Author Topic: Early 1990's 044 vacuum test question  (Read 109 times)

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Offline 660magnum

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Re: Early 1990's 044 vacuum test question
« on: October 25, 2014, 12:07:35 am »
The definitive way to check the seals is the vacuum test. Seals will pass a pressure test but fail a vacuum test. So I would say that your seals are OK. The test vacuum value is 1/2  atmosphere or 15" and the test pressure is also 1/2 atmosphere or 7lbs. With the vacuum test you are to still have 2/3 of your original test value after 30 sec.

There is no need for you to do a pressure test now. The ease of the pressure test is that you can bubble check for leak areas externally.

A friend put a dual port front on the muffler of a early 044 last year and it really made a difference. He gutted the dog house out of the muffler inside also. It certainly was a likable saw after he changed the muffler. He obtained the muffler cover from HLS

Make sure your fuel and impulse lines are in perfect shape.
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