? about "seating" the pilot screw


5 replies to this topic
  • PAKDXYZ

Posted January 22, 2010 - 02:46 PM

#1

Just got one of the extended pilot screws for my 426. The pilot screw I took out was missing the little rubber o-ring at the end of it. I am assuming this is what allowed it turn rather easily untill bottoming out. My question is this, when reading about doing the Initial pilot screw setting before fine tuning it says turn the screw in until it lightly seats then turn out your 1 1/4 to 2 turns. Does lightly seat mean when it bottoms out or when you first feel some pressure when turning the screw. This new screw has a totally different feel with the correct o-ring in place and just wanted to double check.
Thanks

  • cowboyona426

Posted January 22, 2010 - 03:20 PM

#2

Lightly seated means bottomed out, but without getting all Hercules trying to get it REALLY bottomed out.

  • cwcarter

Posted January 22, 2010 - 03:22 PM

#3

Screw it all the way in until it bottoms out. Don't force it though.

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  • ectm3

Posted January 22, 2010 - 05:59 PM

#4

When i change out my fuel screw i like to stretch the spring a bit,but be careful to leave room on the screw for the 'o' ring and washer.You always hear about fuel screws falling out,this will help keep pressure on the fuel screw and keep it from spinning freely.Just a friendly tip rider to rider.

  • AZ Thumpdaddy

Posted January 22, 2010 - 08:28 PM

#5

Just got one of the extended pilot screws for my 426. The pilot screw I took out was missing the little rubber o-ring at the end of it. I am assuming this is what allowed it turn rather easily untill bottoming out. My question is this, when reading about doing the Initial pilot screw setting before fine tuning it says turn the screw in until it lightly seats then turn out your 1 1/4 to 2 turns. Does lightly seat mean when it bottoms out or when you first feel some pressure when turning the screw. This new screw has a totally different feel with the correct o-ring in place and just wanted to double check.
Thanks


Sometimes the oring will stay up inside the carb and not come out with the fuel screw. A dental pick tool will get it out. Maybe you are running 2 of them now?

  • PAKDXYZ

Posted January 22, 2010 - 10:20 PM

#6

Sometimes the oring will stay up inside the carb and not come out with the fuel screw. A dental pick tool will get it out. Maybe you are running 2 of them now?


No, I thought the same thing but there was nothing up in there.





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