RD350 Carb Tops and Cables

[Diablo007]

I was trying to find the correct cables for the RD350 on the bench and realized that even though I have mostly the short slide carburetors I only have one set of cables that works with them.  When I went through the carbs to try to find long slides and tops I realized that I have two different tops for the short slides, one with the cable holder that screws into the top, and ones that have the longer bent swivel tube on them with the adjuster at the end of the tube.  I'm guessing that's why I have cables that appear to be for long slides, the difference in length from the cable holder to the slide.  I'm hoping I'm making sense as I don't want to dig out the parts right now to take pictures.

My question is; are both tops correct for the RD350?  Just curious.  As long as they work that's all that matters to me.  The bike was a bitsa when I got it and will remain one.  I just want to ride it.

[quocle603]

Slides need to correspond with the tops. Get the short ones, easier to tune your carbs needle position on the go without unscrewing the stinking retainer to the slide.

When you say top you're talking about the cap/top and not the brass throttle cable adjustment  for syncing your carbs??

[rodneya]

Yes, there are two different types of low top carb tops. I did not know this until I looked at HVC website for throttle cables.
The low top with the long curved adjuster and the high tops use the same cable.

[Diablo007]

Thanks!

I had taken photos and was going to post them.  I guess I will anyway as it's a side by side comparison.  Thought I had high-tops too, guess they're somewhere else.  I really need to organize my parts....

[quocle603]

Those are both low top carb caps. Your slides should be a lot shorter than the tall top caps. :)

Econ has good references. https://www.economycycle.com/shop/yamaha-rd250350400r5ds6ds7-parts/frame-related/controls-cables-handlebars-related/cables/yamaha-rd350-rd250-throttle-cable-assembly-high-top-carbs/

[350GUY]

Thanks!

I had taken photos and was going to post them.  I guess I will anyway as it's a side by side comparison.  Thought I had high-tops too, guess they're somewhere else.  I really need to organize my parts....

Can someone please confirm if the brass cable guide in the above picture, along with the adjuster (basically the entire unit along with the c-clip lock) is interchangeable/work on the high top carb? Thanks!

[Striker1423]

I have high top carbs with the long bent tube on my bike. I never changed them out or anything.

[m in sc]

ill be honest,  never saw lo tops w the long adjusters. Just tall tops w the lomg adjusters held in w the c clips. but i can believe it. weird

[quocle603]

Wow this was an old thread, I have never seen them like that as well. Are you seeking that angled tube guide for your bike?

[SoCal250]

Pretty sure the cable guides are interchangeable with the two types of tops. The Technical Bulletin from Yamaha regarding the change shows the long guides on both versions. In addition, the parts change list does not specify a need to change guides with the new high tops.

[350GUY]

Thanks guys. I bought a pair of high top carbs off fleebay and unfortunately they did not have the cable guide on them. I just wanted to make sure that they are interchangeable. The above tech. bulletin confirms that they are the same. Thank you  SoCal250 for sharing and the rest for your input, much appreciated. I see that the RZ350 carbs have a similar cable guide fitment on them.

[SDDaytona]

Thanks guys. I bought a pair of high top carbs off fleebay and unfortunately they did not have the cable guide on them. I just wanted to make sure that they are interchangeable. The above tech. bulletin confirms that they are the same. Thank you  SoCal250 for sharing and the rest for your input, much appreciated. I see that the RZ350 carbs have a similar cable guide fitment on them.

Vespa Motorsport in San Diego has some angled guides. Give them a look

[350GUY]

Thanks guys. I bought a pair of high top carbs off fleebay and unfortunately they did not have the cable guide on them. I just wanted to make sure that they are interchangeable. The above tech. bulletin confirms that they are the same. Thank you  SoCal250 for sharing and the rest for your input, much appreciated. I see that the RZ350 carbs have a similar cable guide fitment on them.

Vespa Motorsport in San Diego has some angled guides. Give them a look

Thanks very much SDDaytona. I'll give them a shout.