John Deere z425 - Manual (Page 35)

Service Mower - 34
SERVICE MOWER
MX37889
Picture Note: 48 inch mower deck shown.
7. Connect mower drive belt:
• Install belt onto engine sheave.
• Install 3/8-inch ratchet onto square hole (G) in tension arm and rotate
clockwise to release tension on belt, while installing mower belt onto
center spindle sheave (H). Make sure belt is properly seated on all
sheaves.
8. Install foot plate.
Replacing Mower Drive Belt (42 Inch Mower)
1. Park machine safely. (See Parking Safely in SAFETY section.)
2. Allow engine and muffler to cool completely.
3. Remove mower deck.
4. Remove drive belt:
MX37892
• Remove two bolts (A) and left belt cover (B).
MX37893
• Loosen bolt (C) on belt guide.
• Loosen hardware on two sheaves (D), 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.
MX38099
Picture Note: Shown without sheave for clarity only.
9. Make sure belt guide (E) is indexed properly into hole (F) on tension
arm (G).
10. Tighten sheave hardware to 47 N•m (35 lb-ft).
11. Make sure belt is properly seated on all sheaves, and install belt
shield.
12. Install mower deck.
Replacing Mower Drive Belt (48 and 54 Inch Mowers)
1. Park machine safely. (See Parking Safely in SAFETY section.)
2. Allow engine and muffler to cool completely.
3. Remove mower deck.
4. Remove drive belt:
c
CAUTION: Avoid injury! Component is spring-assisted and
under tension. Injury can occur if spring-assisted component is
released suddenly.
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.
G
H
A
A
B
C
D
D
E
E
G
F