1150 merc

[74 glascraft]

I have a 1974 inline 6 merc does anyone know how to change the rotor in the distributer. also changing timing belt . I noticed there is a dot on the pulley on the end of the rotor shaft should it line up with the dot on the distributer housing when at tdc

 

[Laddies]

Re: 1150 merc

Align the timing make at TDC, one on the flywheel and the other under the belt drive plate on the dist. then remove the cap from the dist and the belt from the drive, next the flywheel and drive pulley on the dist shaft. 3 bolts hold the dist assm. Do not touch the idle and spark advance screws, remove the plate there in from the engine (2-1/4" bolts) Now there are 3 bolts holding the dist to the engine,remove the nuts and the dist will come out. Remove the upper bearing, there is a nut that under it that holds the rotor in. Next mark the timing plate so you know which side is down as it will go in either way and screw up the timing. Use great CARE to support the timing plate so you do not knock the sensor of the dist housing. Thats the $300 mistake. Reassemble in reverse order you propaply have ruined the top bearing so replace it and recheck the timing on the engine. PIECE OF CAKE

 

[74 glascraft]

Re: 1150 merc

thanks laddies i got my rotor changed but my timing was off a cog on the distributor . i need to start from scratch with my timing and throttle position . there is a dot on the timing belt pully and a dot on the aluminum bracket where the 3 bolts that hold the dist are is that the #1 pos for the rotor at tdc.

 

[Laddies]

Re: 1150 merc

Yes thats a timing mark