Kubota M5660SUH Operator's Manual page 77

A Always attach wheels as shown in the drawing.
A If not attached as illustrated, transmission parts may
be damaged.
A When re-fitting or adjusting a wheel, tighten the bolts
to the following torques then recheck after driving the
tractor 200m (200 yards) and 10 times of shuttle
movement by 5 m (5 yards), and thereafter according
to service interval. (See "MAINTENANCE" section.)
(1) 260 to 304 N-m (26.5 to 31 kgf-m) (192 to 224 ft-lbs)
(2) [8.3-24] 244 N-m (24.9 kgf-m) (180 ft-lbs)
[9.5-22] 260 to 304 N-m (26.5 to 31 kgf-m) (192 to 224 ft-lbs)
A Wheels without beveled or tapered holes:
Use the Spring plate and flat side of lug nut.
(1) Spring plate
TIRES, WHEELS AND BALLAST
A Wheels with beveled or tapered holes: Use the
tapered side of lug nut.
To avoid personal injury or death:
A Before jacking up the tractor, park it on a firm
and level ground and chock the rear wheels.
A Fix the front axle to keep it from pivoting.
A Select jacks that withstand the machine weight
and set them up as shown below.
(1) Jack points
55