Timing Marks on Balancer
Get yourself a piston stop and check it. There is no other accurate way, if the engine is assembled, without "expensive" equipment. I made this one around 1972 and STILL HAVE IT
If you buy one make SURE you add a lock nut to immobilize the plunger. Remove battery ground, and no1 plug. "Wrench" the engine over until no1 is "down a ways."
Install the stop device, and carefully wrench the engine around until no1 stops against the device. Make an accurate, temporary mark onto the balancer under TDC
Now wrench the engine around the opposite direction, until the piston again stops against the device. Make a second temporary mark as before. Your true TDC is exactly halfway between the two marks.
Get yourself a piston stop and check it. There is no other accurate way, if the engine is assembled, without "expensive" equipment. I made this one around 1972 and STILL HAVE IT
If you buy one make SURE you add a lock nut to immobilize the plunger. Remove battery ground, and no1 plug. "Wrench" the engine over until no1 is "down a ways."
Install the stop device, and carefully wrench the engine around until no1 stops against the device. Make an accurate, temporary mark onto the balancer under TDC
Now wrench the engine around the opposite direction, until the piston again stops against the device. Make a second temporary mark as before. Your true TDC is exactly halfway between the two marks.