1989 Yamaha Razz Build "Red Dead Redemption"

[slimpickins11]

Starting this Thread on the advice of Zino!
1989 Yamaha Razz Scooter that I pick up around at a garage sale. Story is it was the ladies husbands and he loved it but he passed away around 2016 and its been sitting. Would not run when throttle is applied so as all the info and pictures in this post 49ccscoot.proboards.com/thread/30185/another-1989-yamma-razz-problem go we are gonna try our best to get this thing back in scooting shape. It's the first Carb scooter I've owned so everything is kind new and I'm clueless on a lot but willing to learn.

Current Problem needing addressed: Air intake is way to open. I have the box but no foam to go in it and not sure if that will work as Zino pointed out that's a bigger carb than stock so might have to find something else for now for air flow restriction 

Auto choke mechanism is not wired in and I have no idea where it would be wired in at so I need help there. Its not a connector style plug its two open ends that have a small metal shim like they just get shoved up in to something already wired.

[Zino]

Try fitting airbox on the end of the carb .
The form inserts are easy enough to come by if it will fit .

Looks like a dellorto knock off type carb.
Could you post a picture of the main jet in the carb .
So we can see compare it to this site .
www.jetsrus.com/FAQs/FAQ_identify_that_jet.htm

A hose comes off the carb just above the idle speed screw
Where does it go ?

Here are some carb tuning resources from the links on the left side of screen
www.49ccscoot.com/faq/carbtune.html
www.49ccscoot.com/manuals/DellOrto_Info_And_Tuning_Manual.pdf

I would clean off the grime off the engine /transmission /around the exhaust .
So we can Look for leaks and where stuff connects up .

As far as autochoke being stuck open we can work around that for now you just will be alot richer at all throttle positions .

Here is how a autochoke works
49ccscoot.proboards.com/thread/4954

[slimpickins11]

That seems to be where the oil comes in to mix, ran out to get another spark plug for it so I'll trace it here in a few minutes to confirm

[slimpickins11]

[Zino]

Good oil is hooked up .
Unscrew that bigger jet that is the one that would tell us what carb jet it needs .

It also will give us a reference point of what jet you are at so we can go up or down from there .

[slimpickins11]

[slimpickins11]

Work had me busy sorry for not replying forever, we actually had it running with restricting the air flow that went in to the carb, and we could get it to 20mph but it was running rough and we kept having to mess with the idle set screw though out the 40 mins we had it going. It's since gone back to the original problem.

None of the jets are numbered so don't know the size of any.

[Lucass2T]

It's a TK (or Teikei in full) carb. It's a common carb on 90's Yamaha's. My Axis has one too, a 14mm. They also take dellorto 6mm jets.

On a stock Razz i'd start with a size 60. Just order the 6mm dellorto ones since I assume Teikei jets are gonna be harder to find. You can try starting it while holding your hand over the carb. That way you choke it from air, basically creating a rich condition just like the auto enricher does.

When it fires up and it idles, you can slowly remove your hand.

[slimpickins11]

Just to make sure I have the right part its this one in 60 www.doscycles.com/products/dellorto-6mm-main-jet-3?variant=30986019733606 . and just plug it in and try it? none of the other one need to be replaced?

[geoffh]

Yes the jet looks good but consider buying a kit like this
I am UK based so no reasonable link but it will help to fine tune your scoot

 Geoff