Topic: Re: WD starter switch is sparking
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The welding of the contacts could have blown the solder out of the armature, causing one or more of the brush contacts to rise up, and jam against the brushes. Remove starter, listen and feel if the drive retracts, as you remove. If it feels like something moved, as starter was removed, pull the brush inspection band,and look at the armature, to see if any contacts have risen. If it looks good, hook jumper cables to a good battery, and try hitting the switch, with the starter laying on the ground. The drive should pop out and spin freely. If starter passes this test, stick a big screwdriver in the starter hole, and pry on the ring gear, inspecting the teeth, and seeing if the motor is not locked up. Flywheel needs to rotate freely 360 degrees.
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