That would be a problem , Darren .
Fortunately , my bike does not do that . The oil is not suppose to leak past the pump . How much oil does the motor go through ?
Maybe you need a new pump ?
PUMP, OIL
16100-02330
$87.49
http://www.partspitstop.com/oemparts/a/suz/50d3eb15f8700230d8b4aebb/oil-pump
A less expensive option might be to install an in-line shut off valve ( $2.47 ):
Pete . 🙂
