Rotor knife replacement, Fm3188 cutting knife replacement, Fm4188 hammer knife replacement – Land Pride FM3188 User Manual
Page 21: V-belt installation, Caution, Table of contents rotor knife replacement
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Section 4: Maintenance & Lubrication
FM3188 & FM4188 Flail Mowers 309-523M
Rotor Knife Replacement
Frequently check rotor knives to make sure they are in
good working condition and properly secured to the rotor.
Replace worn or damaged knives with new knives.
FM3188 Cutting Knife Replacement
Refer to Figure 4-3:
The cutting knives have a cutting edge on both the
leading and trailing edges. When the leading edge wears
out, turn existing pair of knives around 180 degrees and
reinstall. Replacement knives should be the same length
as existing knives to maintain rotor balance.
1.
Remove nylock nut (#1), bolt (#2), and spacers (#3).
2.
Remove existing cutting knives (#4) or turn existing
pair of knives around 180 degrees and reinstall.
3.
Install cutting knife with existing bolt, spacers, and
nylock nut.
4.
Tighten nylock nut to proper torque.
FM4188 Hammer Knife Replacement
Refer to Figure 4-4:
Replacement knives should be the same length as
existing knives to maintain rotor balance.
1.
Remove nylock nut (#1) and bolt (#2).
2.
Remove old hammer knife (#3) and install new knife
with existing bolt and nylock nut.
3.
Tighten nylock nut to proper torque.
V-Belt Installation
Refer to Figure 4-5:
!
CAUTION
Belt drive system is under spring tension; use care to avoid
bodily harm!
1.
Remove belt guard fender (#1) and belt cover (#2).
2.
Remove belt tension by loosening the belt tension
bolt (#3) until belt can be removed.
3.
Remove old belts from pulleys and install new belts.
4.
Tighten belt tension bolt. See “Belt Tension
Adjustment” on page 17.
5.
Reinstall belt guard (#2) and belt guard fender (#1).
6.
Tighten bolts to the proper torque.
IMPORTANT: Make sure replacement knife is the
same length as the others on the mower. This will
keep the rotor rotation balanced.
IMPORTANT: Replace cutting knives with Land
Pride fine cutting knives or hammer knives only.
Fine Cutting Knives (FM3188 Only)
Figure 4-3
Hammer Knives (FM4188 Only)
Figure 4-4
Belt Installation
Figure 4-5
24985
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2
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4
24869
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2
3
24865
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