Yep. Don't do what I did.
Stihl 192 tc about 1 year old lost a muffler screw while in use.
The saw was stopped and I went to get a new screw at a nearby dealer.
He kept mentioning something about the wall being so thin, but, knowing what needed to be done I just asked for a new screw please.
The screws given were too long so I went back and requested to get replacements that were like the old ones.
He gave me them and I picked up hi temp epoxy and loctite 650 degree F (max temp) and..this is what I did wrong.
The epoxy in a small amount was mixed up and rolled into small earthworms that filled 1/4 of the threaded holes.
Then for "good measure" (yeah right....) I put a blob of hi temp loctite on the screws that were already in the muffler and ready for install (destruction).
I gently took turns tightening one screw then the other till both were secure.
Leaving it to set I was thinking that problem was solved and I went back to the work location for a big surprise.
All geared up I gave the handle a pull to start it up..
It was stuck for some reason.
I tried a few times and then the words from the dealer came to life in my head.
something like, "be careful, the walls are thin.....(walls are thin) ((walls are thin)) (((walls are thin)))....
After teardown completely I now have a dimple on the inside of the cylinder wall that seems to have toasted it (too much epoxy pressurized under the force of the screw gave a new meaning to thin walled cylinder)
Don't do this!!
Next step, is it possible to grind or file off the dimple on the side of the cylinder or will it cut through the nikasil? (sp) coating?
Thinking to get a new cylinder but wanted to make sure nobody else tried my...."repair" and ended up looking like an idiot.
Stihl 192 tc about 1 year old lost a muffler screw while in use.
The saw was stopped and I went to get a new screw at a nearby dealer.
He kept mentioning something about the wall being so thin, but, knowing what needed to be done I just asked for a new screw please.
The screws given were too long so I went back and requested to get replacements that were like the old ones.
He gave me them and I picked up hi temp epoxy and loctite 650 degree F (max temp) and..this is what I did wrong.
The epoxy in a small amount was mixed up and rolled into small earthworms that filled 1/4 of the threaded holes.
Then for "good measure" (yeah right....) I put a blob of hi temp loctite on the screws that were already in the muffler and ready for install (destruction).
I gently took turns tightening one screw then the other till both were secure.
Leaving it to set I was thinking that problem was solved and I went back to the work location for a big surprise.
All geared up I gave the handle a pull to start it up..
It was stuck for some reason.
I tried a few times and then the words from the dealer came to life in my head.
something like, "be careful, the walls are thin.....(walls are thin) ((walls are thin)) (((walls are thin)))....
After teardown completely I now have a dimple on the inside of the cylinder wall that seems to have toasted it (too much epoxy pressurized under the force of the screw gave a new meaning to thin walled cylinder)
Don't do this!!
Next step, is it possible to grind or file off the dimple on the side of the cylinder or will it cut through the nikasil? (sp) coating?
Thinking to get a new cylinder but wanted to make sure nobody else tried my...."repair" and ended up looking like an idiot.
