I Just put a freshened up 660 Grizzly motor in a Rhino. The motor seems to run fine but is turning over slowly. The screen will blank out when is hesitates and then come back on as the motor starts to turn over. Sometimes I will have to turn the key a couple times for it to actually turn over. Once it does it starts fine. I have a new battery on the way but have been using a new marine battery until then. I know the battery is good but the jumper cables could be an issue. I should know if the connection issue on the jumper cables is causing it tomorrow. If that isn't the issue where should I go next? I will probably check the valves today but other than that is there anything that could be causing my problem? Thanks for the help.