Piston stuck at TDC
I bought second new engine for fast change if my current engine will be broken. And have problem with new engine Piston stuck at TDC. I am read user manual for my slayer Pro at page 35, but Piston stuck it is very strong. For free piston i used ittle kick. Rebuild engine i do tighten the screws not force but without less compression. How your fixed this problem?
I've sprayed some light oil such as WD-40 into the cylinder and spun the engine over a few times to keep it lubed up. All screws should be nice and snug but do not over tighten or they will strip.
I`m will try your solution and use cordless screwdriver for rotate engine.