MTD Products, Inc. Model # 13am675g062 14.5hp Briggs & Stratton.
I lost the keys to this lawn tractor and ordered another ignition switch, which had 5 terminals while the original had 6. I put it on anyway, turned the key, heard a faint spark and nothing happened. Later I found the keys to the old ignition switch, put it back on, turned the key and nothing happened.
__ __ __ red green red/black __ __ yellow red/white __ orange
The hash marks are terminals. The new ignition switch lacks the red/black.
With my meter I mad a truth table for both of the switches.
old ignition switch
( \ ) OFF red/black =| red/white red/black = red red/white = red all others open
( | ) RUN red/black = green red/black = yellow green = yellow all others open
( / ) START green = yellow green = orange yellow = orange all others open
new ignition switch ( \ ) OFF green = orange all others open
( | ) RUN red = red/white all others open
( / ) START yellow = red/white yellow ~ red all others open
where = means the two wires connect through the ignition switch, and ~ means the connection is neither open nor closed but has some resistance.
Testing the wires on the plug that plugs into the ignition switch, none have voltage. Red, green and yellow are all grounded. Orange is grounded too when the clutch pedal is depressed. The tractor battery is 12 volts and fully charged.
I cut the red/white wire which left two ends. On the end that goes to the ignition switch, I wired it directly to the positive terminal of the battery.
I cut the yellow wire which left two ends. On the end that goes to the ignition switch, I wired it directly to the solenoid coil.
I cut the orange wire and left the connection open.
I cut the green wire and left the connection open.
I left the red/black wire off and the connection open.
I didn't cut the red wire and left the connection closed.
I jumped the yellow wire with the red wire.
When 12 volts goes to the red wire a relay clicks somewhere down in the engine. I suspect it to be the engine kill relay, N.C. SPST.
As a result, the tractor starts and runs for a few seconds, but then stalls.
Where did I go wrong? Can any of you make any sense of this?
Jon Giffen Tall grass in Bellaire, OH