help with setting up standard carbs

opsman · help with setting up standard carbs

Hi all I new here and have recently bought a KH250 B1 1976 absolutely standard and would like help with carb settings as I have heard the settings for middle carb are different to outside ones. the bike starts but very slow revving ie takes a while to catch up with throttle action.

Any help would be appreciated

HIGGSPEED

Hi , and welcome to the forum.

Whats your name??

Anyway, it is quite common for the carbs to clog up and there is no quick fix. you need to remove them all, strip them right down and methodicaly clean them all out. pay particular attention to the pilot jet and the pilot jet bleed holes. make sue eveything is spotless and rebuild, setting them to standard settings if you are using original airbox and pipes.

Unless your tank is pristine , or has been sealed, be prepared to do this regularly as the crap from a rusty tank will block the pilots again in a heartbeat.
You will soon get to "hear" when this happens again as the engine goes from being crisp and responsive to being dull and lethargic wnhen you rev it.

Also blocked mains will result in seizure.

look here for standard settings

http://kawtriple.com/mraxl/carbspec.html

oh and make sure the timing and points are set up right too.

see this
http://kawtriple.com/mraxl/tuneup.html

we are a friendly lot so dont be shy.

Cheers
Higgsy

opsman

Thanks for quick reply my name is Tom and I will start strip[ping as I also bought all new inlet rubbers as they were all gaffa taped up to seal them by the old owner

Click to see full size image

HIGGSPEED

Hi Tom,
looks like it has not been used for a while. another top tip is to clean out the screw on feed at the bottom of the oil tank as they fill up with gunge and cause expensive seizures too.
Looks complete though, should make a nice bike.

Higgsy

opsman

by the way I love the exhausts you do but a bit out of my reach for the minute, trying to see if my old ones can be re chromed as they are pitted but no holes

BIG AL

opsman

how much are the exhausts then?

HIGGSPEED

Just click the link on my signature to visit the website for prices etc.
i am not on here just to sell pipes though, yours will probably be fine for a while as they are. you have plenty of other things to spend money on first by the looks of things .

good salesman aren't i

S.P.O. thats me.

(sales prevention officer)

kas750

The Wolfman

But back to the carbs, Yep clean, clean, clean before you try any setting up.

I'm a recent convert to Ultrasonic at home for carbs..

kas750

best to run with the mini inline filters for a while to stop the pilots from clogging up.You soon get pissed off constantly pulling the carbs to clean them......

180kid

would not recommend getting any pipes chromed that have pits, especially along the top seam, bit like having a wheel rim done, unless the firm is extremely reccommended for attention to detail, which puts up the price of course,
been there with old dissapointment as the old pits stand out like dayglow !!,..."well we can only work with what you bring us",..

, thanks for your £300, be very wary of the company your thinking of using, just trying to help,

dandare

nice shiney pits thou

Welcome

bubba2

Be careful with needle valves !! just use carb cleaner or the little buggers will never seal again ! and cost a fortune i spent over hunred quid on mine !

gerkin

hi tom im a newbie also with a 250 b1 (fancied a change from aircooled rds )mines part restored but still needs lots of work has not been taxed since 1990 so has been standing for some time!

banjodeano

I found this site very helpfull, i am a novice as well, after a few reads it starts to sink in a little, i hope it helps

http://www.iwt.com.au/mikunicarb.htm