How do i Replace drive belt on mtd yardman dx-70?

Answer 1

Securely chock front wheels. Jack up rear. Securely support on axle stands or blocks under rear wheels. Unbolt towing eye to access nut beneath which secures variable speed pulley. Unbolt and remove variable speed pulley. Unbolt and remove idler wheel next to variable speed pulley. Now, slightly more difficult, remove double pulley ( upper drive and lower cutter belt ) from engine drive shaft. Long reach 17/16 ? Socket necesary from engine shaft. Prevent. engine turning (DISCONNECT SPARK PLUG just in case) using bar through hole in lower (cutter) pulley - may need to tap down on lower pulley ( carefully - don't damage pulley ) to release pulley shaft from engine shaft ( this is keyed ). Locate new belt and re-assemble engine pulley. Route both belts and continue to reverse assembly.