Bar nose seizing up again.

[woodyguy]

A while back my 362 with a 20inch stihl bar refused to turn the chain. I took off the chain and found that the bar end refused to turn. I thought it was damaged but on returning home I immersed it in white spirits and cleaned it out. No grit came out and it now runs fine. I had been cutting dead Sweet Chestnut.

 

This week the same happend on my 241. This time I put some petrol on it and cleaned it and it is now fine. Again cutting dead SC.

 

The nose wasn't just stiff to turn but couldn't physically be moved with a screwdrive. Has anybody else had this happen and how can I avoid it?

[mendiplogs]

A while back my 362 with a 20inch stihl bar refused to turn the chain. I took off the chain and found that the bar end refused to turn. I thought it was damaged but on returning home I immersed it in white spirits and cleaned it out. No grit came out and it now runs fine. I had been cutting dead Sweet Chestnut.

 

This week the same happend on my 241. This time I put some petrol on it and cleaned it and it is now fine. Again cutting dead SC.

 

The nose wasn't just stiff to turn but couldn't physically be moved with a screwdrive. Has anybody else had this happen and how can I avoid it?

 

HI WOOD what bar oil are you use thanks jon

[woodyguy]

The top Stihl one and always use the same.

[Dan Earp]

Just keep cleaning it out. I normally pop it in soapy boiling water for a soak once dried into a small tub of chain oil.

 

Its happened on birch pine etc with me, and has been a while since its done it again. I guess its just checking the tension is right for the chain

[woodyguy]

That's reassuring. Certainly SC is full of tannins but it doesn't seem to happen with oak which is similar. I just wondered about interaction between the bar oil and anything like wd40 that I might spray on the chain after sharpening it.

[Eddy_t]

Yeah, happened tons of times, bit of crap has jammed it. The tolerances of a sprocket are a lot tighter than you think! I usually free them by forcing it tbh

 

 

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[Dan Earp]

That's reassuring. Certainly SC is full of tannins but it doesn't seem to happen with oak which is similar. I just wondered about interaction between the bar oil and anything like wd40 that I might spray on the chain after sharpening it.

 

 

I personally wouldnt use wd40 as it just collects the crud

[woodyguy]

Yes agree. think I've come to the same conclusion about mixing things. Will stop and see if it occurs again on dead SC.

Although it must be "crud" on the sprocket, I've been amazed how hard it is to shift and that it only occurs with SC and not birch, oak, holly etc.

[SawTroll]

You could of course try to turn up the oiler, if it isn't already set at max.

 

Some times it is enough to force the sprocket back and forth on a plank or similar.

[billpierce]

a mate of mine kept siezing bars. he reckoned it was because he was keeping his saws in a a boiler room and the bearings weren't loving it. i guess just another varient to consider!