Every 300 Hours; Adjusting The Engine Valve Clearance; Cleaning The Combustion Chamber, Lapping The Valve Seating Surface; Every 400 Hours - Kubota Z411-AU Operator's Manual

EVERY 300 HOURS

• Be sure to stop the engine and remove the key
before changing the oil and the oil filter
cartridge.
• Allow the engine to cool down sufficiently. Oil
can be hot and may cause burns.
The oil filter cartridge must be changed every 200
service hours.
Always use a genuine oil filter.
1. Drain the engine oil.
Drain the engine oil by following steps 1 and 2 from
changing engine oil section.
(See 1. Changing the engine oil on page
2. Remove the old filter and wipe off the filter adapter
with a clean cloth.
3. Place a new replacement filter in a shallow pan with
the open end up. Pour new oil, of the proper type, in
the threaded center hole. Stop pouring when the oil
reaches the bottom of the threads. Allow a few
minutes for the oil to be absorbed by the filter
material.
4. Apply a thin film of clean oil to the rubber gasket on
the new oil filter.
5. Install the new oil filter to the filter adapter. Hand
tighten the filter clockwise until the rubber gasket
contacts the adapter, then tighten the filter an
additional 3/4 turn.
6. Fill the engine with the proper oil up to the [FULL]
or [F] mark on the dipstick. Always check the oil
level with the dipstick before adding more oil.
7. Reinstall the oil fill cap and dipstick, and then
tighten securely.
8. Start the engine and check for oil leakage. Recheck
the oil level before placing the engine into service.
Stop the engine, correct any leakage, and allow 1
minute for the oil to drain down, then recheck the
level on the dipstick.
NOTE :
• To prevent extensive
damage, always maintain the proper oil level
in the crankcase. Never operate the engine
with the oil level below the [ADD] or [L] mark
or above the [FULL] or [F] mark on the
dipstick.
Z411-AU, Z421-AU
58.)
engine wear or
(1) Engine oil filter cartridge
EVERY 300 HOURS
1. Adjusting the engine valve
clearance
Consult your local KUBOTA Dealer for this service.
2. Cleaning the combustion
chamber, lapping the valve seating
surface
Consult your local KUBOTA Dealer for this service.

EVERY 400 HOURS

1. Replacing the transaxle oil filter
cartridge
WARNING
To avoid serious injury or death:
• Park the machine on a firm and level surface.
• Apply the parking brake.
• Be sure to stop the engine and remove the key
before changing or checking the oil.
• Allow the transmission case to cool down
sufficiently, as oil can be hot and may cause
burns.
1. Apply the bypass valve.
(See 1. Hydrostatic transaxle bypass rods on page
39.)
2. Remove the hex head bolts (4), and filter guard (3).
Clean any loose debris from around the perimeter
of the oil filter (2).
3. Place an oil drain pan (12 in. diameter or larger and
8 qt. capacity is optimal) beneath the oil filter.
Remove the oil filter (2) and discard it.
PERIODIC SERVICE
(A) "MOUNTING SURFACE"
63