Inliners International Forums General Discussion Engines 250 Timing issue

Fred,
Disconnect the battery.

Install the balancer then make or buy a piston stop that screws in place of #1 sparkplug. The piston stop must stop the piston from going all the way to TDC. Remove all the spark plugs so you can rotate the engine BY HAND.

GENTLY rotate the engine clockwise until the piston is stopped by the piston stop. Mark the balancer where the "O" is on the timing tab.

Rotate the engine counter-clockwise until the piston is again stopped by the piston stop. Mark the balancer at the "O" again.

Half way between the 2 marks on the balancer is true TDC. Either paint a TDC mark on the balancer or scribe a permanent mark there.

Now you have TDC.....accurately.

Ron