premix on a 70?

I've got a gilera runner with a athena 70, yasuni c16, 21mm carb, do I have to run it on premix or can I carry on using the oil pump and putting the oil in seperatley?

 

piaggio engines have an adjustable oil pump just adjust that so it is set to give more than standard

but pre mixing gives visibly better results on the strip down compared to auto lube

 

Thanks mate ill thiink ill adjust the oil pump as I don't really understand the premixing never done it before, how much would I adjust the oil pump by?

 

not really a set amount of adjustment tbh

just adjust it so that when the throttle is fully open that it goes past the mark for standard on the pump

 

if i was to premix how much oil would i use to one litre of petrol

 

if you do pre mix at 3% (30ml of oil per litre of fuel) a upjet of about 3 sizes to compensate otherwise the oil present in the fuel would cause you to run a tad lean

 

thanks

 

i now have a problem with starting it cold it wont start at all and when i did have it running it wouldnt go past 8000revs does this sound like the jet is too big?

 

i have a manual choke on it tho, might just end up making it standard again and selling it to get a 125