Operator`s manual
MAINTENANCE
RC12 03/09 Maintenance Section 5-4
© 2009 Alamo Group Inc.
MAINTENANCE
CUTTER SHAFT
Routinely inspect cutter shaft for and replace any worn or damaged blades. When replacing worn blades
always replace blade set directly opposite, (180 degrees) otherwise cutter shaft will be out of balance. Inspect
bushing and bolt for wear and replace if necessary. Remove any debris which may become entangled around
cutter shaft or bearings. Stop machine at first sign of excessive vibration and inspect cutter shaft and bearings.
BLADE REPLACEMENT
• Remove locknut (item 1), bolt (item 2), and
inspect bushing (item 3) and bolt for wear.
Replace if worn.
• Place new knives on bushing and insert
between reel clip.
BELT ADJUSTMENT AND REPLACEMENT
To adjust belt, loosen both pivot bolts slightly (item
1), and tighten nut on tension rod (item 2), which
pivots drive assembly forward to tension belt.
Correctly tensioned belt should require a maximum
of 85 lbs force across entire band to deflect belt 3/8"
as illustrated. Do not over-tension belt as excessive
loads will be placed on bearings. Tighten pivot bolts
and lock in place with jam nuts.
To replace belt, loosen both pivot bolts (item 1),
undo nuts from tension rod (item 2) and rotate drive
tube assembly toward deck. Install new banded belt
and rotate drive assembly forward by placing pry-
bar in tube on front of assembly. Feed tension rod
through slot as the tube is rotated forward and
attach washer and adjustment nut. Before
tensioning belt lightly tighten pivot bolts to remove
play from pivot points. Tension belt as outlined
above. Always check belt alignment after installing
new belt.