FZRSupport: the FZROnline Archive

So I just cleaned the carbs out on my 1990 fzr 600 I got. And now I'm trying to figure out what's up with the throttle. It opens up just fine, but when I release it, it doesn't just spring back like it should,it like slowly drags back. The line isn't tight, and the springs on the carbs worked. So what's up? And what do I need to do?

Did you try lubing the cable ? also did you checked to make sure both cables are adjusted correctly? I dunno if you have bar ends and grips on yet but that can actually cause it also if the bar end isn't right or the grip isn't far enough on the throttle tube. Hope that made sense

I dunno, . Not sure what you mean, but it looks like the throttlehandgrip tube is on all the way if that's what you mean. And I want to try luring it but what do I use? And where do I apply lube?

You would have to remove one end of the cable and use a spray lube with the little red tip and squirt it between the cable and coating. You could also take the cables off and submerge them in an oil or some thing of that nature. It could just be the cables are worn out and dragging inside the coating. Also make sure there are no tight bends in the routing from the bars to the carbs.

That sounds simple enough. . Would liquid wrench chain lube do the trick? Or is there a better lube to use? I'm gonna take the throttle grip off first and see if that's and issue, and I'll lube the Cables while I'm at it as well.

I don't know about the chain lube might be fine. Don't use wd-40 it will dry out. You'll have better luck with a runny lube like a penetrating oil it will flow in there better.

I'll probably hit up Walmart and see what I can find. So anything that says "penetrating lube"? Or is there a brand you would suggest? From Walmart or like any main auto parts store.

I use the liquid wrench chain lube as it also says cable lube also. " Apply to any chain or wire cable. Stays put on moving parts to reduce friction. Prevents corrosion. Use on bicycles, throttle cables and garage door chains. Reduces wear. Prevents oxidization. Anti-sling formula. Safe for O-ring & standard chains."


Liquid wrench also makes a penetrating lube if you want to go that route also.

What I was trying to say and I dunno as I can't see your grips or bar ends. If the grip is not far enough up the throttle tube (towards the start switch housing) and you crank on your bar end that can cause slow snap back of the throttle. I found this out when I changed some grips on my gf bike last year. I'd say though if the bike has been sitting for a long time then I'd try lubing it real good first. If the problem persist after lubing I'd take the bar end off and see if you still have that issue. Also I dunno how long the bike was not used but you could always replace the throttle cables.

It wasnt rode for a year, and wasn't cranked for 6 months,lol. I'm trying to spend as little cash as possible too, haha. So I'll try toluene it up first and go from there. . I can pot a pick of my throttle grip too.

So I tried to take the throttle body thing(with the start button etc on it) off and one of the screws stripped out..... So it there a way to get the cable off without having to drill that screw out or what? Ima spray some liquid wrens on the screw and hope I can work it out, but yeah... Or where do I need to apply the lube to the cable in order for it to get inside it and throughout it?

If you have a dremel tool you can cut a cross pattern on the screw head and then use a bigger flat head to take it off. This is how I usually get those pesky suckers out. You have to take the throttle housing apart to lube the throttle cables but that won't be the best way to lube. I take mine off and lube them cause if you spray lube just down inside the housing you probably won't get the whole cable very good.


Also I dunno if it's cause I have aftermarket grips and bar ends but I have way more space than you have. I even took a picture of my GF R6 and she has about the same amount of space.. again I'm not sure if this is cause we have aftermarket grips and bar ends. Top is my FZR 600 and bottom is her R6.

Wow, that is a big difference, haha. Idk either.mso you take the cable out of its housing, or just off the bike to lube them? Lot of vids have different methods of lubing them so idk..

Yup if the rubber of the Grip is touching the Either the Cutoff Switch or Bar End it will stick a little..

However you said that you just had the carbs off; did it do this before??

This sticky issue is common where the Cables attach to the Carbs. The cables have to be perfectly straight where they hook to the carbs.

The Brackets which hold the Cables bend easily, which makes the cables bent and they stick. (This happened to me last week, don't remember exactly what i did, but the cables have to be perfectly straight when coming out and hooking to the carb.) *When its sticking, just wiggle the Brackets and you should see the cable get a little better.

Yes,it did it before I took the carbs out. But yeah. I havent messed with it again yet. I probably will tomorrow.