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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 spr ing tension.
Soil built up in front of cutter bar Very wet conditions Adjust main frame heightby 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.