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Old 04-28-2016, 10:59 AM
Mike McKown Mike McKown is offline
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Join Date: Jul 2012
Location: Indiana
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Quote:
Originally Posted by ol'George View Post
The spring keeps the gear from vibrating back into the ring gear causing a noise/wear.
The helix on the inside of the pinion gear is what retracts the pinion when the engine is started.
The spring keeps it retracted.
I would have thought that's what the spring would be for but that spring on this starter design doesn't come in contact with the pinion gear even with the gear fully extended. The spring is nested on a steel sleeve that is pressed inside that hub.

It only touches the hub on the end of the armature shaft that the roll pin goes through. Maybe this is the answer:

http://usedlawntractorparts.com/images/691564.jpg

This starter is like one that I have except the one in question here doesn't have the cage on it that touches the pinion and pushes on the spring. So, mine is missing a part that doesn't show in the Parts Tree diagram. I have replaced several pinions in Vanguards in the last couple of years and don't remember seeing that cage on the starter drive.

That makes sense though. Thanks.
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