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Stihl 026


div_h
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That sprocket looks knackered, could a loose chain have slipped around it under load and eventually smashed the clutch - it needs replacing!

 

I'm going to be upsetting here and listen for the gasps of everyone when I say this but here goes. :blushing:

 

I'm going to disagree here. Granted the sprocket look a bit worn. But I've seen worse run for longer.

 

Not sure where the chain would go if slipping off under load. And how that would get the clutch. Granted it could jam up the drum and cause a lot of smoke and grunting. But would have to be very hot quick to explode the clutch in the way it has.

 

Agg. In a way no the spring wouldn't have pushed the clutch that far apart to split the nut but it could have triggered a chain reaction that could have caused the major failure.

 

I would put this down to bad luck, re place the parts and carry on :thumbup:

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I'm going to be upsetting here and listen for the gasps of everyone when I say this but here goes. :blushing:

 

I'm going to disagree here. Granted the sprocket look a bit worn. But I've seen worse run for longer.

 

Not sure where the chain would go if slipping off under load. And how that would get the clutch. Granted it could jam up the drum and cause a lot of smoke and grunting. But would have to be very hot quick to explode the clutch in the way it has.

 

Agg. In a way no the spring wouldn't have pushed the clutch that far apart to split the nut but it could have triggered a chain reaction that could have caused the major failure.

 

I would put this down to bad luck, re place the parts and carry on :thumbup:

 

I didnt mean sideways movement on the chain, I meant that sometimes the sprocket gets that worn that the chain actually slides over the slots cut in to the sprocket lobes and this harsh behaviour could cause shock damage to the clutch.

 

Seen this once on a Husky 45 but this sprocket doesn't look quite as bad as this as the wear to it although well past its best, probably isn't bad enough to cause this issue

P1050034.jpg.b87a0428a8e5ae0bc16de42fbcdd4249.jpg

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Just seen this, glad I did not get involved, I may have been burnt at the stake!

 

It just looks like a bit of bad luck following a bit of metal fatigue. It happens.

 

I've had a crap week to. The van broke down twice, I repaired it twice but got a bit impulsive and made an instant (impulsive) decision to buy a (nearly) new one. Now £12k poorer.

 

But forgot to budget in the costs of fitting it out with load restrainers, rear step, ramps etc, thats another £500. Oh well, its only money.

 

Best I get to the bench and start on the 30 or so machines that have come in in the last few days.

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