iconic558 Posted December 3, 2021 Report Share Posted December 3, 2021 (edited) Maybe useful, there's a few VM carb threads here. Mikuni Tuning and Jetting Guide - THE VINTAGE BIKE BUILDERhttp://www.vintagebikebuilder.com/mikuni-tuning-and-jetting-guide.html  The OKO is a VM copy from what little I know so may help on these too. 😎 Edited December 3, 2021 by iconic558 2 Quote Link to comment Share on other sites More sharing options...
feetupfun Posted December 3, 2021 Report Share Posted December 3, 2021 6 minutes ago, iconic558 said: Maybe useful, there's a few VM carb threads here. Mikuni Tuning and Jetting Guide - THE VINTAGE BIKE BUILDERhttp://www.vintagebikebuilder.com/mikuni-tuning-and-jetting-guide.html  The OKO is a VM copy from what little I know so may help on these too. 😎 Yes that's a helpful book. The OKO D slide is a copy of the Keihin and getting the jetting right on an OKO on a trials bike is very different to jetting a Mikuni VM 1 Quote Link to comment Share on other sites More sharing options...
pschrauber Posted December 3, 2021 Report Share Posted December 3, 2021 Yes a very good structured write up and apply able to all kind of carbs to which you get different jets, needles, needle nozzles and slides and so on. The only thing's left out is determining choke, the gas valve and the float weight. I personal had no big joy in adjusting the VM at my TY it is very costly to obtain spare parts besides standard main jets for VM carbs in Germany, Dell'Orto is so much easier to get and much less costly (beside the slides), thus I went that route. 2 Quote Link to comment Share on other sites More sharing options...
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