4 replies to this topic

[triton]

Hi,
Just got around to fitting a Keihin PW22 carb on my cub, I bought it from auto jumble it is jetted 38 idle, 98 main, 2.5 slide.
It is far more responsive than than the Anal concentric that was on(pun in10did) , but will not idle correctly keeps 8 stroking with black smoke from exhaust but pick up is superb.
Does anyone have any tips, idle jets appear unobtainable this carb was on early Honda twins CD175/200 I believe, also on the TLR seeley Honda.
I have yet to try the fuse wire trick.
Any help much appreciated.

[andy0101]

ive got one on my cub and its the same as yours its rich at the bottom end and weak at the top end and ive not found any jets for it the pilot is some pressin type on mine some one suggested poking a piece of thin copper wire down the pilot jet then soldering it to the side to bung up the hole a bit
ive tried it and its better but not purfect

[Andy.T]

triton, on Oct 19 2009, 08:13 PM, said:

Hi,
Just got around to fitting a Keihin PW22 carb on my cub, I bought it from auto jumble it is jetted 38 idle, 98 main, 2.5 slide.
It is far more responsive than than the Anal concentric that was on(pun in10did) , but will not idle correctly keeps 8 stroking with black smoke from exhaust but pick up is superb.
Does anyone have any tips, idle jets appear unobtainable this carb was on early Honda twins CD175/200 I believe, also on the TLR seeley Honda.
I have yet to try the fuse wire trick.
Any help much appreciated.

Hi, will the mixture screw on it not give any adjustment ? not an expert on these carbs it was just a thought, perhaps even adjusting the float level could help, Ok now tell me to shut up as I dont know what I'm talking about.
Regards Andy.

[B40RT]

How about soldering up the hole completly and opening it again with gas welder nozzel cleaners, which come in a range of small sizes.

[alan]

how about a set of small drills i got mine here http://www.rdgtools....TO80DRILLS.html