Slack throttle

[Kang]

Hi all. I’m fixing up a 1983 cg125. This is my first bike so I have zero experience but should there be slack in the throttle. I have to turn it about a sixth of a run before the bike will rev. I’ve adjusted the cable everywhere I can and even fitted a new cable but I’m still getting the same slack. Should that happen? I expected the bike to rev even with the slightest twist of the throttle. Thanks. 

[Old-codger]

At the throttle end the 90 degree bend should be screwed into casting then the locking nut nipped up then you should have a barrel nut with a locking nut. release the locking nut and then wind the barrel nut to take up the slack. Leave a small amount of slack say 2/3mm of twist grip turn and when you are happy nip up the lock nut on the barrel nut. Failing that check you have the cable routed and secured at both ends.

[Kang]

Thanks for the advice but I’ve already done all that and still loads of slack. 

[Old-codger]

Are you sure its the correct throttle body for that bike has it been changed out off something else that isnt right. Did you buy a genuine honda cable or a generic one as a lot of the copies are utter junk unless from a decent manufactuer.

[Kang]

To be honest I’m not sure if it’s the original throttle body. Probably not, the bike is 40 years old. I managed to fix it in the end though. I took some bits off the old throttle cable and made an extra little adjuster, slipped it on and that did the trick. 

[Old-codger]

Thats fine it does the job and takes up the slack nice fix. This may help with trying to find parts or how things are ment to go if you havnt heard of them before Honda CG125 1981 (B) ENGLAND parts lists and schematics (cmsnl.com) They are a huge supplier of genuine parts based in holland and are great for research into hundreds of models. Great for cross referencing parts.

[Kang]

Thanks for that. I’ll take a look next time I need to order something. Cheers.