Stihl FS80: Say Goodbye?

[toolmaker]

I have an FS80 that I bought.......don't remember how long ago. Probably at least 20 years.
It's been a good machine, I have a few different attachments for it, and it always enjoyed using it and it always did what I asked of it.

It started pulling this crap where I would need to adjust the carb to get it to run, than after it warmed up, adjust the carb again to get it to run high rpm. After it would cool off, same crap again.

New OEM carb in 2024

Now same crap again.

Now I can throw another carb on it again and risk the same scenario, or, get an FS70 or FS91R.

If my attachments will fit either one of those new machines, the answer is probably obvious.

Part of the problem is that I have a new/un-opened solid driveshaft for the FS80.

Your thoughts?

 

[EFSM]

I doubt you will get 25 years out of a 70, and I’d be surprised if you like the weight of a 91.
Check for air leaks on the 80, especially a loose or leaking/cracked intake block.

 

[toolmaker]

Well, at 64 I don't think I will be needing 25 years out of any new yard equipment.
How do "I look for a cracked intaake block?

 

[Sloughfoot]

Well, at 64 I don't think I will be needing 25 years out of any new yard equipment.
How do "I look for a cracked intaake block?

Get it running and spray the intake block with brake cleaner or any aerosol lubricant or solvent you've got at hand. It'll studder or die where there's a leak.

 

[Squareground3691]

My FS80 going on 28 years, and still running great, put a new carb on it 2 years ago, they don't make them little 2T like that anymore,