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You are watching: Repair stripped spark plug hole lawn mower


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Garbage choose a relatively brand-new Craftsman mower and also discovered the spark plug threads have actually been stripped. You have the right to see it"s quite negative in the snapshot below. Picked up a kit from Amazon for $10 to fix the problem. Have actually watched a couple of videos about it so I know the cover the threading tool v grease and even put some document towel in the hole before beginning to shot to catch any kind of shavings.Anybody excellent this repair? very first time for me.
After you have reduced the subject but prior to you placed the insert in wash the hole v petrolIf girlfriend can acquire the feet pointing directly up .leave it for a few minuted the spin the engine as quick as you can to expel any type of chips.I shove a lengthy air duster in the hole and give that a nice lengthy blast .Then download the insert .When friend break off the tank. Use a magnet to pull the tang out.From now on put a thin SMEAR of nickel anti sieze ~ above the plug to stop it gauling and pulling the insert out.Very essential the have the insert 1 complete thread reduced in the hole so the plug have the right to seal versus the head.
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Reactions:Joe Kuhn
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After friend have cut the thread but before you put the insert in wash the hole through petrolIf you can obtain the hole pointing straight up .leave it because that a few minuted the turn the engine as fast as you have the right to to expel any type of chips.I support a long air duster in the hole and also give that a nice lengthy blast .Then download the insert .When you break off the tank. Use a magnet to pull the flavor out.From currently on put a slim SMEAR the nickel anti sieze on the plug to protect against it gauling and also pulling the insert out.Very important the have actually the insert 1 full thread reduced in the hole so the plug deserve to seal versus the head.
Thanks for the details. I"ve offered them, specifically the nickel anti-sieze idea and also having the insert reduced in the thread so the plug deserve to seal versus the head.I need to preface the remainder of this through the reality that this is mine hobby and I"m below to find out so I might not execute what a shop might do in bespeak to do money. I often spend money/time I know I won"t recoup in bespeak to find out something native the repair. This one is no exception.To begin with, the repair kit i show over had a tap the was actually too huge to acquire into the hole and also start cutting. I had actually to get a 9/16" drill and also bore it out prior to I might start cut threads. The over-sized tap led to some slop once the insert was screwed in. You deserve to see the here:
For that reason, I would certainly not introduce this kit.Second suggest is I might not check out what i was walking to leaving inside the cylinder, so i took the head turn off the engine and worked v it separately. Ns was glad ns did together you deserve to see all the shavings involved. Correct the tap was also big, yet I"m not around to leave that kind of stuff within a cylinder. In the end, both sides were nice and clean.
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Here ns am was standing on the head to hold it flat up against the cement floor, carefully transforming my socket wrench to keep the madness straight.With a little trim work on the bottom the the insert in the second picture and also I was good to go.

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Briggs serial number: 128M02-0943-F1 calls because that 140 inch pounds of torgue every this link, the line for the 120000 series (128M02 = 120000 model series - note to self: you just use the very first two digits):https://outdoorpowerinfo.com/engine_specs/briggs_head_torques.aspTrying to discover the torque on the Briggs website to be a problem, so i went through the above. Any help finding this top top the Briggs site would be appreciated. I"ve failed there in the past. They might use some help with website design.Engine started first pull with brand-new oil and brand-new gas. It did not run fine though till I offered it a little choke manually. Ns purchased a thermostat because that the automatic choke, which should do the trick. I taken into consideration cleaning the carb, yet the choking was difficult to move manually and also I"ll see exactly how it runs with the new thermostat first.Because the tap to be so huge I had ordered a second kit. Wish I had waited because that it to arrive as the tap to be smaller and also would have functioned better. Keep in mind the inserts for this kit were made that aluminum vice versa, the first kit had actually inserts made of steel. Don"t recognize if that matters.ABN is the kit v the overlapping tap & steel inserts. Autocraft has the correct dimension tap & aluminum inserts.