The differences that matter.
01
60-inch against 70-inch
FM2560 cuts 60 inches; FM-78H cuts 70.
FM-78H covers wider compact tractors in one pass.
02
Offset positions against hydraulic side shift
FM2560 uses center or 8-inch right-offset hitch positions. FM-78H shifts hydraulically and needs a rear remote; WoodMaxx supplies two hoses.
FM-78H adjusts on the move.
- Source: Printed p14 tractor requirements 33–80 hp (basis not stated); pp16–17 center or 8-in. right-offset hitch positions; p39 hammer rotor 333-135A with 16 hammers ↗
- Source: Product page: hammer option, hydraulic side shift, 30–65 PTO hp, 70-in. cut, 804 lb mower plus 39 lb shaft, price ↗
- Source: Printed p40 / PDF p41: FM-62 20–45 PTO hp (Y-blades) and 24–45 (hammers), 774 lb, FM-62H 860 lb; FM-78 and FM-78H 30–65 PTO hp, 880 and 968 lb; hydraulic side shift on H models only ↗
03
Category 1 against Category 1/2
FM2560 is listed Category 1. FM-78H lists Category 1 and 2.
Category 2-only tractors fit FM-78H.
- Source: Printed p14 tractor requirements 33–80 hp (basis not stated); pp16–17 center or 8-in. right-offset hitch positions; p39 hammer rotor 333-135A with 16 hammers ↗
- Source: Printed p40 / PDF p41: FM-62 20–45 PTO hp (Y-blades) and 24–45 (hammers), 774 lb, FM-62H 860 lb; FM-78 and FM-78H 30–65 PTO hp, 880 and 968 lb; hydraulic side shift on H models only ↗
04
33–80 hp against 30–65 PTO hp
FM2560: 33–80 hp, basis not stated. FM-78H: 30–65 PTO hp.
Over 65 PTO hp only FM2560 fits; under 30 PTO with 33+ engine hp only FM2560.
- Source: Printed p14 tractor requirements 33–80 hp (basis not stated); pp16–17 center or 8-in. right-offset hitch positions; p39 hammer rotor 333-135A with 16 hammers ↗
- Source: Printed p40 / PDF p41: FM-62 20–45 PTO hp (Y-blades) and 24–45 (hammers), 774 lb, FM-62H 860 lb; FM-78 and FM-78H 30–65 PTO hp, 880 and 968 lb; hydraulic side shift on H models only ↗

