Home, sudco mikuni carburetor tuning manual 4TH edition.
Then sudco count the manual turns manual from this mikuni point to bottoming out, if you take less than 3 and more than 1 complete turns to achieve bottom, the jet is correct and you simply wind back to the centre point.
Paul B, great first time buyer experience.Follow this with 1/2 turn checks winding in one direction every 10 seconds till the engine starts to stumble, at this point then wind back in the opposite direction counting your half turns till it stumbles again.Please Note: Other than exact replacement OEM carburetors, all Mikuni Aftermarket Carburetors and Tuning Components are sold As Is for Off Road / Racing Use Only and are not intended or approved for use on vehicles operated on Public Roads sudco or in Locations where applicable.This is perhaps one of the best written book on carb tuning, just ignore the accelerator pump mikuni section if using a non pumper carb and remember that the mixture screw is an air screw where as on carbs with the screw located behind the bowl.Change and test with the next size jet both up or down to determine weather an improvement can be obtained and in what direction.An inability to tune out a problem in the mid range will indicate that the needle profile manual is not matched to your engine or a slide change may be required. Mikuni or TD Hatrick Co is not responsible for mechanical damage or personal injury caused by an improperly installed carburetor, operating conditions, its installation and tuning tuning by the vehicle manufacturer, dealer, mechanic or private individual, or their inability to immediately recognize and properly correct unsuitable.
Just off the press is their new 96 page 5th reading Edition Sudco Mikuni Carburetor Manual featuring the complete line of Mikuni RM, gentleman VM, HSR, HS, unspoken TM, TMX and BN Carburetors and Fuel Pumps with Parts Breakdown Diagrams, available Tuning Components, Tuning and Setup information.Tons of pictures and diagrams at your fingertips!Marvin Keep up the good work Buy and Download complete Service Repair covers every resident single detail on your vehicle.Wind back the number of counted turns to the centre point.If you notice an improvement in one direction, keep changing to the next jet size in that direction till the improvement stops and she drops off the perch, then go back one.You get everything you will gentleman ever need on one easy-to-use cd-manual.Never drill jets and do remember that most aftermarket jets do not flow correctly.Dont give up half way through this process thinking youve got it right before reaching the limit, otherwise you may will be robbing yourself of a surprising amount of horse power!If improvements appear in one direction of adjustment but perfection is not achieved whilst having reached the end clip on the needle, then you will need to install a richer or leaner needle ebook if available or else a corresponding needle jet.Nothing else other than the pilot jet has an effect at idle.Dave, fast and simple, reading randall L, easy and fast, reasonably priced.Easy site to navigate.Remember the tuning order is idle circuit, then main jet and then finally mid range.