I seen this item when I was at Tsunami Bike a while back, it's for a CAG carb. On the CAG carbs the float bowl drain is on the bottom and is centered...you remove the screw from the drain, remove the main jet, replace those parts with this unit and you now have an adjustable main jet. The bottom of our float bowls has a recess in the center, you could likely drill the recess out and install the bottom half of this unit without too much fuss. Biggest problem would be the part of this kit that replaces your stock main jet, CAG jets are not threaded the same as ours, so you'd have to mod your stock jet (with a tapered reamer maybe?) or machine a new part. I'm going to have a go at making one up for myself but I'm hoping maybe one of the after market guys on here might pick up on the idea so everyone else can easily get a proper adjustable main jet kit too.
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