pilot screw needs 3&1/4 turns?

Post by **Davez29** » Fri Apr 17, 2015 7:35 am

Hi, I have had a recent problem with my tickover where one cylinder seemed to be missing and tickover was erratic. I decided to clean my carbs and indeed cylinder 4 jets were blocked. The pilot screws were set at the standard 2 1/4 turns as only this one cylinder was causing problems i thought there would be no need to deviate from this setting. Now it appears the bike won't tickover smoothly unless ALL pilot screws are one turn out more at 3 1/4 turns (richer). Not sure what's doing this. Can't find any air leaks and the bike seems fine at these settings. but I find it very odd.

Any ideas?

I have sent for a new carb gasket set from the seller on here just in case its the pilot screw gaskets but would still like opinions if possible as I'm no expert.

Dave

dunkenb · Post by **dunkenb** » Sat Apr 18, 2015 5:13 pm

I had a similar problem and it was the pilot screw O-ring had perished

gullarm · Post by **gullarm** » Sat Apr 18, 2015 7:02 pm

How did you alter the pilot screws - with carbs on or off the bike.

I cant see any way of altering them when the carbs are fitted? Or am I being a bit thick!

Post by **Davez29** » Sun Apr 19, 2015 8:29 am

Thanks for the info I will await my new gasket set and see if I can regain normal settings.

Sadly its carbs off and on every time repeatadly, a real pain, and not the best method if your trying to feather your adjustments.. Although on carb 1 I can just about do it with the carbs attached and engine running using a 250mm screwdriver and inserting it upwards from the front sprocket cover area. I think some sort of bendy driver and small hands are needed. The bike is still not 100% as at work this morning in the cold air it still seemed a bit stuttery and I blipped the throttle from tickover and it stalled although tickover is generally smoother.

Dave

Post by **Davez29** » Sun Apr 26, 2015 3:56 pm

Hi, just a update on my problem, it seems it was those gaskets after all, as I changed them and set to a standard 2-1/4 turns. Now its now back to normal, at last. The old gaskets were a lot flatter than the new ones and I had my suspicion it was them but until you change them its hard to prove.

Thanks to LiteTek for the gaskets at a competitive price.

pilot screw needs 3&1/4 turns?

pilot screw needs 3&1/4 turns?

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Re: pilot screw needs 3&1/4 turns?