LOW SPEED JET -Just off idle to 1/3 throttle.ĥ. POP-OFF PRESSURE -Just off idle to 1/4 throttle in conjunction with the low speed jet.ģ. LOW SPEED ADJUSTER -To adjust a smooth idleĢ. To achieve an accurate calibration with a carb, you should adjust the tuneable circuits in the following order:ġ. Why?.if you tuned your ski with 1/4 tank for max rpm, then filled it up and ran it, you could be too lean.With added weight of the fuel,the motor will want more fuel to pull the extra weight and if your tuned for low fuel, it could put you in a lean condition.Simply tune for a full tank,that way you will have plenty of fuel all the time. The best advise is to use quality parts and service from reputable dealers. A mismatch of engine components and or porting may create a carburetion nightmare. Another point to stress here is that you may not be able to achieve maximum performance from your watercraft simply by changing jets in the carb. Most importantly, you can only expect the carb to work as well as your engine does the performance of your carb cannot make up for a weak or worn out engine. Accurately tuning a PWC carburetor requires a basic understanding of its functions and adhering to a few basic rules.
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