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Sat, Sep 22, 12 at 14:34
| I have a Cub 2166 and the engine was shutting-off when I released the brake pedal. I tripped the switch to keep the engine running but, as soon as I pulled on the PTO handle, the engine died. I don´t think both, the brake and the PTO switch, broke at the sime time. There may be another relay, switch, etc. that is not working properly and causing the switches to fail but I am no expert and would welcome any comments.
Thanks. |
Follow-Up Postings:
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| My guess is a seat switch or circuitry issue for the seat switch. |
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- Posted by bill_kapaun Z8 Orygun (My Page) on Sun, Sep 23, 12 at 3:46
| Ditto what Tom said- |
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| Could it be that the switches are wired in 'series'? So it could be and either-or situation. |
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- Posted by bill_kapaun Z8 Orygun (My Page) on Sun, Sep 23, 12 at 9:26
| "Could it be that the switches are wired in 'series'? So it could be and either-or situation." IF that were the case, the "good" switch would open the kill circuit. Seat switch typically "trumps" the other kill switches. |
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| I would think that the brake pedal switch was so that it wouldn't turn over, (crank), unless someone was stepping on the brake .. . of course they would have to sit in the seat to step on the brake. I wonder what the OP meant when he said he 'tripped' the switch to keep the engine running. The seat switch is obviously a 'N.C.' switch, which would ground the coil if no one was in the seat,(or fell off the mower). I'm not sure what the PTO switch is for. I'm sure there must be a 'truth table' in the service manual, for diagnosing how all of these switches work together. |
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- Posted by bill_kapaun Z8 Orygun (My Page) on Mon, Sep 24, 12 at 20:31
| Assuming a seat switch is NC can be a BAD assumption, if you don't have a schematic to confirm that. (I don't) Sometimes, they deliver (or not) 12V to an Operator Presence Relay that switches the kill wire. |
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| That's true, it is not good to assume. But they way manufacturers are always trying to build things cheaper, why use a relay when a grounding switch alone,will do the job. |
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- Posted by bill_kapaun Z8 Orygun (My Page) on Tue, Sep 25, 12 at 9:01
| To fool people that try to disable safety switches. |
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