John Deere z425 - Manual (Page 30)

Service Transmission - 29
SERVICE TRANSMISSION
MX37947
Picture Note: View from rear of machine.
2. Clean transaxle fan fins (A) and around exterior of each fan with a rag,
brush, or compressed air.
Checking and Replacing Transaxle Drive Belt (Z225)
NOTE: The transmission drive belt is self-adjusted using a spring
tensioner and does not require a tension adjustment.
Checking Belt:
1. Park machine safely. (See Parking Safely in the SAFETY section.)
MX37947
Picture Note: View from rear of machine.
MX38116
2. Inspect drive belt (A) for excessive wear, damage or stretching while in
position on the engine sheave, transmission sheaves, and drive belt
tensioner sheave.
Replacing Belt:
1. Disconnect electric clutch wiring connector (B) from main wiring
harness connector (C).
2. Remove clutch wiring harness from retaining clip (D), and lower
harness and connector (C) through hole (E).
3. Remove mower deck drive belt (F). (See Replacing Mower Deck Drive
Belt in the SERVICE MOWER section.)
4. Remove drive belt (A) from engine sheave (G), transmission sheaves
and idler sheave (H).
• To make removal and installation of the belt easier, carefully rotate the
spring loaded idler (I) counterclockwise (J), and remove belt.
5. Install belt onto engine sheave, transmission sheaves and idler sheave
as shown by arrows.
6. Install mower deck drive belt.
c
CAUTION: Avoid injury! Entanglement in a belt or sheave
can cause serious injury. Stop engine and wait for all moving parts
to stop.
A
A
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.
I
A
F
G
J
H
C B D
E