Topic: Woh HA!! It lives after sitting over 20yrs, Got a quick question

[ditchen]

As mentioned I got this inherited 75 cb750 for my Dad, been sitting in the barn for a good 20 years. Went throught the carbs, burnished and re-set the points and verified the advance plate, all ok. I also change the oil. Just sand blasted the plugs for now. I was planning on replacing them and the points once I get it running. Remeber this bike is unmollested and all original. I put the carbs back together with everything being the same. All the idle mixtures were at 1 1/4 turns out.

I left the air box off to fire it up. It fired right up, it is a little cold blooded, but seems about the same as I remember some 25yrs ago when I rode it.

I took it for a short spin, no airbox... Big hesitation when you hammer it. Slow roll on it is ok. I know with out the box it should be on the lean side, but just would not have figured it to die.

Just wanted to ask before i put the airbox back on and find I got to take it off to adjust the carbs. Once again, new it would be lean, but just not that much.

Thanks in advance, Mike L

 

[Buffo]

if it is the bike in the pic... that is a fine bike.

Yes the bike is most likely running lean right now if the air box is off. you have to make all of your adjustments with information that you get with the airbox  AND filter installed or you will get false readings and the bike will run poorly when you put it back on.

so put them both back on and test it!

Awsome

Buffo The Magnificent

[ditchen]

Well, I installed the airbox this morning. Going to take for another spin today. Got my fingers crossed, Man is that box a PIA with the harden rubber boots <snarl>

[ditchen]

Welp, it is running like a champ. A little adjustment on the idle screws,and had to advance the timing, and then a little more. Boy it loves the premium gas. Put about 100 miles on it today.

Now onto a good tune up and tires, chain and sprocket. Gues after 20yrs plus of sitting it deserves it.r

Dayme, what a time machine