You said you have an OS .40, so I'm assuming its the LA 40. These engines are generally pretty easy to hand start once they're properly tuned. They also like to be pretty heavily primed. I normally give my about 7-8 strokes with my finger over the carb at full throttle and then close the throttle, remove my finger, and give it 7-8 more flips. Then put the glow igniter on and start flipping. If it doesn't start in the first 3-4 flips, try opening the throttle one or two clicks on the transmitter and try again. If it still won't start, try leaning out the high speed needle one or two clicks. Every 3-4 flips, lean out the high speed needle one or two clicks. Eventually you should get to the point where it will start.

Make sure you're glow igniter is fully charged. The first start might take a while, and a dead glow igniter can be very frustrating.

Don't be surprised if it starts backwards. Just flip the throttle open and closed when its running backwards. If it still won't turn around, pinch the fuel line. As it leans out, it will turn around.

Brad