I simply bought a used Lawn Boy, model 10515 and the second time I used it, the spit out the spark plug, stripping the threads. I doubt they were already stripped and the seller put a bandaid ~ above it and sold that quick. Just how do you take the head off? ns looked in ~ it, and it looks prefer the head doesn"t come off. This is my an initial LawnBoy and also 2 bicycle engines space Greek to me. Am i blind, or carry out I have to take the whole engine personal to solve it? I thought I would remove the head, helicoil it, to buy a head gasket and also be on my way. Any pointers the end there? I saw from current activity, the there room others out there through this same version mower.




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walt2002
15 year ago

That would be one "F" collection engine. Yes, you require to totally remove and also disassemble the engine to execute it right. The cylinder and head space one pc.

What ns would carry out is take it apart and install a subject Insert. The is a little different and a lot much more substancial 보다 helicoil in my opinion. Both call for running a insanity which will make metal cutting the are likely to loss into the engine - no good.

IF friend are an extremely lucky, have actually a friend to aid and the equipment, you can shoot high press compressed air right into the exhaust harbor while to run the tap and get by. Undertake eye protection.

Walt Conner


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groucho_2006
15 years ago

marting, because that what it"s worth, they offer spark plug die that will re-thread the head but you perform so in ~ your very own risk since I don"t understand how poor the head is stripped . Favor Walt stated I"d make sure the exhaust holes are open and also the piston is at the lowest position,that way you inject compressed air throughout the whole cylinder. Great luck top top your brand-new project,don"t become discourged, however allways remember----CAVAET EMPTOR!!! (Let the the person who lives beware)


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mtgrs737
15 years ago

I think you have an "F" collection engine and also the head is part of the cylinder, so yes you will should disassemble the engine to fix it. You might try and execute the solve without disassembly yet if friend don"t gain the shavings out you could damage the piston. Look in ~ it this way: You have the right to do a finish decarboning that the piston and also head and also exhaust port. If girlfriend would prefer you could additionally install a new piston and also rings, bearings and also and seals, hone the cylinder and also have have a brand-new engine.


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adkinsca


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15 year ago

I had this problem on a Lawn-boy engine, and also used a spark plug repair kit. I bought a Sav-a-thread kit similar to the one presented in the attach below...

The kit has actually all girlfriend would have to do the job. It has a reamer to bore the larger diameter hole and also cut the new threads, three different length inserts (I needed the shortest one), and a punch (for permanently retaining the insert).

I go not remove the head on mine mower. Ns went really slowly v the reamer, utilizing grease on the to record the shavings. I eliminated it completely a couple times during the cutting, cleaned every the shavings and also put brand-new grease on it to save as many shavings as possible out the the burning chamber. I guess ideally you would prefer the head removed, yet if you space careful, girlfriend can control the shavings pretty effectively. After the brand-new threads to be cut, i cleaned the few shavings that were grounding in grease around the spark plug hole within the burning chamber carefully. I put the insert in mine engine two mowing periods ago, and also I haven"t noticed any difference in engine performance.

I also found a 2nd option because that the kit the is cheaper on ebay (item 320031083774)...http://cgi.ebay.com/ebaymotors/HELICOIL-SAV-A-THREAD-SPARK-PLUG-HOLE-KIT-M14-X-1-25_W0QQcmdZViewItemQQcategoryZ35625QQihZ011QQitemZ320031083774QQrdZ1QQsspagenameZWDVW

You can examine me ~ above this, but I think that the kit presented (HeliCoil 5334-14 Sav-A-Thread 14Mx1.25) is the kit you would require for the F-series engine. Great luck...