Ms280 Clutch change

[Sourwould]

I'm having some issues with my Ms280. After I release the throttle the chain is still spinning very faster for a really long time. Also stalling after long cuts. I think the clutch is sticking.

This 280 has the sprocket with the big triangular teeth, not the little one with slots for the teeth. I popped the snap ring and washer off the crank. I figured the sprocket/drum would just pull off. It doesn't. There's nowhere to pry or get the jaws of a puller onto. Suggestions?

 

[Efisher26]

Clutch usually is threaded on, clockwise to remove, if no hex head avail u need tool to remove it


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[Sourwould]

I'm just trying to get the sprocket off. It doesn't have threads.

 

[Efisher26]

Oooh, misunderstood, it should slide right off, did it spin freely? Has it seized and that's why chain kept spinning?


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[Sourwould]

It is spinning freely. I can pull it out maybe a 1/8" and it won't come off any further. Oddly, when it's pulled out, it doesn't spin free anymore.

 

[Efisher26]

Any resistance from the clutch? I'm thinking it maybe hanging up inside the drum


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[Sourwould]

I think so, yes.

 

[Efisher26]

Lightly tap around the drum with a hammer,see if the clutch pushes back down


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[HarleyT]

Likely just some gum buildup on the inner lip of the sprocket, it'll come off.

 

[Sourwould]

Finally got the damn thing off. Had to take the chain brake strap off and put it up with a couple of screwdrivers. I think it's been sticking from oil getting down in there, lime drum brake on a truck with a bad axle seal.

 

[HarleyT]

Your clutch is probably fine. Clean the drum thoroughly, lube the bearing, re-assemble, and give it a try.

 

[pioneerguy600]

Is it an optical illusion or is there a missing chunk in that clutch drum at around 9 o`clock position

 

[Efisher26]

The worm gear spring sits in that notch


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Just a home owner that likes the older better made machines

Craftsman 3.7 x2
Husqvarna 36

 

[pioneerguy600]

The notch for the drive is usually only about 1/8" wide, in the picts it looks much wider, maybe just looks wider but I doubt that.

 

[Efisher26]

It does look wider, but pics looks distorted there


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Just a home owner that likes the older better made machines

Craftsman 3.7 x2
Husqvarna 36

 

[Efisher26]

The more I look at it the more one of the edges looks angled, did a piece break off and get stuck and that's why the drum wouldn't come off?


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Just a home owner that likes the older better made machines

Craftsman 3.7 x2
Husqvarna 36

 

[Sourwould]

I cleaned up the clutch drum and my sticking clutch issue is gone. I didn't notice any missing chunks cleaning it up. Got to take it back apart again though, since I don't think I got the oil pump drive seated correctly.

 

[Efisher26]

U checked worm gear thread while in there?


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Just a home owner that likes the older better made machines

Craftsman 3.7 x2
Husqvarna 36

 

[Sourwould]

I didn't, no.

 

[Smokepole]

Time to spend $25 on a service manual. Never heard anybody that bought one complain it was a waste of money. You wont regret it.