Husqvarna 385xp mystery backfire

[Gord404]

a nice burst of flame and a backfire, pulled the flywheel and it had a sheared key, put a good one on its place and ran great- I have built and fixed hundreds of saws including 385 and 390,s so I have lots of parts and if it is your timing will be off causing it to fire at the wrong time or not at all- just trying to help-up to you what you do

 

[david newbie]

a nice burst of flame and a backfire, pulled the flywheel and it had a sheared key, put a good one on its place and ran great- I have built and fixed hundreds of saws including 385 and 390,s so I have lots of parts and if it is your timing will be off causing it to fire at the wrong time or not at all- just trying to help-up to you what you do

I will pull the flywheel and see if it sheared. Thanks

 

[J D]

If swapping the coil fixed it then that would've been it (Gord may have missed that post)

 

[david newbie]

If swapping the coil fixed it then that would've been it (Gord may have missed that post)

Can’t quite say that it fixes it. It changed it. I will fire and run, but quite slowly. So,arb I still have some figuring to do. In the meantime, u will also rebuild the carb

 

[Gord404]

Low speed needle should be about 1- 1 &1/2 and so should the high for starters and tune from there and if it doesn't run any better then time for a carb rebuild