Stihl piston stop tool

[wisecobandit]

The same as what they supplied with the 660...

 

 

Guess who just broke the end off a brand new one inside the cylinder and wasn't quite enough clearance to fall out thru the exhaust port without loosening the 4 bolts to lift the cylinder enough to drop the piston crown level with the bottom of the exhaust port Luckily just replaced the cylinder so only cost me a few minutes.

 

Wont be using one of them again...

[spudulike]

The same as what they supplied with the 660...

 

 

Guess who just broke the end off a brand new one inside the cylinder and wasn't quite enough clearance to fall out thru the exhaust port without loosening the 4 bolts to lift the cylinder enough to drop the piston crown level with the bottom of the exhaust port Luckily just replaced the cylinder so only cost me a few minutes.

 

Wont be using one of them again...

 

Those plastic ones are bullet proof - I always use them and rope as a backup:thumbup:

[GardenKit]

Or you could do as one of my customers did a few weeks ago and stick the end of the scrwrench through the plug hole, over the piston and into the exhaust port. Then give the clutch a good heave with a knuckle bar in an anti clockwise direction.........

[spudulike]

Or you could do as one of my customers did a few weeks ago and stick the end of the scrwrench through the plug hole, over the piston and into the exhaust port. Then give the clutch a good heave with a knuckle bar in an anti clockwise direction.........

 

Mmmm, nice, did the cylinder survive? Rich had one like that and I said to raise and re-bevel the exhaust port - you may get away with a custom or no base gasket to get the timing back to normal....on the exhaust anyway:thumbup:

[peatff]

If it goes in through the plug hole why won't it come back out there ?

[wisecobandit]

If it goes in through the plug hole why won't it come back out there ?

 

By rights it would have done. I shaked, rattled etc with the saw upside down in the hope it may fall out for 5 mins but being an oblong shape it wouldn't fall "end first" just on the big flat which wont come thru the sparkplug hole in that particular way. For the sake of undoing the 4 cylinder screws after a few minutes of the above I thought why am I wasting my time doing this...

 

Spud/Barry do you use them much then? Maybe I just got a bad one. Im a bad boy normally and use a metal piston stop unless its a small saw in which case I use the string method.

 

Worst one ive seen someone in there infinite wisdom decided if they wedged a screwdriver in thru the exhaust port over the top of the piston to do the clutch it would be fine so similar to yours Barry. Didn't really damage the port but the piston took a beating and was gouged and mildly pinched the ring in the groove..

Edited June 4, 2014 by wisecobandit

[GardenKit]

 

Im a bad boy normally and use a metal piston stop unless its a small saw in which case I use the string method.

 

 

If you are bad, then I am mega bad, as I seldom use a piston stop at all. I use the very bad method of an impact gun (used with care) or impact via a punch and large hammer. (I know,...I know..)

 

But on the rare occasions I have resorted to a stop it has been a metal one, or starter cord. Have got a Stihl one somewhere, but not sure where.

[GardenKit]

Mmmm, nice, did the cylinder survive?

 

No, there was a nice little bite out of the top of the port and a neat nibble on the piston edge with a deep vertical groove and pinched ring.

 

It was an elderly, but much loved 361, but the customer prefers not to spend heavily on repairs of older kit, but to upgrade. On this occasion he actually crossed to the dark side and bought a 372XP.

[spudulike]

I have used the Stihl one for years, had them slip every now and then but they are generally good. Zi use rope on Huskys when the clutch won't spin off easily as it stays in place when tapping on the clutch!

[peatff]

I use some cord because it's what I have. For the scooter I use a spark plug with the ceramic broken off and a M6 bolt through it but I only use it to find TDC. I cut a socket down and made a clutch spanner for the 135 which worked better than beating it with a drift.