Husqvarna 268XP problems

[NeilT]

One of the bolts holding the muffler has sheared off. It's now held on only by two bolts. It's vibrating like mad and sounds loud, but not super loud. Any ideas how i can remove the  sheared bolt. Frustratingly, I can't get the bolts holding the dogs off as they've rounded off. This makes it hard to remove the muffler. I've been running the saw anyway, it's a great saw, but keep having to tighten up the remaining screw as it keeps vibrating loose. 

[lurch_917]

do you know any one with a welder that can weld some nuts onto the top of the rounded off bolts so you can remove and replace them ? i have had to do this a few time on sheared exhaust studs . or is your crank aplastic one that wont take the heat .

[Dan Maynard]

I would get it sorted and not run it, problem is those loose screws wear the soft aluminium of the block. It might already need a helicoil in the ones which have been coming loose. Weld a nut to the top of you can. Other way which might work is remove material from the bolt with a series of increasing drills until the head comes away, and you can remove the exhaust. Then you have the stem of the bolt to get hold of.

[spudulike]

Drill and use an easy out or possibly recut the thread if you can get it Bob on central to the broken screw. 

It is damn difficult to get central do the easy out is possibly the best option.

If you run it, the extra heat being dissipated from the leak may seize the engine...it has been known!!

[Stubby]

7 minutes ago, spudulike said:

Drill and use an easy out or possibly recut the thread if you can get it Bob on central to the broken screw. 

It is damn difficult to get central do the easy out is possibly the best option.

If you run it, the extra heat being dissipated from the leak may seize the engine...it has been known!!

All of this , all day long .

[adw]

We used to have a local engineer that did spark eroding, really clever system, which ever way you go you will need to remove the cylinder otherwise this could go terribly wrong, once off centre your done.