Chain sticks when turned by hand...?

[Toby in Buckinghamshire]

Stihl or Oregon would be ok .

Thanks Stubby.

 

What does the plate over the oiler actually do? Is there any adjustment I could/should make to it?

[peatff]

Does the clutch spin freely by hand with nothing attached to it ?

[Toby in Buckinghamshire]

Does the clutch spin freely by hand with nothing attached to it ?

Peatff how would I test that? Surely the clutch doesn't engage unless the engine is running?

 

The sprocket spins freely when there is no chain and bar attached.

[bmp01]

I guess you've tried backing off the chain tension a fraction and got same result?

 

bmp01

[Toby in Buckinghamshire]

I guess you've tried backing off the chain tension a fraction and got same result?

 

bmp01

Hi mate, I've backed it off as far as I'm comfortable with and get the same result. That is to the point that when I pull the chain away from the bottom of the bar I can just see the bottom of a drive link.

 

Sent from my SM-G930F using Arbtalk mobile app

[bmp01]

Hi mate, I've backed it off as far as I'm comfortable with and get the same result. That is to the point that when I pull the chain away from the bottom of the bar I can just see the bottom of a drive link.

 

Sent from my SM-G930F using Arbtalk mobile app

 

Back off a bit more, you don't need to run it like that but let's see what happens, you might just have a chain with excessive tight spot ?

 

On another subject i had a cheap pole saw that was going tight and clicking, turned out 3 or 4 of the drive links were burred over at the edges. Was an Oregon chain, 90 % good links, and almost new. Needle file, burrs removed and all good....well, as good as it was going to be.

 

bmp01

[Stubby]

Back off a bit more, you don't need to run it like that but let's see what happens, you might just have a chain with excessive tight spot ?

 

On another subject i had a cheap pole saw that was going tight and clicking, turned out 3 or 4 of the drive links were burred over at the edges. Was an Oregon chain, 90 % good links, and almost new. Needle file, burrs removed and all good....well, as good as it was going to be.

 

bmp01

 

I thought that but he says it does it on a 15" and an 18" so 2 chains and 2 bars makes me think its maybe the spur .

[bmp01]

I thought that but he says it does it on a 15" and an 18" so 2 chains and 2 bars makes me think its maybe the spur .

 

Doh , I missed that. Thanks for highlighting it.

2 excessively tight spot chains then

 

Actually, lets see what the result of loosening the chain is.

Also, If the chain tightens every 7 drive links (one rev of the sprocket) then sprocket is at fault.

 

bmp01

[Toby in Buckinghamshire]

Doh [emoji38] , I missed that. Thanks for highlighting it.

2 excessively tight spot chains then [emoji38]

 

Actually, lets see what the result of loosening the chain is.

Also, If the chain tightens every 7 drive links (one rev of the sprocket) then sprocket is at fault.

 

bmp01

Thanks guys. I'll loosen the chain off tonight and let you know how it is.

 

Doesn't seem to be related to a position of the sprocket. Seems like you have to use more pressure to start it moving but after that it rotates more freely.

 

I'll also get a new sprocket on order.

 

Thanks

 

Toby

Edited April 24, 2017 by Toby in Buckinghamshire
More detail

[peatff]

Peatff how would I test that? Surely the clutch doesn't engage unless the engine is running?

 

The sprocket spins freely when there is no chain and bar attached.

 

If the clutch drum is a bit oval or your clutch bearing is dodgy it will catch. If it spins freely no problem.