Chainsaw Repair
Husqvarna - Stihl - Poulan - Jonsered - Dolmar chainsaws and more => Dolmar Makita => Topic started by: rayvil01 on February 03, 2019, 08:05:35 pm
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I had a moment of abject stupidity. Just leaned on a bar bolt nut too hard and stripped the threads completely on the casing side of an old favorite saw, my Dolmar PS 540. Can I get away with an 8mm X 1.25 Helicoil for a repair?
Thanks,
Ray
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I ask the chainsaw repair group for you.
Some ideas.
I wouldn't reccomend helicoil for anything unless material is lacking. Stihl studs can sometimes be screwed in. For thread repair I'd use these. https://www.mcmaster.com/#90699A315
Stainless threaded insert works great on any say. Drill and tap for tge insert and JB Weld the threads before screwing it in. Better then factory
Stihl stud repair I know of. But these I didnt know if they had a bigger repair stud or not. Seen folks drill out case and tap for a redneck bar stud deal. Cant remember it all.
I wonder if the stihl ones I have saved in thread would work for him. Turn or grind shoulders down.
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Nate a dolmar makita echo dealer = i would skip the helicoil....key sert like shawn suggested or time sert. on holes that were to big for a time sert i have also drilled/tapped to next size up and screwed a bolt in it with red loctite on it. after it set up i cut the bolt off flush and drilled/tapped it for the correct thread.
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Thanks for the info. Much appreciated.
Ray
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I can't remember off the top of my head for sure what saw I fixed, I think it was my old Stihl 019.
But I was able to put a longer bar stud in it and back a nut onto it inside the oil tank, right through the oil tank filler hole.