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spudulike

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Had a farmboss on the bench not running. The high low screws were unscrewed all the way, re adjust runs like a dream, compression down a bit on 130 but for the use it will get not a major concern.

 

Had a solo top handle on as well, non runner, fuel lines all shot so replaced them, she runs but won't tick over well seems to hunt a bit, and dies when throttle up. Haven't adjusted screws yet as I don't know what the factory setting is for it? Anyone have an idea, make my life a bit easy instead of trying to get it for hours?

 

Sounds like breather or air-leak issues - try starting it and loosening up the fuel cap and see if that helps otherwise, if you have the kit, do a pressure and vac check as it can save hours of messing around.

 

If the saw holds on to its revvs when releasing the throttle, it is the breather or the L screw needs turning anti clockwise 1/4 turn.

 

Good luck

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Yeah replaced the fuel lines tank breather line and the impulse line is good so no touch. Turning the screws tomoz. Just didn't know the factory settings.

 

It's an old saw with no chain break so the chain is off as I don't fancy cutting my arm off. Compression is smack on 100 psi, worth a go just to see if it works ok.

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Yeah replaced the fuel lines tank breather line and the impulse line is good so no touch. Turning the screws tomoz. Just didn't know the factory settings.

 

It's an old saw with no chain break so the chain is off as I don't fancy cutting my arm off. Compression is smack on 100 psi, worth a go just to see if it works ok.

 

100psi sounds a bit low but compression gauges vary and can depend a bit on the size of the engine. pull the plug and get get a light down the bore to look at the exhaust port bore area if the plughole angles toward it and look for any scores.

 

I know running a bit lean on the L screw can stop the revs falling down to proper idle making them stay a little high for a while - hunting or a varying idle speed sounds a little different. See what the carb is set to but the vast majority of carbs ae set to 1+1 turn L & H screw.

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