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Repair information and troubleshooting for Craftsman-brand riding lawnmowers.

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Why does my battery drain on my mower?

With a charged battery mower starts and runs well, but once turned off the battery has to be recharged to start again.

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Battery is either weak/dying or your charging system is not functioning properly. If charged and running you should get 13.5 to 14.0 volts across the battery terminal if the charging system is working. Another less likely possibility is a parasitic current drain when the unit is turned off. You can place a test light in series with either battery terminal to test for this. If the light glows (even dimly) you have something drawing current which will drain the battery over time.

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