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Briggs-Fan
Briggs-Fan, Small Engine Technician
Category: Small Engine
Satisfied Customers: 1198
Experience:  over 15 years experience in small engine repair, multiple certifications
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I have a huskavarna 55 chain saw its getting fuel and spark

Customer Question

i have a huskavarna 55 chain saw its getting fuel and spark but wont start could it be the stop switch or coil
Submitted: 10 months ago.
Category: Small Engine
Expert:  Briggs-Fan replied 10 months ago.

Hi my name is ***** ***** welcome to Just Answer if your getting spark at the plug and you know it's getting fuel the first thing you would check is compression , being a 2 cycle it needs at least 90 psi to run .

Customer: replied 10 months ago.
its got good compression
Expert:  Briggs-Fan replied 10 months ago.

What compression reading did you get ? When did it last run ? , did it have gas that's 3 months or older in it ?

Expert:  Briggs-Fan replied 10 months ago.

If you gave spark at the plug with a spark tester then the switch is ok because if the on off switch was bad or the coil was bad it wouldn't have spark .

Customer: replied 10 months ago.
about 84 psi
Expert:  Briggs-Fan replied 10 months ago.

Ithere's your trouble you need 60 psi on a 4 cycle , and 90 on a 2 cycle , if it's lower than 90 it won't run . 90 is on the low end , most saws are running 120 to 140 psi . It could be the ring is worn or the cylinder too but you will have to remove the muffler to loo in the cylinder to see if it's scored

Expert:  Briggs-Fan replied 10 months ago.

Here is a video of a 55 racer compression test , it's hitting about 180 psI

http://youtu.be/yeKSYT9I4hQ

Expert:  Briggs-Fan replied 10 months ago.

Hi were you able to see the video ?

Expert:  Briggs-Fan replied 10 months ago.

Hi did you ever see the video I sent ?