Lubricating Crank Shaft; Cleaning Combustion Chamber; Replacing Air Cleaner Inner Element; Replacing Spark Plugs - Kubota Z723 Operator's Manual

60 PERIODIC SERVICE
10. With the engine running, verify clutch function by
engaging and disengaging the clutch 10 consecutive
times. If clutch does not engage, see your Kubota
Dealer.
This adjustment should be done every 500 hours of
operation or annually, whichever comes first. In cases
where the machine is heavily used, air gap should be
checked more often.
If the air gap is too narrow, the clutch armature may drag
when disengaged, resulting in premature failure.
BLubricating Crank shaft
The engine crank shaft should be lubricated every 500
hours to ensure that critical components such as the
electric clutch, transaxle drive pulley, and engine can be
removed if needed.
1. Remove the mower belt.
2. Remove the transaxle belt.
3. Remove the electric clutch and transaxle drive pulley.
(1) Transaxle Belt
(2) Transaxle Drive Pulley
(3) Mower Belt
(4) Electric Clutch
(5) Clutch Mounting Bolt
4. Apply a light coating of copper-based Anti-Seize
lubricant to engine crank shaft.
(1) Engine Crank shaft
5. Reinstall transaxle drive pulley, electric clutch, and
clutch mounting bolt.
6. Torque clutch mounting bolt to 67-75 N-m (50-55 lbf-
ft).
7. Reinstall transaxle belt.
8. Reinstall mower belt.
BCleaning Combustion Chamber
If you do not have the proper tools and/or are not
mechanically proficient, consult your local KUBOTA
Dealer for this service.
BReplacing Air Cleaner Inner Element
(See "Checking Air Cleaner Outer Element" in "EVERY
100 HOURS" in "PERIODIC SERVICE" section.)
BReplacing Spark Plugs
(See "Checking Sparking Plug Condition and Gap" in
"EVERY 200 HOURS" in "PERIODIC SERVICE" section.)