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General Category >> Rubber Side Down! >> Carb and choke questions
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Message started by uranusklingon on 06/25/25 at 15:34:29

Title: Carb and choke questions
Post by uranusklingon on 06/25/25 at 15:34:29

Is the stock carb choke supposed to have 2 levels? I always use mine all the way out until warmed up, but there seems to be a mid-way out point on the choke that makes faster idle. Also, lately the choke has been popping in by itself when riding, is this just normal wear? (Caused bike to stall today at a stoplight). Once warmed up she runs fine without choke, but I am usually too impatient to fully warm up before riding.

Also, I got a Sportster muffler which I haven't installed yet. (won ebay bid for $5!)- Rather than mess with the stock carb and jets, I was thinking of getting a pwk38, and keeping the stock carb and muffler in case i want to go back without messing with anything. Anyone tried a Nibbi PWK38? This is the one I am looking at: https://www.amazon.com/Carburetor-350cc-450cc-Motorcycle-KAWASAKI-SUZUKIApollo/dp/B09PY88HLZ/ref=cm_cr_arp_d_product_top?ie=UTF8
Think this carb will work?

Title: Re: Carb and choke questions
Post by Dave on 06/26/25 at 03:53:39

The choke (enrichment knob) does have 2 levels of engagement. As the plastic part gets old it does begin to lose it's ability to function.

The stock carb works just fine when cleaned and jetted properly. It is easy to get the jetting improved. If you live at lower elevations a #50 or #52.5 pilot jet, a #150 main jet, and replace the white spacer on the needle with 3 washers......Easy Peasy! (If you live at mountain elevations you may want to reduce the jet sizes to #45 pilot and #145 main).