Stihl 260

[oakland firewood]

I've got a 260 for some reason today the chain tightened up to the bar and stalled the engine,I adjusted the chain tension but as soon as I started it and the chain turned it automatically tightened again! I played for ages trying to find the problem but all I could come to was that there didn't seem to be a lot or at all oil getting to chain,all holes seemed free to the bar. Any suggestions?

[spudulike]

Pull the sprocket off, take the clutch off (spin it off clockwise), remove the oil pump, pul out the oil pickup and make sure the pickup pipe and filter are clear, make sure the oilways in the oil pump are clear - carb cleaner or WD40 is good for this.

 

Check the pinion worm drive is in good condition and the arm isn't damaged or loose on the pinion.

 

Reassemble and it should be OK

 

You could try flushing the tank with fuel before doing all that but it may not be effective.

[Stubby]

I've got a 260 for some reason today the chain tightened up to the bar and stalled the engine,I adjusted the chain tension but as soon as I started it and the chain turned it automatically tightened again! I played for ages trying to find the problem but all I could come to was that there didn't seem to be a lot or at all oil getting to chain,all holes seemed free to the bar. Any suggestions?

 

I thought that if the chain was not getting lubed it went slack too quickly as all the joints become loose due to premature wear ? Maybe you have a " tight spot " on the chain ?

[Rich2484]

Pull the sprocket off, take the clutch off (spin it off clockwise), remove the oil pump, pul out the oil pickup and make sure the pickup pipe and filter are clear, make sure the oilways in the oil pump are clear - carb cleaner or WD40 is good for this.

 

Check the pinion worm drive is in good condition and the arm isn't damaged or loose on the pinion.

 

Reassemble and it should be OK

 

You could try flushing the tank with fuel before doing all that but it may not be effective.

 

What he said.

[spudulike]

I thought that if the chain was not getting lubed it went slack too quickly as all the joints become loose due to premature wear ? Maybe you have a " tight spot " on the chain ?

 

All the oil is driven out, the chain gets hot and you get a resinous build up that makes the chain tight and generally a bit rusty looking.

 

The chain goes very slack once the oil flows again....trust me!

[Stubby]

All the oil is driven out, the chain gets hot and you get a resinous build up that makes the chain tight and generally a bit rusty looking.

 

The chain goes very slack once the oil flows again....trust me!

 

You know I trust you Steve