stihl fs 66 string trimmer with problems


Old 09-20-12, 07:07 PM
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Join Date: May 2010
Location: usa
Posts: 21
stihl fs 66 string trimmer with problems

Hi everyone I just bought a used stihl fs 66 string trimmer with a few problems. First the trimmer looks like in a few spots that its been ran over as the fuel tank has a small crack on top and the other side support of the tank is broke off. I'm fine for now with the support broke but the crack is leaking.

Second the throttle cable was broken an inch above the adjustment nuts by the carb end. So I replaced the entire cable with an throttle cable from a bicycle and it fits fine but now the cable does not retract after being pulled.I'm not sure If its the plastic tube the cable is in or the spring on the carb. Could this be fixed with another spring or do I have to buy a new assembly from stihl?

After all this and having to clean the carb to get it going i'm starting to think If it's worth it or not.
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Old 09-21-12, 07:10 AM
Join Date: May 2006
Location: Iowa!!!!!
Posts: 3,728
The retracting strength of the stuff on a bicycle would be a lot stronger that that on the trimmer. You're better off on that subject with the Stihl replacement parts. Still you have the gas tank leaking which could be sealed with some tank sealant for automotive tanks from an auto parts store. That may take care of that problem.

All in all, unless they paid you to take the trimmer, you may be behind on the deal.
Old 09-21-12, 08:08 PM
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Join Date: May 2010
Location: usa
Posts: 21
Is there a specific brand that you could recommend for the tank sealant?
Old 09-21-12, 11:59 PM
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Join Date: Jul 2001
Location: USA
Posts: 16,819
I never had much luck using any kind of glue/resin sealant to repair plastic tanks. Pick up a used one on ebay or whatever it takes to replace it IMO.

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