These assumptions are based on theįact that the speed screw setting is not opened more than 11/2 turns. If the mixture screw is more than 2 1/2 turns out turns then the Idle jet is too lean (too Small). If the settingsĪre other than described then you may want to recalibrate the IdleĬircuit (low speed circuit) to your engines needs. (Per your notes) and go on a test drive and have fun.
![yamaha mio sporty carburetor yamaha mio sporty carburetor](https://i.ytimg.com/vi/cjgg41ytZ1g/maxresdefault.jpg)
Reset the screws (back in) to the best final settings
Yamaha mio sporty carburetor full#
Your final setting should be underĢ full turns. Also check the speed screwĪnd note how many total turns from initial contact. Line setting then all is well and have fun. Start by screwing in the mixture screw and count the number of turns it takes toīottom out and note if the engine dies. If all is still best and smoothest idle then confirm and noteĬonfirm settings with the engine running. Recheck mixture screw to lean best idleĪgain. Only needs to be 7 to 900 RPM with light load or AC on. Put the car in gear and apply slight load, (AC on) and set the Idle as you like it.ĭon’t set it too high, as this will cause causes excessive clutch The screw will be sensitive and should onlyĪnd set idle to your driving preference. That the mixture screw is at its best running location, you can adjust Your ear, not a scope or tuning instruments at this point. More, or until the screw does nothing or runs worse then turn back to TheĮngine should pick up speed and begin to smooth out. Screw until the engine dies or runs worse, then back out the screw (recommend turning ¼ to ½ turn at a time). Long as the engine stays running idle speed is not important at thisįirst thing to do is not set up the idle speed, but to set the Idle The engine, the engine will run very slowly more like a tractor. WILL CAUSE THE CARBURETOR TO NOT FUNCTION TO ITS IDEAL SPECIFICATIONSĪND MAY NOT PROVIDE THE PERFORMANCE AND FUEL ECONOMY AS DESIGNED. SURE TO FOLLOW THE NEXT INSTRUCTIONS IN THE PROPER SEQUENCE, DEVIATION NOT FORCE OR BIND AS THIS WILL CAUSE DAMAGE TO THE SCREW AND IT’S SEAT Set the mixture screw (see Fig 1) by first screwing in Open or screwing in 1 turn no more than 11/2 turns. (Checking for linkage bind) Now bring screw back into contact with the lever and continue to Linkage comes to close without any assistance. Cycle the linkage again to be sure that the Set the Idle stop screw (speed screw see fig 1) by backing out the Idle speed screw until it is not in contact with Is not in contact with the choke fast idle cam.)
![yamaha mio sporty carburetor yamaha mio sporty carburetor](https://i.ytimg.com/vi/dr_pwQt2gKQ/maxresdefault.jpg)
YouĬan check the fast Idle screw under the choke assembly to confirm that it (You will hear a metallic click as the cam is released.
![yamaha mio sporty carburetor yamaha mio sporty carburetor](https://ph-test-11.slatic.net/original/59a31590216611e5bc4c0a98e7e3f982.jpg)
Linkage is cycled (linkage operated through its full movement ) to clear Inserting a wood block or wedge of some kind to hold open while the This is done on automaticĬhoke carburetors by first opening the choke butterfly by hand and That the choke is fully opened and disengaged. Check them before the carb isĪll settings are done with choke disengaged or warmed up so Do notĭepend on the factory delivered settings. Start set up by confirming carb base line settings. AN ADVANTAGE OF THE WEBER CARBURETOR IS ITS EASE OF POOR RUNNING QUALITY DOES NOT MEAN A DEFECT The number one and two reasons for tuningĮrrors are improper linkage installations and over tightened linkage nut,ĬALIBRATIONS MAY VARY DUE TO REGIONAL FUELS AND STATE OFĮNGINE TUNE AND PERFORMANCE. It is important to follow all linkage and lever CARBURETOR SET UP AND LEAN BEST IDLE ADJUSTMENT Carburetor