Husqvarna 3120

[ajschainsaws]

I gotta husqvarna 3120 early model without choke just purge button
I've put a new cylinder piston pressure tested and put a new coil on it and put a full carb kit on it and it is now doing some funny things in a pattern every time
It starts in two pulls give it a bit of throttle it burbles runs like a bag of s~~~~ then it backfires
Go to start it again and it starts and runs fantastic no tuning needed it wasn't until I looked at the chain when it's slowing down too stop I noticed the chain is running BACKWARDS

All new parts OEM
clutch has been threadlocked , as a perfect hole was cut a few weeks ago by the clutch in the cover with the bar and chain which pushed me too get down and dirty with this SOB
And i left it a few weeks and got back too it yesterday

When I restart it it does the same runs like a bag of nails then backfires and so on

Now would the flywheel have de magnetised

Any help will be appreciated

 

[cus_deluxe]

Sounds like key is sheared and flywheel shifted a bit.

 

[ajschainsaws]

That's a good point I I'll check that next

 

[Deets066]

So, you had your chain on backwards? or the engine rotation was backwards?

 

[ajschainsaws]

So, you had your chain on backwards? or the engine rotation was backwards?

No the chain was on correct the motor was defiantly running backwards

 

[Deets066]

No the chain was on correct the motor was defiantly running backwards

Recoil wrapped backwards?

 

[ajschainsaws]

I don't think so as 1st time starting it runs forward then backfires and next time you get it stared its running backwards

 

[mdavlee]

I've had that happen with the 385 when the coil came loose

 

[ajschainsaws]

When I was having a go at this saw a few weeks ago there was a cheap copy coil fitted on the saw that was a loose fit there was so much play on the mounts there where no numbers on this coil to identify it I put a OEM coil on it now
But what I noticed a few weeks ago that slipped my memory was this cheap coil was running on a different line on the flywheel than the original one
Now I have put this new coil on it's running along the original path