PILOT SCREW

[jammer]

Bike started running bad.  On inspection  I found #4 pilot screw laying on the  engine deck.  Could not tell if there was an O'ring inside.  Replaced pilot screw, bike is running good.


G

[Thunderbolt]

if that had been me, the pilot screw would be nowhere to be found.  You found it and that fixed the problem.....like I said.  That was good luck.

[HayHauler]

Jammer, go down and buy a lottery ticket RIGHT NOW!!!  You, are the luckiest man alive...  well almost..



Hay 

[Ricky-D]

How long before it falls out again?

Did you not do anything but put it back.  How many turns?

[jammer]

I rode back over 50 miles after the bike started acting up.  The pilot screw,  the tiny washer  & spring  seperated, were all lying on the engine deck  in various locations.  I replaced it, turned pilot screw in until it seated, then backed  it out 2 1/2 turns.

     The bike is desmogged so there is not much clutter there.  I could not tell with a mirror if there was an O'ring still in the pilot hole. 

     Guess I will have to keep an eye out.

G

[Ricky-D]

You can get a set of six o-rings from "redeye' on E-Bay. I think about twelve bucks.

You need the o-ring to help keep the screw from turning out. The spring is an additional help for the same reason.

I think the current wisdom is about 1-1/2 to 1-3/4 turns on the screw.

[John U.]

The recommended 1 1/2 to 1 3/4 out from lightly seated is for carbs with 38 slow jets. I believe the recommended setting for the oem 35 slows is 2 1/4 to 2 1/2 turns out.

[BonS]

I recently changed to 38's on my 99 IS where the slow jets had never been touched since new and they were all 2 turns out. I just set them to 1.5 turns but haven't given it a test ride yet. Two turns with the 38's was definitely too rich.