357 screw size/pitch

[herne]

Got a husky 357 with one exhaust bracket support screw snapped and the one on the felling dogs side stripped. What's the size/thread pitch of these screws? Anyone know the helicoil insert or timesert insert size off hand?

 

Annoying as the saw runs like a demon. I can see a visit to Oncle Le-Spud in its future...

 

Regards

 

G

[Stubby]

Think its 5mm X 1.25 pitch .

[spudulike]

5mm X 0.8 on the support bracket where it fits to the upper dog mount, the ones that go in to the cylinder are 6mm. I think the ones that join the bracket to the muffler are M5 and if they are then they will also me M5x0.8mm.

[adw]

Spot on Steve.

[herne]

Cheers Spud. Now to get some inserts and an extractor for that broken stud.

[spudulike]

Cheers Spud. Now to get some inserts and an extractor for that broken stud.

 

You will probably be better just drilling out the hole and retapping the thread to the original size in the muffler, the one in the crankcase go ahead with the helicoil.

 

For the record, there is no need to remove the bracket to muffler screws to remove the muffler!

[herne]

Yes re bracket/muff issue. The saw came to me with these issues. Muff had failed at attachment points to cylinder and been removed by an unskilled person...

 

You know, kinda gorilla like😀

[herne]

So the saw has gone to a tame engineer for the attentions of an endmill on the broken bolt in the crankcase.

 

Insert to go in when it's back. Anyone used time sert inserts before? Considering getting a kit as I have several of this size to do.

[spudulike]

So the saw has gone to a tame engineer for the attentions of an endmill on the broken bolt in the crankcase.

 

Insert to go in when it's back. Anyone used time sert inserts before? Considering getting a kit as I have several of this size to do.

 

Not used them but used very similar on sparkplug holes with good effect. On normal M4/M5/M6 holes, helicoils are the normal way to go unless the hole is mashed and an insert is the only way out. Easy Outs are the normal way of removing sheared bolts.

[herne]

Yep. Broken off a few mil inside the case and i failed to drill it centrally. My bad but an endmill should resolve it.