7.5 merc

[pontoon chief]

Have a 7.5 merc around 1970,Motor is in fairly good condition,so it is wortyh fixing.<br />There is spark when you first test it with a spark tester.However after a short time,several minutes the spark is gone.If you let the motor sit for a time,the spark will again be there when you test it.<br />With the plugs in,it will putt a few times before going dead.<br />Any ideas?

 

[Laddies]

Re: 7.5 merc

It sound like a early CD ignition with points and cracked insulaters whats the seriel number

 

[pontoon chief]

Re: 7.5 merc

3015212,it has no points.....

 

[pontoon chief]

Re: 7.5 merc

It appears to have two coils mounted towards the back of the motor,and under the flywheel is a stator coil.

 

[Chinewalker]

Re: 7.5 merc

If it is a 1970, then it does have points. The stator coil (or 'donut') surrounds the area where the points are. There may also be a cover over the points. If you have intermittent spark, then you should go ahead and replace the points with new... Check all wiring for cracking/splitting, too....<br /><br />- Scott

 

[Laddies]

Re: 7.5 merc

It's a 70 by the serial number so try my first post, it has pts and insulater blocks--Bob

 

[pontoon chief]

Re: 7.5 merc

thanks I'll pull the flywhell again and check for points.Will I have to take off the five pronged coil on top?Or are they right out in the open?