the rotor is shorted it may not be economi-
cally feasible to rebuild the starter.
10. Remove the negative brushes by removing the two
screws, indicated by the arrows in Figure 6.9., that
secure them to the end cap using a #2 phillips
screwdriver.
11. Remove the brush holder and springs.
Figure 6.7
Rotor
Commutator
Figure 6.8
Figure 6.9