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Section 7 Troubleshooting
7/18/08
DM35 Series (S/N253045+) Disc Mowers 309-502M
Land Pride
Table of Contents
Section 7 Troubleshooting
Problem Cause Solution
Not cutting clean
Dull Blades. Replace blades.
Mower not level. Adjust machine.
Ground speed too fast. Reduce ground speed.
Blades locked back. Free blades.
Streaking conditions in swath
Conditions too wet for cutting. Allow grass to dry before cutting. Slow ground
speed of tractor but keep engine running at
full PTO rpm.
Dull blades. Sharpen or replace blades.
Wet mud build-up between skid shoes Clean area between skids. Raise cutting
height.
Gearbox noisy
Rough gears. Run in or gear failure.
Worn bearing. Replace bearing.
Gearbox leaking
Damaged oil seal. Replace seal.
Bent shaft. Replace oil seal and shaft.
Oil seal not sealing in the housing. Replace seal or use a sealant on OD of seal.
Oil level too high. Drain oil to proper level.
Gasket damaged. Replace gasket.
Bolts loose. Tighten bolts.
Uneven stubble
Too much tilt on cutter bar. Reduce tilt.
Low PTO speed. Increase engine speed to run PTO at 540
rpm.
Blades not installed correctly. Make sure that the arrow on the knife upper
face is pointing in the direction of rotation of
the disc.
Low disc speed. Check belt for correct tension.
Dull or broken blades. Replace blades.
Stubble too long
Incorrect angle on cutter bar. Change cutter bar angle using tractor top link.
Insufficient cutter bar down pressure. Adjust compensating spring tension.
Soil built up in front of cutter bar
Very wet conditions Adjust main frame height by shortening safety
chain as necessary.
Too much cutter bar down pressure Adjust compensating spring tension.
Machine breaking back too easily
Insufficient tension on break-away
spring washers.
Tighten break-away spring.