Mike wrote on 12/31/69 at 16:00:12: It seems here that most people do one or the other. I dont mind doing both, but It would be a real help to hear it from someone that has already had success or failure with it.
Thanks so much for everyones help
mike C
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I assume you have a good set of tools if you have wrenched on the scooters.
Here's what I would do.
1st, Go get a 155 jet.
Next, Pull the float bowl off the carb.
Loosen the clamp on the intake rubber and twist the carb to the side you are working from if you must.
Kick the bottom of the carb left and remover the left 2 screws then kick it right and do the right 2 screws.
You may wind up removing the carb and letting it hang.
Swap the 145 main jet for a 155.
I would start w/ the 155 1st.
Replace the crummy phillips head screws w/ allens.
Ride it.
If you test this in cold weather it may be rich come summer and a 152.5 my work better.
If it is still too lean then I would file the white nylon spacer 1st before removing it completely. Let me know if the 155 is 'fat', I have a spare 152
I posted some pictures and all the dimensions awhile back.
I have a Supertrapp w/ competition open end reverse megaphone and my next move is to swap the 157.5 for a 155. Greg and I both seemed too think the 157 is rich.
I was hoping to prevent blueing.
I have posted my experience building up a NOS carb last summer here. BTW; My Supertrapp is bluing (golding?) even w/ the fat jet in it, but the metallic-ceramic coated head pipe was fine. I pulled the batterylast week and she is parked 'til springtime as it is not insured December thru Feb. (Progressive)