Author Topic: Oil seals on Stihl MS660 keep going bad.  (Read 201 times)

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Offline Cut4fun .

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Re: Oil seals on Stihl MS660 keep going bad.
« on: December 30, 2019, 07:43:56 am »
Have you checked impulse line and replaced if old?

Had a 66 come in pretty much sounded like this and was just impulse line.

Have you checked your crank bearings to make sure keepers on both sides when doing seals?

Just making WAG's over net.
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