Thread: How to take off throttle grip on 69 z-50, carb issue?

What is the best method for taking off the grip to get the throttle cable out? My original cable seems to not let the valve slide in the carb, close completely....doesn't make any sense to me, as it looks to be original, and it seems to opererate fairly smooth. The valve is orientated properly...just don't get it. I replaced all the carb internals and cant seem to get the engine to stop reving. I look in the carb when its not installed on the manifold and it looks to have the slide down in position, but when I move it up to put on the manifold, its moving up.... Hmmm

Could someone help me with a couple questions?
I have a clymers manual coming, so maybe that will help with a little, but I appreciate your help.

What groove of the metering rod should the snap ring be on? On my one z-50 thats running well, it has it on the second from the top. On the orginal one I have, it has it set on second from the bottom. Anyone know, or does it really make a difference? Another note. I have a longer carburator cap nut on my bike with the high idle, I was thinking if I got the smallest possible it would give me a tad more to work with, which it seems I only need a tad....got the current nut screwed all the way down. Can someone direct me to the smallest carburator cap nut that fits the z-50? Also, is there a stronger spring out there that I can use for the metering valve assembly?


Thanks for any help

Jimmy

quote What is the best method for taking off the grip to get the throttle cable out? peel back the grip and shoot WD 40 in with the straw.to install,wash off the WD thats in the grip with soapy water and slide it on with grip still wet with the soapy water.my manual does not give a setting in stone for it.the metering rod clip usually is in the middle setting.that functions 1/4 to 3/4 throttle.mostly mid range cruising.if your plug looks tan after taking a plug chop cruising mid throttle your good to go.you may like to buy a cheap china carb,they come with a nice strong slide spring.all ct70's have the dead man throttle feel.it's mostly the grip touching the inside of the handlebars.

Thanks for the reply, I appreciate that, and will try that method if it comes done to needing it. Does anyone sell a smaller than original carb cap nut? Seems like there isn't much play between the throttle and actually moving the metering rod assembly when I twist. Can there be any adjustment up in the throttle grip, or is the only adjustment from the carb cap nut? Just wondering as I've never seen the inside of the grip area.

Thanks again

Classic honda,#169,170.a little further down#166 is the whole cap.P.C.

Originally Posted by P.C.

Classic honda,#169,170.a little further down#166 is the whole cap.P.C.

Thanks again!

I took the throttle cap off the bike and shot down a bunch of wd-40 in the cable. I noticed that the cap nut is NOT counterbored, thus not changing anything if you turn it in or out. Isn't it suppsed to be counterbored so that it can be adjusted and take slop in or out? Looks like the nut is just a stabilizer is all....don't quite get that if its supposed to be that way. So really another nut that doesn't have a countebore wouldn't do anygood, as it was bottoming out of the cap stem anyway. So really I would need to trim off some threads of the carb cap. Probably not going to do that right off, as I want to keep everything original. I just don't get it because the cable is the original cable, and it operates real smooth, with no binding. maybe my carb walls need cleaned a little better so the slide can move up and down more freely. I thing a new spring would do the trick...anybody sell any springs only? Hmmm Maybe I'll put it back together and see if the WD 40 did anything.

Well my friend, I want to thank you for your tip on the WD in the grip, worked like a charm. I solved the problem. The cable end up by the throttle came out of the retainer (funny that the screw isn't made to actually clamp on the metal end of the cable) and wouldn't go back into it. I thought that it was inside...but goes to show what I was smokin...guess I couldn't see how it actually worked until I took it apart.
Runs like a dream now. Throttle slide clicks shut well before throttle is at its end.


So my question is, should there be a longer screw inside the throttle that actually goes thru the retainer and bites onto the cable end to keep it from pulling out? I'm sure that mine is orginal, but its only about maybe 1/4 inch or so of thread and then it bottoms out on the head before it reaches the cable end. Looks as though it never was screwed in real far before as the throttle guide stops have hit it many times and wore off most of the threads by the head of the screw. Screw also has the little dot on it, so I'm sure its period. Regarless, I'm sure it will stay in there as long as I'm not pulling it down.

Thanks again!

Jimmy