Iv got a 62" toro 74240 (Z286E Z Master ) with under 1k hours. pulled it out of the shed today and sent to do some maintenance and lo it wont start The battery was dead so iv jumped my car battery to it. short the seat sensor, put on the parking brake, put the handle bars out and turn the key. all that happens is the fuel pump comes on. if i jump the posts on the starter solenoid it sounds like the starter turns, but does not engage the motor. Not sure where to go from here. If it was simply a bad starter it should try to spin with the key? Thanks for the help.