Bench Testing The Electric Starter - MTD P90 series Shop Manual

P90 Series Vertical Shaft Engines

Bench testing the electric starter

IMPORTANT: Always bench test an electric starter
before condemning it.
To bench test an electric starter:
1. Remove the starter by following the procedures
described in the previous section of this chapter.
2. Mount the starter in a vise.
NOTE: If the vise is tightened too tight, the starter
can be crushed.
3. Attach the negative lead of a 12 volt power source
to the starter housing.
NOTE: A battery charger set to the 12 volt/ 40 amp
range or a fully charged battery and a pair of
jumper cables can be used.
4. Connect the positive lead to the cable stud on the
starter.
• The starter should spin fast enough for the ben-
dix gear to slide out fully. If not, rebuild the
starter.
• If the starter does not spin, repair or replace the
starter.
56
Figure 6.3
Positive lead
Negative lead