Just installed a 66cc engine, followed the guide for starting in the instruction manual, but couldn't get it to start. Currently using a 16:1 fuel mixture ratio. Does anyone have any ideas?
Take s/p out of head. Hold s/p against head so it's grounded then roll bike to turn engine over and look for a spark. If a spark is hard to see in the sun try it at might.
16:1 seems like a lot of oil, even for break in. I would suggest 25:1 to 40:1. Lot's of people will have different opinions, but I think most would agree 16:1 is too much.