CB77 throttle position

[CBasket]

I just replaced the throttle cable on my superhawk, and am not sure if the throttle valve position is correct. When the throttle grip is completely closed, the throttle valves are about 2/3rds the way down when looking into the carb from the air filter inlet. <br /><br />Is this correct? Or should the throttle valve be completely all the way down in the carb chamber when the grip is closed all the way? Thanks.<br /><br />In a related question - the throttle valves stick like crazy. Any ideas for remedying this problem? <br />

[georGe]

1- Are the slides placed properly in the bores ? i.e.-the slot that runs the length of the slide should be positiond so it runs on the guide that is inside of the bore.<br />2- Are the slide stop screws backed out so as to allow the slide to seat @ the bottom ? Yes the slide should be at the bottom of the housing,but remember the slide is cut on a angle.<br />3- Are the barrel adjusters on the tops of the carbs screwed all the way down ?<br />4-Did you put the throttle grip back in the right position when you changed the cable,also there is a set screw and lock on the bottom right grip assembly is it positioned properly ?<br />5-As for the slides sticking that could be caused by : 1) the slides being in backwards, 2)dirty bores and/or slides, 3) the carb. body being bolted down to tight to the cylinder causing distortion.<br /><br />Hope this helps!!<br /> georGe <br />

[CBasket]

Thanks, George! I adjusted the throttle cable at the grip and was able to get the slides almost all the way down in the carb housing. Now, it looks like I just need to screw the barrel adjusters all the way down and I should be set. <br /><br />The sticking problem remains, though. Could you suggest a method for cleaning the slides/housing? What product would you recommend and how should I apply it? I am afraid of scratching the slides or housing and causing more problems. <br /><br />Thanks again.

[georGe]

This is the tricky part !!<br />It really depends on how sticky they are in the bores.I normally wipe some Dykem in the bore and on the slide so I can see exactly where the high spots are. After I find where the bad spots are I like to use a ultra fine emory(sp?) clothe(I dont remember the exact grit but it is FINE almost like tissue paper) and start wiping then cleaning then fitting until I feel comfortable.<br /><br />I can not stress enough about being careful and going slow so as not to move to much material !!!!!!!<br /><br />Good Luck,<br /> georGe

[stoic]

Sticking slides are sometimes caused by a deformed carb body, as a result of overtightened mounting bolts.<br /><br />I'd loosen the bolts and check the slide operation. I would not sand nor lubricate the slides.<br /><br />honda305 Repair Log has a record of the &quot;sticking slides&quot; problem and how it was solved...

[georGe]

I am glad to see Im not the only person that has overtightend the flange nuts causing the slides to stick(lol) !! They were not even that tight and it still bound up.<br /><br />The clothe I was refering to isnt actually sandpaper it is a polishing paper we use for cleaning journals and the like. I had to use it on my carbs because of the scale build up.<br /><br />georGe

[CBasket]

George and Stoic - thanks for all the great info. I read the repair logs, and you're right, there is a lot of good stuff in there!<br /><br />I solved the problem by further adjusting the throttle cable and now the bike runs great! Idle is perfect (or at least can be properly adjusted by the idle screws) and the bike fires up right away, even in the cold.<br /><br />Thanks!!