This trimmer uses a Champion spark plug RDZ4H. Amazon sells various sizes of piston stops, I'm thinking this might require a 14mm? (see link).


https://www.amazon.com/PISTON-CHAINSAWS-BRANDS-REPLACES-504910605/dp/B074Q2TX1R/ref=sr_1_fkmr0_1?s=lawn-garden&ie=UTF8&qid=1530837919&sr=1-1-fkmr0&keywords=piston+stop+troy+bilt+trimmer

Are you just trying to hold the piston so the engine doesn't rotate so you can pull off the flywheel nut? If so, pull the spark plug and stuff the combustion chamber with clothesline or string.

Impact wrench works wonders, too.

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617 swapped Toyota Pickup, 22-24 MPG, 50k miles on swap

How would I use an impact wrench to do this?

The impact wrench usually doesn't need the crankshaft to be held, or at least not hard at all - a gloved hand holding the flywheel will be enough. If needed, you can pull the magneto off, wrap a rag or oil filter wrench or something around it to get some grip, and then try. Or stuff the cylinder with clothesline. But usually an impact wrench and gloved hand on the flywheel will be plenty.

I love my cordless impact driver. It's a beast.

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617 swapped Toyota Pickup, 22-24 MPG, 50k miles on swap

WTF is this? Oh I see it's going the way like everything else now. Like smoking where there is no smoking allowed, drinking beer in car on the street. letting your dog off the leash in public spaces when it isn't allowed, pooping on peoples front lawn..

You equate events that cause actual harm to other people, with a simple forum post which would have been precisely zero trouble to you at all had you not made the choice and taken an action to click on it. Then you made the choice again to further inconvenience yourself with a post complaining about it.

Interesting. For your sake, I hope you don't live the rest of your life this way.

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617 swapped Toyota Pickup, 22-24 MPG, 50k miles on swap

The primary purpose of this Forum is to act as an educational forum for the exchange of information for all things Mercedes. All are encouraged to participate in this information exchange in the spirit of openness and fun. We are dedicated to maintaining the forum as a comfortable and enjoyable place on the Internet to spend your time.

The main thing is, you're a newbie and trying to set policy, not your job .

I'm interested in this thread because I'm a Mechanic and always trying to learn new things .

? Is this tool to hold the piston whilst the flywheel nut is torqued or is it to use in lieu of a dial indicator for ignition timing ? .

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-Nate
1982 240D 408,XXX miles
Ignorance is the mother of suspicion and fear is the father

I did then what I knew how to do ~ now that I know better I do better

It is the tool to hold the pisto while the clutch is tightened. I should have the 10 mm piston stop tool tomorrow; will post photos for clarification.

Thank you very much H.M. .

As an older Mechanic I prefer to use the torque wrench on flywheel & clutch basket nuts but I have an electric (plug in) impact gun tool I mostly use for loosening things .

In my long career I've seen quite a few engines ruined by these nuts coming loose .

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-Nate
1982 240D 408,XXX miles
Ignorance is the mother of suspicion and fear is the father

I did then what I knew how to do ~ now that I know better I do better

Both piston stops I ordered are incorrect; there exists a definite possiblity they may put a hole in the piston of a small engine! DO NOT USE!!!


I'm ordering the correct type tomorrow, please watch this video as it may save your lawn mower, chain saw or weed eater from destruction!!


https://www.bing.com/videos/search?q=how+to+use+a+home+made+piston+stop+tool&docid=607999111923695649&mid=516845B28DB8AFB2129A516845B28DB8AFB2129A&view=detail&FORM=VIREHT

Seriously, clothesline or string in the combustion chamber. Cushions the whole surface of the piston, spreading the load out. Easy easy easy easy easy. And cheap. Also universal size, a ball of string fits all engines. You can even use the string for other things afterwards.

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617 swapped Toyota Pickup, 22-24 MPG, 50k miles on swap