hi I have a wheel horse b111 which I have recently brought It drives fine but I noticed underneath the belt rubs and and I cant seem to work out how to stop it also the hole for the high low range lever does not have a lever in it I thought this was as it was new as it is a six speed and has six gears but after watching YouTube videos six speeds do have the lever for high low range after looking underneath I noticed it has only one belt pulley (for the clutch) is this as it is supposed to be or not how can I fix it if it is not thanks