Chain sticks when turned by hand...?

[Toby in Buckinghamshire]

Morning all

 

I've recent bought a 2nd hand (but very lightly used) ms260. I have noticed when I turn the chain by hand having set the chain tension that the will rotate around the bar smoothly and then feels like it snags a little and takes extra pressure to move it, then it spins freely again. This only seems to happen when the front bar nut is tightened down. I'm not doing the front nut overly tight. Chain tension seems fine. And brake is definitely not on!

 

I have tried this with a used 15inch bar and chain and also with a brand new 18inch bar and chain, seems to be the same with each. But saw runs fine when started. My concern is that it could be damaging some part?

 

Some light wear to the sprocket but doesn't look too bad to me?

 

 

Like I said, this only seems to be an issue when the front bar but is tightened.

 

Any ideas/suggestions?

 

Thanks

 

Toby

[Stubby]

Is there any crap under the front bar stud area or, conversely some under the rear bar stud and not the front causing it to sit slightly out of line when you tighten up ? I would replace that spur any way just to eliminate it .

Edited April 24, 2017 by Stubby

[Toby in Buckinghamshire]

Is there any crap under the front bar stud area or, conversely some under the rear bar stud and not the front causing it to sit slightly out of line when you tighten up ?

Hi Stubby

 

No, it's all clean under there. Although I haven't had the metal cover off which sits over the oiler but that seems flat to me. Photo below.

 

[Chris Sheppard]

When it gets tight, does it do it at the same point on the chain each time?

[Pinkfoot]

Are chainsaws allowed in the kitchen?

No one told me.

 

Sent from my SM-G900F using Arbtalk mobile app

[Toby in Buckinghamshire]

When it gets tight, does it do it at the same point on the chain each time?

No, it doesn't seem to. It also does it on both a brand new chain and an older one.

 

Sent from my SM-G930F using Arbtalk mobile app

[Toby in Buckinghamshire]

Are chainsaws allowed in the kitchen?

No one told me.

 

Sent from my SM-G900F using Arbtalk mobile app

No comment [emoji15]

 

Sent from my SM-G930F using Arbtalk mobile app

[Stubby]

No, it doesn't seem to. It also does it on both a brand new chain and an older one.

 

Sent from my SM-G930F using Arbtalk mobile app

 

Change the spur to eliminate that .

[Toby in Buckinghamshire]

Will do, thanks.

 

I assume I should fit a genuine part? Seems like a very important component so worth spending the extra money!

 

Sent from my SM-G930F using Arbtalk mobile app

[Stubby]

Stihl or Oregon would be ok .