Chain won't spin after tightening the nut

[AVB]

got the chain sharpened after hitting some barbwire in a tree

I am wondering if you sharpen the chain yourself or did you have someone else to do it? If it was someone else are you sure you the same chain back? Count your DLs and compare it the bar specs.

As J.Walker wrote it may be off one DL either way and it can be a world difference on some bars.[/quote]

 

[old guy]

My guess is if that bar is 14" it also may be thinner, check the thickness with a mike or caliper, if it is thinner it also may be a 3/8 lo pro bar.

John

 

[lone wolf]

Turn the saw upside down in a vice with the front nut loose , then tighten in increments and look with a flashlight to see if the chain is rubbing on the saw body anywhere.

 

[livemusic]

Thanks for the help, I will get some pics up after I finish my afternoon project.

I don't know if this is the correct bar... I wondered that myself soon as I realized it is a 14" bar on this badass 50cc, ported saw with the next size up larger carburetor. I bet it would even cut well with 18" and maybe even 20"!

 

[Old2stroke]

Try mounting the bar and chain on the saw without using the cover. Make up for the thickness of the cover with a few washers. This will give you a better view of the bar base and the drive sprocket which might help figure out what is going on.

 

[mesupra]

Make sure it's well seated into the drive ring. I've done that before.

 

[CR888]

Sounds exactly like the symtoms associated with worn drive tangs/worn sprocket. I bet a new sprocket and chain will fix this issue. Sure you can make what you have work and run but best solution would be to replace chain & sprocket to prevent stress to other components. While I am some what guess diagnosing, based on the info given and my experience, its a good guess.

 

[J.Walker]

Thanks for the help, I will get some pics up after I finish my afternoon project.

I don't know if this is the correct bar... I wondered that myself soon as I realized it is a 14" bar on this badass 50cc, ported saw with the next size up larger carburetor. I bet it would even cut well with 18" and maybe even 20"!

I have a ported 346 set up as a limbing saw.
The saw has a Husky 325 bar, 56 drivers, 50ga. It's about 14"
I run a 8 pin sprocket on the saw.
It's got good chain speed!

 

[livemusic]

Here are some pics. Chain has 52 links, I counted. Every other cutter has 37 stamped on it. What does that mean?

 

[livemusic]

Here are some pics. Chain has 52 links, I counted. Every other cutter has 37 stamped on it. What does that mean?View attachment 486102

 

[livemusic]

View attachment 486104

 

[livemusic]

View attachment 486106

 

[livemusic]

View attachment 486107

 

[livemusic]

View attachment 486109

 

[livemusic]

I dunno... I clicked on 'thumbnail.' Those pics don't allow you to zoom in? So, I should have clicked on 'full image?'

 

[rob066]

View attachment 486104

It is Husqvarna chain. H37 is .050 gauge 3/8 lo profile chain. You need .325 on that saw.

 

[beentown]

Had a friend...he was having an issue getting his clutch cover off, decided to pry it free with the scrench, then couldnt gt it back on. When I approached he was like a two sweaty monkeys trying to make love to a football...lol



Long story short, he had the chain brake on while trying to remove the cover. His didn't spin freely after that until fixed.

 

[livemusic]

It is Husqvarna chain. H37 is .050 gauge 3/8 lo profile chain. You need .325 on that saw.

Did you see the markings stamped on the bar? 3/8", .050", 52DL. Are you saying this chain is not a match (for this bar) or are you just recommending a .325?

As for a chain type, does it matter that this saw is strong, ported and larger carb?

 

[rob066]

H37 is designed for low hp saws. A 346 can easily bend this chain. .325 pitch have much stronger chassis. The .325 is suited for this type saw HP.

 

[JeffGu]

Yeah... I'm not a Husky guy, but isn't a 346 a 45cc saw that runs .325 chain? Is the sprocket the stock .325 one, and you're trying to run 3/8 Lo Pro on it?