750GT Amal Carb settings
Posted: Sun Aug 04, 2013 3:01 pm
When I started restoring my 73 750GT - US model, I noted the needles were set on the top slot. My little owners manual said slot two, so I moved them when I cleaned the carbs. The owners manual also said it should have 190 main jets, but the carbs have 200 main jets in them. My bike has a low speed surge problem on light throttle between 3000 & 4000 RPM with light load. Seems rich, not lean, when run on 100LL av gas, which has no ethanol. Others that have used this gas says it is the way to go here in NJ where you cannot buy ethanol free gas. I recently installed a Dyna ignition and the bike runs better, but still the surge. I went on the Amal web site and they say the needles should be on slot one (the top slot). Can anyone share with me their settings and jet sizes for an early 750GT? Also, can anyone tell me the correct slide cutaway - I cannot read mine. Thanks for the help.
Note that I am going to try needle position # 1 in a couple of days - just to see if there is any improvement.
One more question - anyone know what the "diffuser" is on these Amal carbs?
Note that I am going to try needle position # 1 in a couple of days - just to see if there is any improvement.
One more question - anyone know what the "diffuser" is on these Amal carbs?