Land-pride FM3188 User Manual download pdf (Page 21)

Section 4: Maintenance & Lubrication

FM3188 & FM4188 Flail Mowers 309-523M

Table of Contents

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

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Land-pride FM3188 User Manual Page 21

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