ORIGINAL: michael wood
Ive changed the plug and gaped it at 25. The battery has a full charge Iam missing something and cant figure it out. Let see if i am doing this right. I start with the piston set at top dead center and set the degree wheel to read 0 and rotate the engine ccw to read 28 degrees and lock it down if that is right then i did it right right?
TDC is where the pistion has traveled as far as it can go toward the spark plug. The position of the engine has nothing to do with TDC.
Find TDC, set the degree wheel to 0. Hook up the ignition, turn on the battery switch. Rotate the engine CCW until the ignition fires. When it sparks, check the degree wheel and see what it reads. Adjust the timing until it fires at the desired timing when your rotating the engine CCW. DO NOT ROCK THE ENGINE BACK AND FORTH TO SET THE TIMING.