Great Dane GDRZ52-25KAE Manual De Usuario
Service Mower - 48
SERVICE MOWER
Replacing Mower Blades
MX15357
1. Use two long-handled 15/16 in. wrenches to loosen nut
(A).
(A).
2. Remove nut (A), blade bolt (B), three 1/4 in. washers (C)
and blade (D).
and blade (D).
3. Install replacement blade:
•
Blade wing must face toward top of mower deck.
•
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
•
Sharpen blades with grinder, hand file or electric blade
sharpener.
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.
Balancing Blades
1. Clean blade.
M61524
2. Put blade on nail in a vise. Turn blade to horizontal
position.
position.
3. Check balance. If blade is not balanced, heavy end of
blade will drop.
blade will drop.
4. Grind bevel of heavy end. Do not change blade bevel.
Replacing Mower Spindle Bearings - 48-, 52-
and 61-Inch Mower Decks
and 61-Inch Mower Decks
1. Park machine safely. (See Parking Safely in the Safety
section.)
section.)
IMPORTANT: Avoid damage! When installing the
blade:
blade:
• Make sure the blade is properly seated on the
spindle.
spindle.
• Make sure the concave side of the large washer
faces toward the blade.
faces toward the blade.
c
CAUTION: Avoid injury! Mower blades are
dangerous!
•
Always wear gloves while working on
blades.
•
Always wear safety eye protection when
grinding.
C
D
B
A
c
CAUTION: Avoid injury! Mower blades are
sharp. Always wear gloves when handling
mower blades or working near blades.
mower blades or working near blades.
A
B