Kill button on 1970 9.8 hp 110 question

[tacx]

How to check the kill button on my 1970 9.8 hp 110 engine. I am wondering if it is the cause of my no start issue. I have read where some buttons are normally closed and some are normally open contacts? My button looks to have just one wire going from the back of the button to up under the flywheel.
Thanks
Tom

 

[Scott Danforth]

disconnect it. the kill switch goes from ground to your ignition and grounds out the ignition.

 

[tacx]

Thank you Scott,
Doing research, another member said not to use the kill button because it can damage the doughnut under the flywheel? Any truth to thst?
Thanks
Tom

 

[RCO]

Your 1970 model has magneto ignition, there is no way you can damage anything by using the kill switch. It is a normally open circuit .

 

[Scott Danforth]

Thank you Scott,
Doing research, another member said not to use the kill button because it can damage the doughnut under the flywheel? Any truth to thst?
Thanks
Tom

Only if you stuff the button under the flywheel with the motor running

 

[racerone]

So does it have the " phasemaker " ignition , yes or no ?----Coils under the flywheel or mounted elsewhere ?----Does phasemaker run with stop circuit open or closed ?

 

[tacx]

It has the Thunderbolt ignition. I don't know what the "phasemaker" is?

 

[racerone]

The other question was " are the ignition coils mounted under the flywheel or somewhere else " ---but alas no answer on that one important issue here.

 

[tacx]

This is the engine

 

[flyingscott]

1970 is a phasemaker ignition. Yes the kill switch can damage the stator assembly if it is used while running on muffs. The phasemaker is a. backwards hybrid ignition ground is part of the ignition system. On a normal ignition the kill switch bleeds the electrical energy to ground. On a phasemaker the switch stops the electrical energy from going to ground this causes it to build up in the stator damaging it. When the motor is in the water the exhaust pressure slows the motor fast enough to prevent damage. On muffs the motor spins to long causing damage. To check the switch disconnect it from the white insulator on the side of the block. If the motor has spark itnis the switch. Go to www.cdielectronics.com for the troubleshooting procedures. You also have the wrong coils on that motor which could be damaging the stator.

 

[tacx]

flyingscott, thanks for your response,
now I have even more questions.

1. So, basically, to test the kill button, with my multi meter, after I isolate it from the motor, it should be normally closed contacts an should open when pushed? Right?

2. "The wrong coils"?

3. See the attached picture. It looks like the engine has been recently rewired. The wire from the kill button goes directly to the stator. I'm assuming that there should be an isolated bridge on the two screws and each wire (one from the button and the one from the stator) should be terminated on the bridge? I'm assuming that is only done to ease removal of either component?

4. Would I be better off just using the choke to kill the engine?I



Thanks,
Tom

 

[flyingscott]

Yes you are better off using the choke to kill the motor. Those are not mercury ignition coils ,probably because somebody did not want to pay what Mercury wants. Using the wrong ignition coils can damage the stator. Mercury phasemaker coils are apecific for that ignition and are needed for that ignition to work correctly. Take your serial # and look up the correct ignition coil and you will see the difference. The kill switch should be connected to the stator on an insulated block on the side of the motor.

 

[tacx]

Yikes, looked up the correct coils $270.00 for a set of coils is more than i can do right now. I'm starting to realize it isn't cheap to own a old motor. Hope the ones that are on there will work.
Tom

 

[Downwindtracker2]

Leroy said on working on a 4.5, "You better be sitting down with a Jim Beam in hand when you check the prices." I'm going to pick up one this evening, $50 .He pulled the gear box off and realized the cost of parts.

 

[tacx]

Sooo, the ignition coils are not under flywheel. See pics above. So what kind of ignition does that make it?

 

[flyingscott]

Post # 10 tells you it is a phasemaker ignition. Thunderbolt is a generic name for a couple of different Mercury ignition systems.

 

[flyingscott]

edit

 

[flyingscott]

edit

 

[Downwindtracker2]

A capacitor discharge points hybrid is what I understand it to be.