Assembly 39
20944 (Rev. 2/3/2006)
Rear Caster Wheel Installation for RM990-3
Remove the rear caster wheel and arm assemblies
from shipping location along the inner deck rails. Dis-
card the shipping bolts.
Attach adjustment lugs to frame with bolts (36), lock
washers (37) and nuts (38). Attach caster wheel arm to
frame with bolt (36), lock washer (37) and nuts (38).
The wheel comes assembled with bearings and cups
installed.
Adjust mower cutting height by using chart (page 11)
and secure with bolts (32) and nuts. Tighten all hard-
ware (see page 43).
Repeat for opposite rear caster wheel.
Figure 35. RM990-3 Rear Caster Wheel Installation
Initial Filling of Gearbox
NOTICE
■
Gearbox was not filled with oil at the factory. It
must be serviced before operating. Failure to ser-
vice will result in damage to gearbox.
The gearbox was not filled at the factory. Remove the
fill plug and pour in one quart of SAE 90W gear lube,
wait five minutes and add an additional pint and one
half. Allow an additional five minutes for the lube to flow
through the bearings, then check to make sure half of
the horizontal gear shaft is covered. Replace the fill
plug.
1.
Support plate
2.
Caster wheel arm
12. Tire
13. Caster yoke
32. 1/2" x 3-3/4 Cap screw
34. 1/2" Flange lock nut
36. 5/8" x 4 Cap screw
38. 5/8" Hex nut
(Rev. 3/14/2008)
