What does M mean on ignition switch?

What does M mean on ignition switch?

“M” (magneto), is found in applications where the key switch functions to kill the ignition spark by shunting the magneto primary wire (kill wire) to ground when the key is turn OFF. Like.

What does C stand for on ignition switch?

Ignition Switch Wiring

B BATTERY Battery positive via fuse
A or I ACCESSORY or IGNITION Accessory loads; engine ignition
S START Engine starter solenoid coil
C CHOKE Engine primer solenoid coil

What do the letters on a starter mean?

Starter solenoid terminals: B = battery terminal, S = start terminal, M = motor terminal.

What does S and I stand for on a starter solenoid?

The smaller terminals are typically iron bolts: Solenoid terminal S (or 50) is for the control wire connecting to the starter relay and ignition switch. If there is a 4th terminal, this can be terminal R (connects to a ballast resistor) or I (connects to the ignition coil) — this terminal is usually not used.

Why is my boat motor not powering?

If you have checked the battery switch and charged the batteries, but your boat engine still won’t start, check the battery cables. Make sure the connections that run between the engine and the battery are not loose or corroded. Reconnect or replace any battery cables that have become disconnected or damaged.

Is there a free wiring diagram for a Johnson outboard motor?

– We are building up a repository of Free Wiring Diagrams for outboard motor engines for manufacturers such as Johnson/Evinrude, Mariner, Mercury, Honda, Suzuki, Tohahsu and more. Troubleshoot your outboard starting or ignition system problems with this essential resource.

How does an outboard motor ignition switch work?

Most outboard motors are operated and started using a key ignition switch. The switch configuration and wiring is fairly standardized. This description is specific to OMC outboard motors but will be typical of most. The ignition switch on most outboard motors is operated by a key, much like used traditionally in vehicles.

What is the purpose of the m terminal on a switch?

The M terminals may also be used as a wiring point for connecting another switch in parallel. This second switch is typically operated by a safety lanyard. When the second switch operates, it also connects the two M terminals together, killing the engine, even if the ignition switch is not in the OFF position. See the wiring pictorial below.

Where does the push switch connect to the primer circuit?

In either the ON or START positions of the rotating switch, the push switch will connect the B terminal to the C terminal, supplying battery voltage to the engine primer circuit. The B terminal is also connected to the A (or I) terminal in RUN and to the A (or I) and S terminal in START.