MAINTENANCE
DHM 8, 9, 10 05/19
Maintenance Section 5-2
© 2019 Alamo Group Inc.
MAINTENANCE
BEFORE PERFORMING INSPECTIONS, MAINTENANCE OR ADJUSTMENTS OF THE
MOWER, STOP THE TRACTOR ENGINE, REMOVE THE KEY, AND SECURE PARKING
BRAKE. WAIT FOR ALL ROTATING MOTION OF THE MOWER TO STOP AND
DISCONNECT THE DRIVELINE SHAFT. BLOCK THE MOWER AND TRACTOR TO
PREVENT MOVEMENT BEFORE PERFORMING ADJUSTMENTS OR MAINTENANCE.
AFTER MAINTENANCE OR ADJUSTMENTS ARE COMPLETED, REMOVE ALL BLOCKS
AND TOOLS USED IN MAINTENANCE OR ADJUSTMENTS. FAILURE TO CLEAR THE
AREA AROUND THE MOWER BEFORE OPERATION COULD RESULT IN OBJECTS
BEING THROWN TOWARD THE OPERATOR OR BYSTANDERS.
Disk and Blade Maintenance
For longer service file, carefully check discs, blades and bolts daily. More frequent checks will have to be made
if mowing has been on stoned ground and after impact with an obstacle. When replacements are necessary,
use only Bush Hog recommended parts. Use of parts not approved by Bush Hog could void the warranty.
Worn, bent or blunt blades will require more power. To cut efficiently, replace worn or
damaged blades as soon as possible. During operation, the blades will reach a speed of
3000 RPM. It is very important that the nut and bolt be in good condition and torqued to 236
ft./lbs.
A BENT BLADE CAN SERIOUSLY AFFECT THE OPERATION OF THE MACHINE AND
THROW MORE OBJECTS. REPLACE BENT BLADES AT ONCE! ALWAYS REPLACE
BLADES AND HARDWARE IN PAIRS TO MAINTAIN BALANCE.
How to Check the Mower Devices
1. The knives should be replaced when:
•
The width of the knife at point B=1 cm (0.4
inches) from the edge of the disk is 3/4 of the
original width A.
•
The oval shape of the hole is more than a
distance of C=2 mm (0.08 inches) of the size of
the original hole.
Summary of Contents for DHM Series
Page 2: ......
Page 9: ...Safety Section 1 1 SAFETY SECTION...
Page 26: ...SAFETY DHM 8 9 10 05 19 Safety Section 1 18 2019 Alamo Group Inc SAFETY...
Page 27: ...SAFETY DHM 8 9 10 05 19 Safety Section 1 19 2019 Alamo Group Inc SAFETY...
Page 28: ...SAFETY DHM 8 9 10 05 19 Safety Section 1 20 2019 Alamo Group Inc SAFETY...
Page 30: ......
Page 31: ......
Page 57: ......
Page 83: ...Introduction Section 2 1 2019 Alamo Group Inc INTRODUCTION SECTION...
Page 88: ......
Page 89: ...Assembly Section 3 1 ASSEMBLY SECTION...
Page 101: ...Operation Section 4 1 OPERATION SECTION...
Page 141: ...Maintenance Section 5 1 2019 Alamo Group Inc MAINTENANCE SECTION...
Page 148: ...MAINTENANCE DHM 8 9 10 05 19 Maintenance Section 5 8 2019 Alamo Group Inc MAINTENANCE...
Page 150: ...DHM7 8 9 10 05 19 P N50078287 Printed U S A DISC MOWER DHM8 DHM9 DHM10...