July 13, 201412 yr Would appreciate assistance from anyone who has fitted a Mikuni VM26 to a 250 Ossa Gripper. Have tried a number of main & pilot jets, needle sizes etc without real success in getting the bike to run right.
July 15, 201412 yr I had the same problems on my 350 and ended up switching to an OKO from a 250 gasgas. Never looked back, it runs sweet, the plug is always a nice colour and uses less fuel.
July 15, 201412 yr My carb is a 28mm mikuni but the bike is a 250cc, main jet is a 180 (did use a 190) and the pilot is a 3.0 (did use a 2.5) needle is 5L3 on the mid grove and the slide is a 2.5 Good to know about the OKO longlegscanbeusful, Steve.
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