Husqvarna 266 stripped muffler bolt and scored cylinder PICS ...
There 39s no reason to use acid since there 39s no transfer. Go over the cylinder by hand with some 320400 grit, with lubricant, and polish the piston a little as well. For the striped threads, get a thinsert from Fastenal. It 39s a solid steel insert that will make it stronger than new. blsnelling, Oct 24, 2014. 13.