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husky 61 compression

Started by chuck172, February 17, 2018, 02:01:19 PM

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chuck172

what should the compression be on a husky 61?
I'm having problems and the compression is 90psi.

sawguy21

It should be at least 125psi. Remove the muffler and check the piston for scoring, galling or excessive discoloration.
old age and treachery will always overcome youth and enthusiasm

chuck172

I removed the muffler. Piston looks great. Just a slight amount of carbon near the top.
edit: Just inspected the piston again, there are some very light vertical scratches. I mean very light. Could that be whats causing the low compression?

dougand3

Scratches will cause low compression. If your reading of 90 PSI is accurate (cheap gauges tend to read really low...like 1/2 the PSI), then the ring is totally worn out with a big ring end gap or the exhaust wall of jug will be significantly scored. You may be able to tell with a flashlight looking through the plug hole. If not, pull the jug and see.
Husky: 372xt, 272xp, 61, 55 (x3)...Poulan: 315, 4218 (x3), 2375, 2150, 2055, 2000 (x3)...Stihl 011AVT...Homelite XL...Saws come in broken, get fixed or parted, find new homes

mike_belben

If you can hold the saw up by the starter rope without it reeling out,  it should have enough to run.
Praise The Lord

chuck172

Quote from: mike_belben on February 17, 2018, 06:42:55 PM
If you can hold the saw up by the starter rope without it reeling out,  it should have enough to run.
Is that with or without the spark plug in place?

starmac

Quote from: chuck172 on February 17, 2018, 09:31:41 PM
Quote from: mike_belben on February 17, 2018, 06:42:55 PM
If you can hold the saw up by the starter rope without it reeling out,  it should have enough to run.
Is that with or without the spark plug in place?

With, it will have 0 compression without it.
Old LT40HD, old log truck, old MM forklift, and several huskies.

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