stihl 034 leaks while stored

[Twowithone]

Hope you found it and its fixed for good.

Pretty sure it was the hose coming off the pump it was barely on fixed that problem Ill keep an eye on it and make sure. Thx for your input on my saw.

 

[BuckthornBonnie]

I think I found the leak. To begin with Im no small engine guy the most I ever did to my saws was clean filters or replace them, clean the bar and sharpen the blades fill em up and go.Like I said in earlier post I took it to a Sthil dealer and they couldnt find the leak. So I went to utube and watched videos on the Sthil 034av took it apart all the way down to the oil pump. The hose that comes off the oil pump to the oiler hole was barely on the pump itself That might explain the bar oil on the outside of the clutch cover. Got a can of carb cleaner cleaned the whole oilpump area it looks new put the line back on all the way down to the stop ran it no oil coming up on clutch cover shut it down and wanted to see how much oil leaked not running, checked it today got oil on the cardboard the size of a quarter. Im real happy with the results for never attempting this and no extra parts left over. Thanks for all the replys on my saw.

Yep, common issue on this series. The OEM line is typically hard and doesn’t easily come off the pump. It can still fail, though. Tygon (yellow) or other generic fuel line isn’t recommended. If your line was replaced with something like that then it may happen again. I’ve had success with a piece of Stihl fuel line and a spring, but OEM is best for most circumstances. Any sign of the clutch drum rubbing on anything? Needle bearing still look ok?

 

[Twowithone]

Yep, common issue on this series. The OEM line is typically hard and doesn’t easily come off the pump. It can still fail, though. Tygon (yellow) or other generic fuel line isn’t recommended. If your line was replaced with something like that then it may happen again. I’ve had success with a piece of Stihl fuel line and a spring, but OEM is best for most circumstances. Any sign of the clutch drum rubbing on anything? Needle bearing still look ok?

Needle bearing and clutch drum look ok cleaned drum up with carb cleaner worm gear looks good Ill keep a good eye on it.

 

[pioneerguy600]

I think I found the leak. To begin with Im no small engine guy the most I ever did to my saws was clean filters or replace them, clean the bar and sharpen the blades fill em up and go.Like I said in earlier post I took it to a Sthil dealer and they couldnt find the leak. So I went to utube and watched videos on the Sthil 034av took it apart all the way down to the oil pump. The hose that comes off the oil pump to the oiler hole was barely on the pump itself That might explain the bar oil on the outside of the clutch cover. Got a can of carb cleaner cleaned the whole oilpump area it looks new put the line back on all the way down to the stop ran it no oil coming up on clutch cover shut it down and wanted to see how much oil leaked not running, checked it today got oil on the cardboard the size of a quarter. Im real happy with the results for never attempting this and no extra parts left over. Thanks for all the replys on my saw.

If I read your post correctly the hose is supposed to go on over that rib in the steel pipe/nipple, the bit you referred to as a ,stop. If using an OEM hose it will take a set around that rib and never come off easily.

 

[Twowithone]

If I read your post correctly the hose is supposed to go on over that rib in the steel pipe/nipple, the bit you referred to as a ,stop. If using an OEM hose it will take a set around that rib and never come off easily.

The little pipe coming off the oil pump is not a straight piece it looks like a pellet you would put in a bb gun it has flanges on it. My hose was just sitting on top it was not pushed down on this pipe. It could have come off through vibrations I dont know but Ill keep an eye on it. I dont know if this hose is the original or a replacement dont know.

 

[pioneerguy600]

The little pipe coming off the oil pump is not a straight piece it looks like a pellet you would put in a bb gun it has flanges on it. My hose was just sitting on top it was not pushed down on this pipe. It could have come off through vibrations I dont know but Ill keep an eye on it. I dont know if this hose is the original or a replacement dont know.

Like this one? I can see what you called a , stop.

 

[Twowithone]

Like this one? I can see what you called a , stop.

Thats it pioneerguy600 the hose was barely on top of the first flange in this picture. Now it pushed down to that stop below the 2nd flange

 

[pioneerguy600]

The two barbs above the stop should hold the line in place, if it slips off again the line is too soft or flexible, lets hope the existing line stays put.

 

[Twowithone]

The two barbs above the stop should hold the line in place, if it slips off again the line is too soft or flexible, lets hope the existing line stays put.

Yes will be watching it like a hawk.

 

[Footsie80]

Like this one? I can see what you called a , stop.

It’s supposed to butt up against this protruding disc once you get it over the second barb. I’ve had to replace the line on both my (new to me) 034 and 036 pro because the line has burned through exposing the spring that prevents the line from kinking.