Stihl FS80 carburators?

[EKOSMUS]

I do to. I am anxious to see if it still runs tonight.

 

[mtnpapa]

I have done every bit of that. I fixed it last night. The needle that gets pressed when you press the tickler button has a check valve behind it. I drilled it out and soldered the hole shut. it was sucking air. runs good now

I have a green machine 2500 with the TK carb. It is doing the same thing... have to press the tickler and hold it to get it to run. Could you be more specific as to what you drilled out and soldered shut. I think mine is sucking air instead of gas somewhere.

 

[Fish]

If you can just plug the hose that drains the excess fuel and not let air go back into the carb, you will be OK. The Stihl/Shindaiwa/Green Machines, all had different variations, but air sucking back into the carb from the drain was common with
most of them....

 

[EKOSMUS]

It ran great the next day. Fish is right i did not have to do so much. Just plug the overflow hole. I actually have 2 of these machines both were my grandfathers. The other carb does the same thing as this carb but dies when I cover the overflow tube. Does not get any fuel unles I pump it. I have not got around to working on it yet. I think it is the fuel pump on this one. I will have to get another rebuild kit from fish and start over. But right now I am catching up on weedeating.

 

[Fish]

Yeah, I dug around the shop, but could only come up with an old Shindaiwa tk carb. Which is a little different on the drain setup.

 

[mtnpapa]

If you can just plug the hose that drains the excess fuel and not let air go back into the carb, you will be OK. The Stihl/Shindaiwa/Green Machines, all had different variations, but air sucking back into the carb from the drain was common with
most of them....

Thanks for the tip. Makes sense to me. I'll give it a try and let you know if it fixed it. I'm wondering if that was the thing that the other guy soldered shut to solve his problem?

 

[EKOSMUS]

if yoU take the diaphram off of your weedeater , where the tickler button is. Right in the middle is a needle. I drilled the needle out and soldered it there. At the time i did not know that was a a check valve for the overflow. If i would have known I would have just plugged the hole that fish is talking about. Somehow I always do things the hard way.

 

[mtnpapa]

if yoU take the diaphram off of your weedeater , where the tickler button is. Right in the middle is a needle. I drilled the needle out and soldered it there. At the time i did not know that was a a check valve for the overflow. If i would have known I would have just plugged the hole that fish is talking about. Somehow I always do things the hard way.

Thanks for taking the time to reply.... at least you got er done:smile:

 

[mtnpapa]

Thanks for the tip. Makes sense to me. I'll give it a try and let you know if it fixed it. I'm wondering if that was the thing that the other guy soldered shut to solve his problem?

I tried plugging it up and it still didn't work. I'm just going to buy another weedeater.... Thanks for your help!

 

[Kbota]

I have an FS80 that I purchased new in about 1997. It's been in the shop twice. Both times due to not draining the fuel out during winter storage. The last time I picked it up from the Stihl dealer, the mechanic brought it out to me himself. He had replaced the entire carb. The total bill was $70. I found one of his comments interesting. First, he gave me advice about storing it, second he said that the FS80 was absolutely one of the best weedeaters ever made, and that if I simply drained the fuel from the tank, and then ran it until the carb was empty, this thing would last forever. He also commented that the newer Stihls weren't the same quality.
Most of this was nothing but his opinion, but he made a lot of sense.

By the way, this trimmer must have many hundreds of hours on it, and still runs like a top. I used it for an hour today.

K