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jj65

RTL250S 88/89 needle and main jet

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Would be most grateful for any advice on main jet sizes and needle position on the 24mm keihin carbs in the UK please. Mines got a #108 main jet and a #38 slowjet (it’s a jap import) and the needle is 272301, wth the clip on 3rd slot from top.

The manual shows these main jet sizes from oem parts:

#100

#102

#105

#108

#110

#112

#115

and slow jet:

#35

#38

whats the best setup for sea level upto 900ft (which is the highest I ride). Any info would be very gratefully received, thanks.

Edited by jj65

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