I ordered a Stens 430-249 It crosses over to:
ARIENS 03115200
GRAVELY 019223
JACOBSEN 129746
JACOBSEN 129846
JOHN DEERE AM103286
JOHN DEERE AM32318
NATIONAL 1A808B
TORO 12-8140
It has the following pin out:
As the diagram shows it is for a coil ignition (no "M" terminal)
Some of the tractors that use this one are:
5000 series tractor with a Kohler coil ignition
24G
8199KT
8179KT
Pro16
Pro8
All Onan engines from the 800s and up unless you have one with the electronic ignition (fairly rare)
-----------------------
The other switch I ordered today was at Stens 430-070
It crosses over to:
GRAVELY 044767
JOHN DEERE AM102544
JOHN DEERE AM31995
LESCO 050102
The pinout looks like this:
This one is for a magneto. The "M" terminal is grounded to the case of the switch when in the "off" position.
Some of the tractors this one is used on are the Briggs 16hp single cyl on 4 wheel tractors.
On the Gravely G series 4 wheel tractor, the ignition switch used is the coil type (no "M" terminal). It does not matter which engine is installed. What Gravely did was to change the wiring of the relay depending on the engine type installed. The relay is really what controls the ignition. The ignition switch controls the relay. The wiring diagrams are in the appropriate G series Owners Manual.
Having said that, if someone has modified the wiring, removed components, etc. then it is impossible to predict which switch is needed as they may have completely re-engineered the ignition controls and used a different switch.
It is likely best to identify what is currently installed and replace it with the same type. As with all things, there are exceptions.
ARIENS 03115200
GRAVELY 019223
JACOBSEN 129746
JACOBSEN 129846
JOHN DEERE AM103286
JOHN DEERE AM32318
NATIONAL 1A808B
TORO 12-8140
It has the following pin out:
As the diagram shows it is for a coil ignition (no "M" terminal)
Some of the tractors that use this one are:
5000 series tractor with a Kohler coil ignition
24G
8199KT
8179KT
Pro16
Pro8
All Onan engines from the 800s and up unless you have one with the electronic ignition (fairly rare)
-----------------------
The other switch I ordered today was at Stens 430-070
It crosses over to:
GRAVELY 044767
JOHN DEERE AM102544
JOHN DEERE AM31995
LESCO 050102
The pinout looks like this:
This one is for a magneto. The "M" terminal is grounded to the case of the switch when in the "off" position.
Some of the tractors this one is used on are the Briggs 16hp single cyl on 4 wheel tractors.
On the Gravely G series 4 wheel tractor, the ignition switch used is the coil type (no "M" terminal). It does not matter which engine is installed. What Gravely did was to change the wiring of the relay depending on the engine type installed. The relay is really what controls the ignition. The ignition switch controls the relay. The wiring diagrams are in the appropriate G series Owners Manual.
Having said that, if someone has modified the wiring, removed components, etc. then it is impossible to predict which switch is needed as they may have completely re-engineered the ignition controls and used a different switch.
It is likely best to identify what is currently installed and replace it with the same type. As with all things, there are exceptions.