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Carb setting and point specs for 1979 KZ750 LTD twin.

11628 Views 12 Replies 5 Participants Last post by  Alizard
Bought it from a buddy who bought it but never messed with it until i bought it from him. would't fire, he cleaned points, but not sure if they are set correct. would only run on 1 cylinder, took other carb off and float was siezed closed. He cleaned both carbs put them on I brought it home and it runs..but at low idle it misses, as soon as I get into the throttle both cylinders come to life. I cruised it up and down the alley a few times and it seems to have lots of Jam going through the gears. Just at low idle that **** miss, it wont idle without assistance on the throttle.(unless I turn the idle screw up/in).

I have not checked the compression yet, I will I just forgot to take my compression tester over to my bro's (its actually at his place).

Anyways I was wondering if anyone can give me any pointers or the settings for carbs and points. Also am having trouble finding service manual for this model.

Thanks to all!
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Thanks I expect to be riding for the rest of my life now so I guess I should buy a tool and do it right!

I have another question but will post as new.
Been away for a while. Anyways, Just got on the road with the bike. Misses at low idle, backfires on deceleration. Have been searching and found one person who says that the bike is running too lean. Still looking for more opinions until I get a carb tuner. The guy I bought it from took carbs totally apart and cleaned and put them back together and on. He didn't have a battery to drive it (only to start it, it was too big). So when he set the carbs he would have just been idling it in one spot with no carb tuner that I know of.
Thanks 1adam12. As a footnote to that. I took it out this morning and it ran rough for a bit but started to fire on both and run smooth on idle, deceleration and acceleration. The other post abou the too lean said that is what his was doing also. Although I rode it for 20 mins or so last night and still back firing. I was hoping to run a tank of gas through it before I started messing with the carbs. It has not run in at least 3 years.

Anyways thanks again, I am looking for some info on checking stuff after it has sat so long, but will post as new topic.
Just to keep updated. Took bike out again this afternoon, started and ran on both the entire time. I had the right side carb leaking through the overflow tube since I bought it. After last night it did not appear to leak anymore, I have been putting a jug under it to catch it, and the jug did not look any more full this afternoon. I put a new jug under after this last ride to see if it has stopped. That may have been my problem, if the float would not stop fuel flow it may have been flooding that cylinder off and on...by the way, it was that side that was backfiring.

Thanks all.
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