Setting timing on 86 merc 140

[doman]

Could some giude me how to do it right ..i got distributor out of the boat at the moment i was replacing points ,condenser, rotor , but its going in tomorrow ..is there only one position the distributor will fit in? once i get it in where do i start ajusting timing ?<br /><br />thanks<br /><br />Dom

 

[hondon]

Re: Setting timing on 86 merc 140

Why did you remove the distributor to change a set of points?Are you talking about just the cap?

 

[affa]

Re: Setting timing on 86 merc 140

Hi<br />it needs to go back in the way it was. Since you didn't mark its position, you will need to find "top dead center." Take the first spark plug out, (that's #1 - the one near the front of the motor). Put your finger loosely over the hole while someone turns the starter motor. You will feel alternating pressure and vacuum. When the motor is on the compression, or "pressure" stroke, let go of the key. You should be able to see the timing marks begin to line up. If not, "bump" the starter over a little, still making sure you are on the compression stroke.<br /><br />When the timing marks line up to top dead center, (or more accurately eight degrees before top dead center), put the distributor back in.<br /><br />The slot you see in the bottom of the motor that connects with the slot on the distributor is your oil pump. You will need to visualize where you want to distributor to end up. Notice it moves clockwise as it drops down the hole. Turn the oil pump with a long screwdriver so that it will line up with the distributor when it drops down. Then turn your distribtor body so that it lines up with the number one spark plug wire.<br />Regards<br />Affa

 

[doman]

Re: Setting timing on 86 merc 140

cool thanks....<br />Reason why i took it out i was changing the lifters gasket and also painting the engine and distributor,coil and fuel pump was in my way<br /><br />Thanks<br /><br />Dom