Throttle bogging out

[blackdog]

Hi guys/gals
After some imput

My Kat 400 has just had a rebuild
I used the carbs from my other Kat (which I know worked)
So I've set them up with the carb tune
bottom fuel screw ' 2-3/4 turns out
reving nicely and returning as should
but when tacking it to the MOT tester's
she reves ok but a big flat spot in the middle reve range
The only thing that different between my two Kat's
is the I've got probs with has a straight through can fitted???????

Is there any adjustments to make
of tests I can do??????
Any advice gladly needed!

Si

[fossie]

400 very prone to carb set up.
The manual set up says 1'75 turns out for pilot screw. needle clip 3rd groove. However the straight through zorst may need a notch move on the needle clip.

[superfly]

Hi Fossie,

Do you have a transalation of the manual ? I have only a japanese version...

So could do with more english word

[fossie]

There is no english version but tech stuff is already in english.

[johnr]

have you got the air filter insert?

[blackdog]

that's one difference between the 2 Kats
the 1 thats bogging down has a new orignial air filter with fitted insert and straight through exhaust
and the other standard exhaust and no air filter insert fitted but that runs fine

[Pedda]

So you gave the answer, I believe.