John Deere z425 - Manual (Page 19)

Service Intervals - 18
SERVICE INTERVALS
Removing Debris From Inspection Points:
1. Park machine safely. Wait for all moving parts to stop before getting off
to inspect machine.
2. Open hopper cover. Check chute outlet.
3. Remove chute from mower deck or blower assembly. Check chute inlet.
4. Check under mower deck for debris.
Transporting Machine on Trailer
NOTE: Trailer capacity must exceed combined machine weight and
attachment weight. (See Specifications section in operator’s
manual).
Be sure trailer has all the necessary lights and signs required by law.
1. Park trailer on level surface.
2. Raise mower deck before driving machine onto trailer.
MX22500
3. Back machine onto heavy-duty trailer with full-width ramp.
4. Lower mower deck completely.
5. Lock park brake.
6. Turn off machine and remove key.
7. Fasten machine at the axle or frame to trailer with heavy-duty straps,
chains, or cables. Both front and rear straps must be directed down and
outward from machine.
Mowing Tips
• Mow grass with throttle lever in the full fast / mow position.
• Mow grass when it is dry.
• Keep mower deck and discharge chute clean.
• Mow with sharp blades.
• Properly level mower deck for a smooth cut.
• Mow grass frequently.
• Use a travel speed that fits the conditions:
• Mow tall or wet grass twice. Cut grass at half desired height – then cut
at desired height.
• Travel slow when mowing tall, thick or wet grass.
• Avoid damaging grass by slipping or skidding machine drive wheels.
Practice smooth control lever movements.
• When performing sharp turns, do not allow inside machine drive wheel
to stop and twist on grass.
Service Intervals
Servicing Your Machine
Please use the following timetables to perform routine maintenance on
your machine.
Service Intervals
Break-In after 8 Hours
• Change engine oil.
• Change engine filter (Z425 and Z445).
Every 50 Hours or Annually
• Lubricate mower deck spindles (Z425 and Z445).
Every 100 Hours or Annually
• Change engine oil.
• Change engine filter (Z425 and Z445).
• Replace spark plugs.
• Replace air filter elements, both foam and paper.
• Replace fuel filter.
• Check mower belt.
• Sharpen / Replace blades.
• Clean underside of deck.
• Check tire pressure.
• Clean engine cooling fins.
Every 200 Hours
• Check / adjust engine valve clearance. See your John Deere dealer for
this service.
c
CAUTION: Avoid injury! Do not use hands or feet to clear
plugged mower deck or blower assembly. Stored energy can cause
blades to rotate.
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CAUTION: Avoid injury! Use extra care when loading or
unloading the machine onto a trailer or truck. Machine wheels can
go off the ramp or trailer, causing the machine to tip over.
• To load, back slowly and in a straight line. Keep wheels away
from drop-offs and edges.
• Do not use two separate loading ramps. Use a full width
loading ramp at least 30 cm (12 in.) wider than machine to keep
castor wheels from going off the ramp edge.
• Use a trailer with sides.
IMPORTANT: Avoid damage! Operating in extreme conditions
may require more frequent service intervals:
• Engine components may become dirty or plugged when
operating in extreme heat, dust or other severe conditions.
• Engine oil can degrade if machine is operated constantly at slow
or low engine speeds or for frequent short periods of time.