John Deere z425 - Manual (Page 37)

Service Electrical - 36
SERVICE ELECTRICAL
Servicing Mower Blades
Removing Mower Blades
1. Park machine safely. (See Parking Safely in the SAFETY section.)
2. Raise mower deck to gain access to mower blades. If necessary,
remove mower deck.
3. Block mower blade with a piece of wood to prevent it from spinning.
4. Remove mower blade(s):
MX37886
Picture Note: 42 inch deck shown.
• 42 inch mower deck: Loosen and remove nut (A), washer (B), and
blade (C).
MX36300
Picture Note: 48 inch deck shown.
• 48 and 54 inch decks: Loosen and remove bolt (D), washer (E), and
blade (F).
5. Inspect blades; sharpen, balance or replace blades as necessary.
Installing Mower Blades
42 Inch Mower deck:
1. Align the splined center hole in the blade with the splined spindle shaft
(G) and put the blade onto the mower spindle shaft with cutting edge
toward ground.
2. Install washer (B), with cupped side towards blade, and install nut (A) to
secure blade onto splined spindle shaft.
3. Block mower blade with a piece of wood to prevent spinning and tighten
nut to 68 N•m (50 lb-ft).
48 Inch Mower deck:
1. Make sure deflector cup (H) is seated properly between mower spindle
and blade.
2. Position mower blade (F) with cutting edge toward ground onto mower
spindle.
3. Install washer (E), with cupped side towards blade, and install bolt (D) to
secure blade onto spindle shaft.
4. Block mower blade with a piece of wood to prevent spinning and tighten
bolt to 68 N•m (50 lb-ft).
Service Electrical
WARNING: Battery posts, terminals and related accessories contain lead
and lead components, chemicals known to the State of California to cause
cancer and reproductive harm. Wash hands after handling.
Service the Battery Safely
Removing and Installing the Battery
Removing
1. Park machine safely. (See Parking Safely in the SAFETY section.)
c
CAUTION: Avoid injury! Rotating blades are dangerous.
Before adjusting or servicing mower:
• Disconnect spark plug wire(s) or battery negative (-) cable to
prevent engine from starting accidently.
• Always wear gloves when handling mower blades or working
near blades.
A
B
C
G
D
E
F
H
c
CAUTION: Avoid injury! The battery produces a flammable
and explosive gas. The battery may explode:
• Do not smoke near battery.
• Wear eye protection and gloves.
• Do not allow direct metal contact across battery posts.
• Remove negative cable first when disconnecting.
• Install negative cable last when connecting.