MTD 700 Series - Run Circuit; Reverse Caution Mode

Series 700 Lawn Tractor
108
Run Circuit / Reverse Caution mode
NOTE: The 7-pin and the 8-pin OCR systems have basically the same circuit, the only difference is that the 8-
pin system has a second ground for the OCR module.
1. With the key in Reverse Caution mode, A1 gets power from the B terminal, just like the normal run position.
2. In addition, A2 is internally connected to the L terminal. L is normally used for the lighting circuit.
2a. In this case, a separate lighting circuit draws power from A1.
2b. L is connected to ground.
3. The OCR module arms when it gets a ground signal from A2 through the white wire to the “A2 pwr” terminal on
the OCR module.
See Figure 7.24.
4. The OCR turns on when it is armed and the orange triangle is depressed. A red LED will come on to indicate
the system is on.
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Figure 7.24
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