Hello everyone, I am brand new to this site and am a brand new lawn tractor owner. I bought a case hydraulic lift 446 last year, it has an onan 18 hp and I have no idea what year it is. Last fall I brought it home and rode around a little and it worked great, then it didn`t. It had electrical problems and I replaced the battery wires, then it started no problem once or twice and I havn`t been able to get it started since. I am taking a small engines course so I have an idea what everything is and how everything works but I just can`t figure out why it won`t start. I have tried 3 different batteries and they all sound the same, like they are almost dead and the engine barely wants to crank. I bought a compression tester and its hardly registering any compression at all. WOW any help would be great, thanks
model b48m-ga018 3631a
ser c803513167
model b48m-ga018 3631a
ser c803513167