John Deere z425 - Manual (Page 36)

Service Mower - 35
SERVICE MOWER
MX37894
Picture Note: 48 inch mower deck shown.
• Remove six bolts (A) and left and right belt covers (B).
MX37895
• Loosen bolt (C) on belt guide.
• Loosen nut (D) and bolt (E) on sheaves, and remove belt from all
sheaves.
5. Inspect belt for wear or damage; replace as necessary.
6. Clean top surface of mower deck and sheaves.
7. Install belt on mower deck as shown.
8. Install and tighten bolt (C) on belt guide.
MX38100
Picture Note: Shown without sheave for clarity only.
9. Make sure belt guide (F) is indexed properly into hole (G) on tension
arm (H).
10. Tighten sheave nut (D) and bolt (E) to 47 N•m (35 lb-ft).
11. Make sure belt is properly seated on all sheaves, and install belt
shields.
12. Install mower deck.
Checking for Bent Mower Blades
1. Park machine safely. (See Parking Safely in the SAFETY section.)
2. Raise mower deck to highest position to access blades.
MX4897
Picture Note: Mower deck with side discharge used for illustration
3. Measure distance (A) between blade tip and flat ground surface.
4. Rotate blade 180° and measure distance between other blade tip and
flat ground surface.
5. Install new blade if the difference between the two measurements is
more than 3 mm (1/8 in.).
6. Repeat for all blades.
c
CAUTION: Avoid injury! Components are installed under
spring tension. Wear eye protection and use proper tools when
installing and removing components with spring tension.
A
A
B
C
D
E
c
CAUTION: Avoid injury! Blades are sharp. Always wear
gloves when handling blades or working near blades.
Replace blades if defective. Never straighten or weld them.
G
F
H
A