John Deere GM3060 Lawn Mower User Manual


 
18 Troubleshooting
5WPMAN0705 (Rev. 5/9/2008)
TROUBLESHOOTING
MOWING CONDITIONS
PROBLEM POSSIBLE CAUSE SOLUTION
Grass cut higher in center of
swath than at edge
Height of mower higher at front
than at rear
Adjust mower height and attitude so
that mower rear and front are within
1/2 inch of same height. See
instructions on page 11.
Loose blade Check blade hardware.
Grass cut lower in center of
swath than at edge
Height of mower lower at front
than at rear
Adjust mower height and attitude so
that mower rear and front are within
1/2 inch of same height. See
instructions on page 11.
Loose blade Check blade hardware.
Streaking conditions in swath Conditions too wet for mowing Allow grass to dry before mowing.
Blades unable to cut that part of
grass pressed down by path of
tractor tires
Slow ground speed of tractor but keep
engine running at full PTO rpm.
Cutting lower will help. Adjust tractor
tire spacing if possible.
Dull blades Sharpen or replace blades.
Loose blade Check blade hardware.
Material discharges from mower
unevenly; bunches of material
along swath
Material too high and too much
material
Reduce ground speed but maintain
540 rpm at tractor PTO, or make two
passes over material. Raise mower
for the first pass and lower for the
second and cut 90-degrees to first
pass. Raise rear of mower high
enough to permit material discharge,
but not so high that conditions listed
above occur.
Grass is wet Allow grass to dry before mowing.
Slow ground speed of tractor but keep
engine running at full PTO rpm.