Stihl 028 Super Muffler

[kkemp]

Hello I was cutting wood with my 028 super tonight and the one muffler bolt turned loose . It's stripped out . What's the best option to fix that ? Going to a 6 mm screw or are there better ways ? Thanks

 

[huskihl]

I pack some jb weld in there and on the screw and get it as tight as I can. Let it set up overnight

 

[kkemp]

Ok I had thought about that. but what happens if i ever want to take it back out ?

 

[Duane(Pa)]

Is this the upper (cylinder) or lower (case)bolt?

 

[kkemp]

Cylinder bolt

 

[Duane(Pa)]

I think there is enough meat in the cylinder to go up to 6mm. Anything else is a bit of a rig. If you know what I mean...?

 

[kkemp]

Yep I know what you mean . I put a new piston in it a couple months ago . First chainsaw I ever really messed with a lot . It's my favorite from my collection

 

[Duane(Pa)]

I went up to 6 on a stripped brake pivot/recoil bolt. I didn't even drill. just slowly and patiently went from stripped 5 up to new 6mm threads. Worked great. If it's a keeper, I would re tap and use some lock tite on the new bolt. I like the 028...

 

[kkemp]

Hopefully I have a 6 mm tap .

 

[BuckthornBonnie]

Careful trying to tap that area to m6. It can work, but if you rush it you can bust the boss area and you may need a new cylinder. Time sert would be the best option if you know anyone with an m5 kit.

 

[kkemp]

Ok. Would it work to use a piece of all thread ? put a lock washer and nuts on both ends

 

[lwn9186]

I have used these in the past: https://www.mcmaster.com/#standard-threaded-inserts/=15dn325

 

[Wood Doctor]

Once this happened to me. The threaded hole in the cylinder would accept a slightly longer m5 bolt. The threads further in were not stripped. So, I used a slightly longer bolt and it worked well enough to hold it. Consider also some temporary thread lock adhesive while doing this. However, the engine heat may make that useless.

 

[trooney]

What Edwin said!! The holes in the cylinder are probably drilled out far enough to accept a longer bolt. If that doesnt work I'd try the timesert.

 

[huskihl]

Ok I had thought about that. but what happens if i ever want to take it back out ?

The screws come out normally, in my experience. It's not a great fix. But if you're nervous about retapping a new thread, it works fine

 

[kkemp]

Ok. Just getting off work I'll try the longer screw . There's plenty off room for it back there .

 

[kkemp]

I put a longer bolt in it . Seems to be holding pretty good . I'll cut a little and see if comes back out .

 

[kkemp]

It held so far . Thanks guys .

 

[BuckthornBonnie]

Keep an eye (and an ear) on it. Good luck!

 

[Wood Doctor]

No cure is perfect, but I have a sneaky suspicion that this is going to work.