Husqvarna 240 wont start

[Jwcrutc3828]

I need advice on problems im having with a husqvarna 240. It has been running fine for the past year, but a few days ago the chain popped off while using it and since then the rope is very hard to pull. Its not a constant resistance but just once per rotation it jerks back with a lot of force. My first guess was whenever the chain popped loose the sheer key might have broken too messing up the timing, but when i pulled the flywheel it was fine. It does spin freely with the sparkplug removed. I have already checked the following and i am out of ideas on what else could cause this. Any suggestions would be appreciated.

1. sheer key is fine
2. No play in crank shaft so bearings are fine
3. No wear or scoring on piston
4. Carburetor is clean and working properly
5. Exhaust is clear

 

[Chainmale]

Could it be something in the clutch jamming from the inertia?

 

[Jwcrutc3828]

Could it be something in the clutch jamming from the inertia?

Would taking the spark plug out still make a difference if it was the clutch? I would assume it would always be hard to turn

 

[Chainmale]

Would taking the spark plug out still make a difference if it was the clutch? I would assume it would always be hard to turn

Good point... So somehow it's over compressing,bit of a puzzler.

 

[Chainmale]

With the plug in, and the lead off is it still hard to turn? That could eliminate spark timing from the list

 

[Jwcrutc3828]

Yes plug in or even if I just cover plug hole with finger is if hard to turn

 

[Chainmale]

Could it be a problem with the reed valve being stuck ?

 

[Jwcrutc3828]

Could it be a problem with the reed valve being stuck ?

Not sure but I'll check

 

[Huskybill]

Does your saw have a rim and drum on the clutch? If so is the chain engaged in the pins on the rim correctly or is it hitting the case/crank.?

 

[rarefish383]

Joined Sept. 30, 2018, Last posted Sept.30, 2018.