Stihl piston stop tool

[GardenKit]

Hey there. Those five methods cover it. What do you reckon is wrong with the nut runner method, as this seems to work a treat. Too much shock to bearings or rings?

 

Putting a load of torque on a piston stop worries me just as much, if not more?

 

Cheers all, John.

I personally do not think there is anything wrong, as long as the gun is used with some kind of understanding and 'feel' of threads and torques. I have been using them for 40 years so guess I understand them.

 

In the wrong hands it could cause damage though. For instance, if the gun is used at full rattle on a chainsaw clutch the impact is felt not only on the clutch nut, but also on the flywheel. So the flywheel key could shear before the clutch loosens. This may not be noticed until the saw will not start after replacing the clutch. I have never had this happen, but I believe it has happened to others.

 

Stihl do however state in their service manuals never to use impact guns anywhere on their machinery

[Logan]

Yes, understanding and "feel" make a lot of difference.

 

Further, after spinning clutch all the way back on, one single tap with the gun holds clutch nipped nicely until the chain tightens clutch naturally during work. seems safe to me.

 

Cheers, John.