Great Dane GDB10030 Checking for Bent Mower Blades, Replacing Mower Blades, Sharpening Blades

SERVICE MOWER

Checking for Bent Mower Blades

cCAUTION: Avoid injury! Mower blades are sharp. Always wear gloves when handling mower blades or working near blades.

1.Park machine safely. (See Parking Safely in the Safety section.)

A

MIF

2.Measure distance (A) between blade tip and flat ground surface.

3.Turn blade 180°. Measure distance between other blade tip and flat ground surface.

4.Install new blade, if the difference between the two measurements is more than 3mm (0.13 in.).

Replacing Mower Blades

cCAUTION: Avoid injury! Mower blades are sharp. Always wear gloves when handling mower blades or working near blades.

A

C

D

B

MX15357

1.Use two long-handled 15/16 in. wrenches to loosen nut

(A).

2.Remove nut (A), blade bolt (B), three 1/4 in. washers (C) and blade (D).

3.Install replacement blade:

• Blade wing must face toward top of mower deck.

IMPORTANT: Avoid damage! When installing the blade:

•Make sure the blade is properly seated on the spindle.

•Make sure the concave side of the large washer faces toward the blade.

•Install blade bolt (B), blade (D), three 1/4 in. washers

(C) and nut (A).

•Tighten blade nut to 81 N•m (60 lb-ft).

4.Lower machine.

5.Adjust mower deck to a desirable cutting height.

Sharpening Blades

cCAUTION: Avoid injury! Mower blades are dangerous!

•Always wear gloves while working on blades.

•Always wear safety eye protection when grinding.

•Sharpen blades with grinder, hand file or electric blade sharpener.

A

B

MX8333

•Keep original bevel (A) when grinding.

•Blade should have 0.40 mm (1/64 in.) cutting edge (B) or less.

•Balance blades before installing.

Service Mower - 19