Piston diagnosis

[Stihlsmoking]

I use metal piton stop on disassembly when I know piston is getting replaced. Not on reassembly use rope ?
Of course the piston stop was a freebie used rope prior to that.

 

[dall]

i dont use anything usually in the cylinder the impact and compression usually is enough to get the flywheel and clutch off but the ebay customer used a piston stop on that piston

 

[Nitehawk55]

I like rope myself but be careful not to get it in between the piston and a port or it will cut a piece off getting it to TDC .
That will cause you to cuss a bit

 

[Definitive Dave]

I let him know what Stihl said and told him if he felt I was somehow at fault I would send him a replacement.
With the piston in hand the guys in the parts and service departments were pretty evenly split on the whole piston stop vs. spark plug electrode controversy.
I am leaning a lot more towards the piston stop theory because, as a few guys mentioned, if the electrode was touching the piston at TDC I can't imagine you could pull it fast enough to fire it off.
thanks for the opinions guys
Dave

 

[dall]

too bad you may have to take one in the uncovered chap area

 

[Stump Shot]

What really should happen is tell customer that he was tried at the OPE court of small engines by many jurors to be found guilty of saw abuse, and fined the price of a new piston and an apology to you.

 

[dall]

and a big gfy ?

 

[Stump Shot]

Really BIG!

 

[jmssaws]

I didn't read the thread because I'm lazy but I say plug was long and he tried to start it.
Looks like a sharp corner instead of a rounded piston stop

 

[backhoelover]

couldnt be the plug. i think the elastic start handle rubber bushing would have broke before it knock a hole like that in the piston. and by the way this is going on the shop wall lol

 

[jmssaws]

couldnt be the plug. i think the elastic start handle rubber bushing would have broke before it knock a hole like that in the piston. and by the way this is going on the shop wall lol

Only reason I say that is because I may or may not have done that once in my youth.
Plug out of a motorcycle leaves a mark just like that.

 

[Gunn]

CCSI Chainsaw Crime Scene Investigation- I'd watch it.

Ole Emu legs would be the aged yet distinguished crew leader.

Def Dave would be there for comedic relief and sweet hair.

Brad would need some boobs, but he'd fill the token girl slot with a little work.

Saw troll could be the old Ans I mean old azz medical examiner ...er Stihl Gold tech.

It would be a toss up between Jacob J or Scarr to be the edgy yet brilliant analyst, but I'd allow them to roshambeaux or rock scissors paper to decide the winner.

Did I miss anyone?

 

[Nitehawk55]

If the plug reach was that long I think you would see a few thread marks in the piston as it is softer than the plug and the plug would likely have enough angle to it to mark it .

 

[Backtroller]

That's awful. He probably expects you to make it right and will leave negative feedback if you do not. I feel for you Dave.

 

[dall]

some people have the thinking they can do no wrong and the world owes them what they want those are the ones that make it bad for everyone else

 

[1990Husky262]

some of the cheap piston stops have a sharp edge on them and would probable leave an impression like that

 

[stihl saws]

I let him know what Stihl said and told him if he felt I was somehow at fault I would send him a replacement.
With the piston in hand the guys in the parts and service departments were pretty evenly split on the whole piston stop vs. spark plug electrode controversy.
I am leaning a lot more towards the piston stop theory because, as a few guys mentioned, if the electrode was touching the piston at TDC I can't imagine you could pull it fast enough to fire it off.
thanks for the opinions guys
Dave

Dave, my vote is the piston stop. You should replace his entire saw. Or just tell him what we're all thinking. GFY!

 

[dieselfitter]

I let him know what Stihl said and told him if he felt I was somehow at fault I would send him a replacement.
With the piston in hand the guys in the parts and service departments were pretty evenly split on the whole piston stop vs. spark plug electrode controversy.
I am leaning a lot more towards the piston stop theory because, as a few guys mentioned, if the electrode was touching the piston at TDC I can't imagine you could pull it fast enough to fire it off.
thanks for the opinions guys
Dave

Ask the *dipstick to explain exactly how you are at fault. So you can prevent this from happening again.

 

[jmssaws]

I did knock a hole exactly like that with a spark plug but it could have been a piston stop but I figure he thinks he done no wrong because the plug hit it.

 

[tickbitintn]

Tell him it's a super special easy start compression release feature and you should have charged him more for it....