Don’t Make This Expensive Mistake Rebuilding Your Saws!

[Lightning Performance]

Yep, I have found all the 4 stroke small engines are single lipped seals without gator springs, but they don’t rely on holding vacuum, I guess that’s why?

Less wear and no case pressure

 

[lone wolf]

Less wear and no case pressure

And lower rpm right.

 

[Lightning Performance]

And lower rpm right.

Well RPM is only relative to the finish on the crank shaft. RPM eats seals when they get dry or melts them from excessive heat and barely any lube like sheilded bearings. Four cylinder case pulses increase like in Harley Vtwin. Not sure if they have spring backed seals in all of those. I'm sure the new stuff does. Seal updates are always a winner.

 

[HansFranz]

Funny, this video literally popped up in my youtube feed this morning. Now I come here, and here it is again lol.