1977 Johnson 85hp Timer Base Replacement help

[steve9715]

I`m getting ready to replace the timer base and was wondering if anyone had any tips.Never replaced one but looks fairly easy.I have to rent a puller for the flywheel and get a 1 5/16 socket.Any help would be appreciated,thanks.

 

[fdrgator]

In theory, you will have to reset the full advance timing. You may get lucky without it.....Or you may destroy the engine. Feelin' lucky?

 

[racerone]

Was the existing timer base tested ?-These units are fairly reliable.---Need three 5/16" fine bolts for the puller and make sure you torque the flywheel to 105 ft-lbs when done.

 

[Boobie]

How do you know the timer base is bad ?? How did you test it ??