Section 8: Troubleshooting Important Safety Information
Table of Contents
FDR1648, FDR1660 & FDR1672 Rear Discharge Grooming Mowers 310-366M12/2/21
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Section 8: Troubleshooting
Troubleshooting Chart
Problem Solution
Belt slipping
Plugged grooming mower Unplug and clean mower deck.
Debris in sheave Remove belt guard shields and clean sheaves.
Low belt spring tension Tighten spring take-up bolt.
Worn belt Replace belt.
Patches of uncut grass
Tractor rpm too low
Mow at full throttle (540 power take-off rpm). Check
power take-off speed and tractor engine.
Ground speed too fast Shift transmission to a lower gear.
Blade damaged or dull Sharpen and balance or replace blade.
Incorrect belt tension Re-tension belt. Refer to “Belt Tension” on page 25.
Blade rotation wrong Install correct rotation blade.
Excessive vibration
Driveline bent Replace bent drivelines.
Blade broken or bent Replace blade.
Cross not centered with yoke
Disassemble and inspect for incorrectly located needles
or damaged bearing cap.
Debris in sheaves or on mower
deck
Remove belt guard shield and clean debris from belt
area and sheaves.
Sheaves damaged or out of
alignment
Replace sheaves or align.
Drive belt damaged
Replace drive belt - check for belt contacting deck
component.
Inadequate clearance between
belt guard shields and belt
Remove belt guard shields and clean debris from belt
area and sheaves.
Gearbox noisy Low lubricant level Check lubricant level.
Blades scalping grass
Cutting too low Raise cutting height by adjusting wheels.
Ridges in terrain Change mowing pattern.
Fast turning speed Reduce speed on turns.
Uneven cut
Ground speed too fast Shift to a lower gear.
Mower not level Level mower.
Incorrect belt tension Re-tension belt. Refer to Belt Tension on page 25.
Dull blades Sharpen blades and balance or replace.
Tractor loaded down by the
mower
Tractor rpm too low
Mow at tractor’s rated power take-off rpm (540 power
take-off rpm).
Ground speed too fast Shift to a lower gear.
Grass too wet Wait until grass dries.
Grass too tall Raise cutting height of mower and cut grass twice.
Debris wrapped around mower
spindles or blades
Clean mower.
Tractor power take-off
horsepower rating is too low
Raise cutting height of the mower and cut the grass
twice. Shift to a lower gear. Use a tractor with more
horsepower.
Blades lift too high
Change to lower lift blades if they will cut the grass
satisfactorily.
Tractor rpm too low
Mow at tractor’s rated power take-off rpm (540 power
take-off rpm).
Ground speed too fast Shift to a lower gear.
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