GCK370GREC2 GRASS CATCHER Parts group GCK370GREC2 K01000 BASE K07000 LOWER LIFT ARM K30501 FRONT FRAME K40001 DUCT K60000 TOP COVER K80000 GRASS CATCHER LABEL U00201 DISCHARGE KIT [OPTION] U00300 SENSOR KIT [OPTION] sale parts diagram catalog online construction equipment excavator tractor