Stihl 044 Pressure/Vac Leak (O-ring?)

[dall]

Is the bushing available new?

@Canadian farm boy bought one not too long ago

 

[huskihl]

Ddave has them. Or had

 

[Funky sawman]

Those bushens are expensive little bastards

 

[huskihl]

Aftermarket, but they work fine


https://rover.ebay.com/rover/0/0/0?mpre=https://www.ebay.com/ulk/itm/322067981838

 

[qurotro]

I didn't even see this o ring in MS440 service manual..? 372xp is famous for this..

 

[10/80]

The early 10mm 044 has the O ring for sure, also listed in early version of 1128 IPL.

 

[Canadian farm boy]

I’ve never bothered with the oring. Once the clutch is on and tight everything get sandwiched tight.

 

[Mike Whitmore]

On the original the o ring was on the outside where the oiler mechanism sits down on the spacer..not on the inside

 

[Mike Whitmore]

Just had same issue on mine... bottom picture is no magnification...and crack is in the top of the shine nearest my hand...barely visible... the top pic is the crack magnified by iphone camera..everytime i tightened down the clutch i could hear the air escaping...found the reason it burned the piston..

 

[MustangMike]

I just make sure I really grease the inside of the bushing well to help preclude any leaking.

 

[huskihl]

View attachment 186929 View attachment 186930

Just had same issue on mine... bottom picture is no magnification...and crack is in the top of the shine nearest my hand...barely visible... the top pic is the crack magnified by iphone camera..everytime i tightened down the clutch i could hear the air escaping...found the reason it burned the piston..

The o ring was supposed to go on the crank before the bushing

 

[dall]

View attachment 186929 View attachment 186930

Just had same issue on mine... bottom picture is no magnification...and crack is in the top of the shine nearest my hand...barely visible... the top pic is the crack magnified by iphone camera..everytime i tightened down the clutch i could hear the air escaping...found the reason it burned the piston..

that happens when you tighten the clutch down too much