STIHL The Official Stihl Chainsaws Thread

[Maintenance Chief]

Howdy Studs,

Here's my slight issue:
I just picked up a nice 034 that runs strong yet I've got a couple things that need addressing.
1. Every time I tighten the chain by the tensioner screw---when I fire it up---the chain goes loose again. I can't keep it tight!
2. also, ze chain keeps spinning when I take the chain brake off(maybe sprocket)?

Easy fix?

Thanks

Reg

Sounds like one of the clutch spings might be wore out or broke and the clutch bearing smoked.

 

[CrystalRiver1]

Sounds like one of the clutch spings might be wore out or broke and the clutch bearing smoked.

Much obliged MC!
BTW...its got the old school tensioner like this....
Can I swap it for the newer version that tightens yer chain between the bar studs?
I believe what I've got is stripped...chain keeps coming loose after firing it up...

 

[CrystalRiver1]

Do you pull the chain around the bar by hand a few times after tightening the nuts down? Also if rim or drum sprocket is warm it can cause the chain to go loose/tight/loose as it gos around the bar. Chain moving at idle could be anything from to high and idles speed because of carb adjustment, LA screw being set to high, minor air leak leaning mixture or weak/broken clutch springs.

Mighty good counsel...much obliged.
Checking into it now

 

[SawAddictedFarmer]

 

[SawAddictedFarmer]

How does this look? Pulled it out of a 362 I had been having a hard time with until a couple members set me straight on tuning in the cut.

 

[jacktheripper]

Looks good to me. Could maybe go even a bit leaner, but it’s a safe color.

 

[FergusonTO35]

View attachment 475092View attachment 475093

Dark coffee brown color on the electrodes with modest fouling is what I always shoot for on an oil burner so looks good to me!

 

[SawAddictedFarmer]

Dark coffee brown color on the electrodes with modest fouling is what I always shoot for on an oil burner so looks good to me!

What's coffee? That disgusting liquid my boss drinks? I drink tea.

 

[lehman live edge slab]

What's coffee? That disgusting liquid my boss drinks? I drink tea.

Coffee is good

 

[59billy]

What's coffee? That disgusting liquid my boss drinks? I drink tea.

Coffee is what tea wants to be when it grows up.

 

[jacob j.]

Much obliged MC!
BTW...its got the old school tensioner like this....
Can I swap it for the newer version that tightens yer chain between the bar studs?
I believe what I've got is stripped...chain keeps coming loose after firing it up...
View attachment 475007

Can you post a picture of your crankcase in the bar pad area? It depends on which crankcase as to whether you can convert to the side-access tensioner.

 

[CrystalRiver1]

Can you post a picture of your crankcase in the bar pad area? It depends on which crankcase as to whether you can convert to the side-access tensioner.

Jacob, I most certainly would, except I have sent it sailing to Stump Shots Shop fer some repairs and modding.
I got my hands full tending to my 91 yr old Pa currently...
I appreciate the feedback though!