No Spark.....

[enginegremlins]

Just bought a boat that came with a 1984 50hp Force. I have no spark in either cylinder. Anyone have any ideas where to start?? I changed plugs so far....<br /><br />Also, anyone have a better price on coils...One is cracked, a replacement is $115....OUCH!!<br /><br />Thanks.

 

[eurolarva]

Re: No Spark.....

Check to see if the motor has an active lanyard switch. IF it has a lanyard switch and it is not plugged in the motor will not get a spark

 

[novicetech]

Re: No Spark.....

If the motor has sat for awhile it also could be the points, which are located under the flywheel, I think. Just because one of the coils are cracked, does not make it bad, I had a 79 chrysler 45 that both coils had cracks in them. I just filled the cracks with liquid electrical tape. Motor ran fine. I used a harmonic balancer puller to get the flywheel off, if you decide to try this yourself make sure you get a manual and follow lapping procedure and torque specs., to the tee. You dont want that flywheel coming loose at 5500 rpms.

 

[Generator Mechanic]

Re: No Spark.....

Well I am new to working on these but this is what I have learned thus far:<br /><br />1. If you have no spark get a manual.<br />2. Reference to my manual says disconnect the blue stator wires at terminal block. Set multimenter to 400DVA; crank the engine and should get 300 volts or more if it is intermittent replace the stator.<br /><br />3. The schematic is rather simple on it..check all your connections on the terminal board for loose or corroded wires.<br /><br />4. Like eruo mentioned check your shorting switch..<br /><br />5. If your connections from the stator or trigger are plug in take them apart and look for corrosion or shorted pins.<br /><br />I am a proud owner of an 85/86 85HP cross breed due to mid year changes. I had to have the manual to make sense of the outboard and electrical system.<br />www.outboardparts.com carry alot of force OE stuff as well as have a good online troublshooting procedures to follow if you dont have a manual right away.<br />Good Luck..

 

[enginegremlins]

Re: No Spark.....

Thanks guys - I just ordered a manual for it. I will start checking everything very soon. If I ever figure it out, I'll report back about what I found. <br /><br />One more question though. If I end up needing to pull the flywheel off....what will I need to do that??

 

[eurolarva]

Re: No Spark.....

Harmonlc balancer with a big wrench. You will need a torque wrench when you put it back together.