Keihin PWK and FCR Instructions, Exploded Views, and Parts -Picture Gallery. Carburetor Tuning Range Chart. Keihin FCR Gaskets at Middle of Carburetor.jpg.

Blackjack Multi Advisor Serial Port more. When you clean the carbs, you should take out all the jets and thoroughly clean them. If you can, get a torch tip cleaner and run it thru the jets. You should be able to see daylight thru the main and pilot jet when the bowl is off and it's up to a light. The floats should move up and down with no hesitation. The float arm should be level. Download Office Xp Free Trial. The needle and seat should hold about 2-5 psi with the bowl off the carb and with the carb upside down.

Spray some carb cleaner on the needle and seat to see air bubbles if it is leaking past the needle. Do this test with a mightyvac tool used to bleed brakes. Once the carbs are sparkly clean, mount them in the sled and set your chokes. Easiest way to do this is to have the choke cables in their normal positions and set them into the carbs. They should have just a little spring tension before you feel the threads engage, then tighten the jam nuts and tighten the chokes in. Now for the throttle position.

You need about 1/8' of play in the throttle. With the carb tops installed, put your thumb from your left hand on the pto carb slide, and the middle finger of the same hand on the mag carb slide. You should feel the carb slides go up at the same time, in synchronization after you take up the 1/8' slack in the throttle. This is set with the adjustment in the cable on top of the carb. After that is set, you have to make sure the oil pump lever moves at the exact same time as the slides. The lines on the oil pump lever and casing should line up as well.