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Pilot screw size

Started by 1NorthRyder, Sat 02, Mar 2019, 10:44:51

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1NorthRyder

I need to replace my pilot screws as the ends a slightly buggered up and not easy to turn. I have had trouble finding out what the correct size is. The bike is a 2000 Interstate. I believe the correct OEM size is 35mm and some folks have increased the size to 38mm. I,ve googled it but haven,t found a clear answer. Thanks in advance for your help.

1NorthRyder

Been reading more and believe I am wrong (yes I am man enough  to admit it, but don't tell my wife) about the size, the 35 & 38mm I believe are the jets. I just want the screw, spring and washer that you lightly seat and then turn bake about 2 turns.

mark81

The pilot screw is not a jet so that may be some of your confusion.


https://www.partzilla.com/product/honda/16016-MAS-670?ref=4f689702f5326aabebc627ea30468c281d13ef67

This is what you need
1997 Honda Valkyrie
1981 Honda CB750 Custom

1NorthRyder

Thanks Mark, I found that part # just before you posted so all is good as long as I can get them delivered quickly.

rug_burn

Guys-  help me out here a little-  are you discussing those screws on the carbs that adjust the main needle mixture?   

On my '97 the heads are circular with a kind of small flat, like a d-shape,  i think they were changed later.  That's what you're talking about, correct?   How do you turn these to adjust them with the carb on the bike?   Is there a tool for that?     

I made a tool to turn mine, and set all the carbs a little leaner than they were (about 1/8 turn) because the exhaust always smelled a little rich, but just how do you adjust those inaccessible screws without pulling all the carbs?
...insert hip saying here..

Forge

My oem D screws were badly rounded so I replaced them with the K&L slotted screws.

John Schmidt

When I pulled my carbs to clean some years ago, I used a Dremel tool with a cutting blade and turned them into something I could adjust with a flat blade screwdriver. Just don't hold them with bare fingers while cutting....unless you like blistered fingers.  ;)

1NorthRyder

Quote from: rug_burn on Sat 02, Mar 2019, 15:46:19
Guys-  help me out here a little-  are you discussing those screws on the carbs that adjust the main needle mixture?   

On my '97 the heads are circular with a kind of small flat, like a d-shape,  i think they were changed later.  That's what you're talking about, correct?   How do you turn these to adjust them with the carb on the bike?   Is there a tool for that?     

I made a tool to turn mine, and set all the carbs a little leaner than they were (about 1/8 turn) because the exhaust always smelled a little rich, but just how do you adjust those inaccessible screws without pulling all the carbs?

Yup, those are the ones. There is a tool from Motion Pro for adjusting when on the bike but still a pain in the ass.

98valk

honda uses those screws on many of their carb bikes

honda tool to get, it was org listed for the cbr900.

it has a flexible spring head. been using it for yrs.

07MMA-MT3010B WRENCH PILOT SCREW
1998 Std/Tourer, 2007 DR200SE, 1981 CB900C  10speed
1973 Duster 340 4-speed rare A/C, 2001 F250 4x4 7.3L, 6sp

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