I set the idle stop screw 2 turns from seated to get it in the ball park then once it starts I set the idle to the correct RPM. On the Kehin carbs the fuel screw should be between 2.5 and 3 1/4 turns out from seated, I've found that 3 turns is about perfect for most bikes where the factory setting was 2 3/4. If you can get to the fuel screws once installed the set the screws lean, raise the idle to 1500 RPM, and give them a 1/4 turn out. If the RPMS rise then lower the idle back to 1500 and repeate the process until there is no effect on RPM. If it is lean when you blip the throttle there will be a stumble as the RPMs rise, and the RPMs will hang then lower to idle when you let off. If it is too rich it can also stumble on roll on, but the RPMs will drop below idle and it will pop in the exhaust. Tuning must be done on a hot engine so plug in a fan to keep it from over heating. Sent via BlackBerry by AT&T
-----Original Message----- From: "Allen Thomas" <[email protected]> Date: Tue, 29 Apr 2014 11:14:49 To: Nightwawk Lovers<[email protected]> Reply-To: [email protected] Subject: Re: [Nighthawk Lovers] stumped What did you set the fuel screws? If you spray gas how is the idle? If the throttle stop screw is set too high or low it won't start, same goes if the fuel screws are too lean. Sent via BlackBerry by AT&T -----Original Message----- From: Matthew Ward <[email protected]> Sender: [email protected] Date: Mon, 28 Apr 2014 18:36:30 To: <[email protected]> Reply-To: [email protected] Subject: [Nighthawk Lovers] stumped So I cleaned the carbs on my 1983 honda cb550sc put them back in and hooked up fuel and bike won't run. The weird thing is that if I spray fuel in through the air box it will run all day now I took the carbs back off and there was fuel in the float bowls hence the reason I am stumped -- You received this message because you are subscribed to the Google Groups "Nighthawk Motorcycle Lovers!" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To post to this group, send email to [email protected]. Visit this group at http://groups.google.com/group/nighthawk_lovers. For more options, visit https://groups.google.com/d/optout. -- You received this message because you are subscribed to the Google Groups "Nighthawk Motorcycle Lovers!" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To post to this group, send email to [email protected]. Visit this group at http://groups.google.com/group/nighthawk_lovers. For more options, visit https://groups.google.com/d/optout.
