Pilot fuel air mixture screw 16016MZ2E00

[Knapdog]

I have, in the past, cut slots in the "D" shaped Pilot screws for ease of removal.
Some slots are not dead centre and I have made a bit of a mess of one of them but that doesn't really matter as I can adjust them all on the bench.
The part number is 16016MZ2E00 and it looks as if all the new ones have "Phillips" slots on the heads.
In the UK, from Honda dealers, inc spring and washers, they're around £22 each, so replacing six of them is not worth it.
I can get pattern replacements for just under £10 each.
Now, all the screws I have are working.  None have broken tips. The only reason for changing would be to have nice clean heads.
My guess is that your advice would be to leave things as they are. I'm tempted to go for the pattern parts but I'm curious to know if anyone has had any experience of them. I usually stay well clear and nearly always go for oem but won't be paying £130 for six screws.
Any advice welcome.

[-mike-]

How about these:



Standard size for Keihin Carbs the size of our Valkyries.
You may buy one for test, though.

-mike-

[Knapdog]

How about these:



Standard size for Keihin Carbs the size of our Valkyries.
You may buy one for test, though.

-mike-

I like the idea of the easy adjustable length but isn't the needle tip much shorter than the oem's?

[98valk]

get this tool, I've been using it for yrs works great.

https://www.partzilla.com/product/honda/07MMA-MT3010B?msclkid=3535961d166d1828ba11f2e0d11aeb0d&utm_source=bing&utm_medium=cpc&utm_campaign=TNT_Shopping%20-%20Standard%20-%20All&utm_term=4580909047243610&utm_content=Standard%20Products

[98valk]

u have the wrong part #.

this is what u need

https://www.partzilla.com/product/honda/16016-MAS-670?ref=f04940bce1a8b826d5733d65b05b94b40d83f5c9

[Knapdog]

get this tool, I've been using it for yrs works great.

https://www.partzilla.com/product/honda/07MMA-MT3010B?msclkid=3535961d166d1828ba11f2e0d11aeb0d&utm_source=bing&utm_medium=cpc&utm_campaign=TNT_Shopping%20-%20Standard%20-%20All&utm_term=4580909047243610&utm_content=Standard%20Products

I've got that, thanks, but my slot sawing has rendered it useless.

[Knapdog]

u have the wrong part #.

this is what u need

https://www.partzilla.com/product/honda/16016-MAS-670?ref=f04940bce1a8b826d5733d65b05b94b40d83f5c9

Thanks.
The part number I quoted was on the csmnl site, showing the fiche part number.
Yours is better for me as I have the tool for the "D" screw.
However  this one is even more expensive at £25 per screw.

[98valk]

since its used for other honda models check ebay for parts strippers selling carb parts. u should be able to find them at a lower cost.

https://www.ebay.com/sch/i.html?_from=R40&_trksid=p4432023.m570.l1313&_nkw=16016-MAS-670+&_sacat=0

4 for $12 one i.e.

[-mike-]

How about these:

Standard size for Keihin Carbs the size of our Valkyries.
You may buy one for test, though.

-mike-

I like the idea of the easy adjustable length but isn't the needle tip much shorter than the oem's?

You may be right.

This particular kit has fitting mixture screws.
I'm using this kit for fellows that can't spend the money for OEM parts.
Especially after red-eye is out of business and the All Balls kit is the very same repacked Chinese kit

Up to today none of my fellow riders had issues with it.
I wouldn't bet my life the nitrile orings last 20 years, though.
So take what you need from it and discard the rest.

https://a.aliexpress.com/_EwFWBZN

I use this screwdriver for all carb setting  work.



-mike-

[RonW]

I have, in the past, cut slots in the "D" shaped Pilot screws for ease of removal.

• Some slots are not dead centre and I have made a bit of a mess of one of them

Just asking but are you starting the cut for the pilot screw on the zinc alloy spout (red below)?

[The emperor has no clothes]

I have, in the past, cut slots in the "D" shaped Pilot screws for ease of removal.

• Some slots are not dead centre and I have made a bit of a mess of one of them

Just asking but are you starting the cut for the pilot screw on the zinc alloy spout (red below)?

I've not slotted mine. But that seems like a hard, possibly ruiness way to do them. Wouldn't it be a lot better to remove each pilot jet and do them on a bench ?

[RonW]

Specifically starting a kerf on brass with a hacksaw ain't the easiest thing. Even if you clamp the pilot screw in a vice, a hacksaw blade will wander or skip around on the brass surface. A grinder with a metal cut off blade 1/16-in would work but you need a grinder and the metal cut off disc. Of course you'll still working off a small footprint. Maybe you could start an accurate kerf with a file going little by little?? The zinc alloy spout for the pilot screw is used as a makeshift saw guide like a sawbox.

The disadvantage is making sure fine metal particles don't fall inside where it shouldn't. To that end the pilot screw has to be turned down until it bottoms out but that position also keeps a tight pilot screw from wiggling around when sawing the kerf. And yea, you'll have to use a few cans of brake cleaner.

https://youtu.be/J8gXnaJr2J0?si=0nLCrDHvLv4Tyq_Y&t=564 (I've advanced the video, but there's still a 5-second advertisement.)

I also haven't slotted mines either mainly because I never liked removing the carburetor rack.

[rug_burn]

     The operation of those diaphragms and needles is still a little unclear to me... but admittedly, they do work good, as a general rule.   
     Makes me wish we had fuel injection.