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ASSEMBLY
FX17/FX21 02/11 Assembly Section 3-3
© 2011 Alamo Group Inc.
ASSEMBLY
CHANGING ROTATION OF CUTTERSHAFT
Standard cuttershaft rotation is forward rotation as shown in the diagram. To reverse cuttershaft rotation, the
wing drive gearbox must be flipped over 180 degrees and the center mower drive components moved to the
opposite side. When changing rotation of cuttershafts, (coarse cut only) knife pins on wing mower sections
must be reinstalled in opposite direction.
Center Cuttershaft Rotation Reversal
1. To reverse direction of cuttershaft rotation, three
left hand parts must be ordered: belt guard,
outboard bearing plate, and an idler pulley arm. A
front trash deflector is also required. Refer to the
parts section of this manual for part numbers and
ordering information.
2. With the mower housing securely blocked up,
remove cuttershaft and turn 180 degrees.
3. Remove gearbox cuttershaft drive pulley and
outboard bearing plate. Attach new mounting plate
to opposite side of mower housing.
4. Remove four gearbox bolts and rotate gearbox 180
deg. to new position.
5. Install cuttershaft pulley, gearbox output pulley,
idler arm pulley assembly, and belt on housing
right side.
6. Attach new belt guard.
Wing Cuttershaft Rotation Reversal
1. Remove skid plate, front cover plate, and front
shield.
2. Loosen powerband belt tensioner and remove
powerband belt from gearbox sheave.
3. Remove four gearbox bolts and remove gearbox.
4. Change positions of gearbox vented plug and drain
plug.
5. Rotate gearbox 180 deg. and remount.
6. Replace powerband belt and retension.
7. Reattach skid plate, front cover plate, and front
shield.