How to remove clutch if nut is stripped stihl 038

[Wolfnw]

Got a new saw today and started to break it down and got to the clutch and the nut is stripped. What’s the best way going about removing it?

 

[cuinrearview]

Screwdriver or punch and a hammer

 

[Partner]

make some key

 

[Ketchup]

Do you have a photo? Sometimes a Husky clutch tool will fit on older Stihls.

You can also try filing the hex head down to 12mm.

Your threads are probably seized. Deep Creep, acetone/ATF, and patience. Supercooling the crank can help too. (Try an upside down can of Super Duster or Canned Air. It should drip liquid nitrogen when triggered.)

 

[Wonkydonkey]

Do you have a photo

yeh photos help, someone could have been doing it up when they were trying to undo it.. ?

iirc it’s a std stihl clutch.. the worst case is pull the springs out and the shoes then you could fashion something up to fit , ie an angle grinder style removal tool.

edited to try and fix fubbarded quote

 

[Duce]

Have made several old or cheap sockets into removal socket for impact gun. Just cut them up with die grinder or whatever gets it done.

 

[Wolfnw]

Do you have a photo? Sometimes a Husky clutch tool will fit on older Stihls.

You can also try filing the hex head down to 12mm.

Your threads are probably seized. Deep Creep, acetone/ATF, and patience. Supercooling the crank can help too. (Try an upside down can of Super Duster or Canned Air. It should drip liquid nitrogen when triggered.)

I’ll get some pics when I get home from work. It’s not stripped terrible but I defiantly didn’t want ti make it any worse. I was kinda thinking about filing it down to a 12. Just for a second thought about welding a old socket to it hahah but all that heat would probably cause lots of problems.

 

[Duce]

I’ll get some pics when I get home from work. It’s not stripped terrible but I defiantly didn’t want ti make it any worse. I was kinda thinking about filing it down to a 12. Just for a second thought about welding a old socket to it hahah but all that heat would probably cause lots of problems.

See that clutch is wide between pads, how about a plate with three studs or hardened bolts through holes, then weld a socket or head of bolt to plate and spin it off. Make a spanner type tool, drill different holes and could move bolts around to fit clutch openings. Wait I might patent that.

 

[Ketchup]

I would try hacking up a socket before filing down to 12mm. A socket is nice because you can put it on an impact. Filing is a slow process and not hard to mess up. I would also do my best to free the threads first. I would be willing to bet that’s why the clutch is stripped.

 

[Al Smith]

That damned short nut head I think Stihl made it to round off on purpose --azz holes .You take a box end wrench or a socket and notice the end has a slight chamfer with a little stubby thing like that it can't gain purchase .What I've done is used a belt sander and grind the end perfectly flat then it will hold .Six point now not a 12 point . Don't forget that thing is a left hand thread

 

[Woodslasher]

That damned short nut head I think Stihl made it to round off on purpose --azz holes .You take a box end wrench or a socket and notice the end has a slight chamfer with a little stubby thing like that it can't gain purchase .What I've done is used a belt sander and grind the end perfectly flat then it will hold .Six point now not a 12 point . Don't forget that thing is a left hand thread

I use a very robust scrench and a cheater pipe for that exact reason, the screnches don't have chamfers on them.

 

[qurotro]

Yes. The 19mm socket has a chamfer. Probably only half of the nut is engaged. I used angle grinder to grind one flat to let it engage the whole nut. Works alright.

 

[Al Smith]

I don't remember exactly the size but more than likely somebody could have used a 12 point socket .Didn't know any better I'd imagine .What could also work is a surface drive socket that grips the flats and not the corner like 6 point .You'd probably need to flatted it out so the whole thing could gain purchase . Worse case would be pecking it loose with a center punch an a BF hammer .Clutches don't fetch that much on flea bay

 

[Wolfnw]

Luckily it’s not totally rounded off. I’m gonna try a few things you guys have mentioned tonight and hopefully I can get it off easily. Was thinking about drilling two holes like a angle grinder has for taking grinding wheel off. It’s a 038 with done be Ace Morgan with a 046 carb and velocity stack. Gonna get it cleaned up and take a look at the cylinder and port numbers. I’m super curious what’s done to it. I bought it almost 2 years ago and never ran it. Just recently got into saws and porting so at the time I bought it I didn’t even know what “Ace Morgan” meant, but pretty cool to hear some of things one hear about him and his work

 

[Al Smith]

If you look at the first picture you'll see a notch .Somebody drove it on with a flat chisel at one time or another .

 

[Partner]

well, unfortunately, some people are throwing with whatever they can ;-)
or whatever they can get their hands on

 

[Dennisthemenace]

Yes, the 1119 series is bad for that. For the future grind the socket flat. For the present get a medium size chisel and hammer and a bit of heat and cool on the clutch threads

 

[Maintenance Chief]

 

[Maintenance Chief]

It's these

 

[64poncho]

View attachment 334041
It's these

These do work well on right hand thread fasteners. Will not grab a left hand fasteners.