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Well to be honest. When you do a break-in on a new engine your NOT supposed to stop after two tanks. The engine needs to sit around 200° 220°. Over the five tanks so that the piston and sleeve mold to each other correctly and create the pinch.. So it just might be messed up already. So when...

That's why I said start at 4 turns out. It should be a big block. At .28 so starting at 3.5 might not be enough. 4 won't hurt it to start. The LSN should be flush with the carb arm attached to you throttle servo What type of fuel you using. Has it been sitting around as long as the rc?? Curious

whats up bud. what is this engine in? buggie truggy MT? the instructions seem all messed up. so you say you already ran it? So why do you need to break it in? and with the two different settings there might be two different versions of that model. that has different engines I would go with 4...