Toro Greensmaster Flex 21 Service Manual page 53

7. Unlock self aligning bearing collars on differential
axle shafts (Fig. 33):
A. Loosen setscrew on locking collar.
B. Using setscrew hole as an impact point, unlock
collar by striking it with a punch in the opposite direc-
tion of shaft rotation (Fig. 34).
C. Slide locking collar toward gearbox.
D. Remove carriage bolts and flange nuts that retain
bearing flangettes to frame. Slide flangettes and self
aligning bearings from gearbox axles.
8. Loosen and remove four flange nuts that secure
gearbox to engine (Fig. 35).
9. Move gearbox away from the engine to allow remov-
al of parking brake lever (with cable attached) from
brake shaft of gearbox. Loosen locknut that is used to
secure brake lever to the brake shaft. Remove lever with
cable attached. Note that lever and shaft splines identify
correct lever location on shaft.
10.Slide gearbox assembly to the right side of mower,
away from the engine. This should allow the left gearbox
axle to clear the frame and the gearbox to separate from
the engine gear. Rotate and angle gearbox assembly
and slide right side axle from frame to complete gearbox
removal.
11. Slide locking collars from axle shafts.
12.Remove and discard flange gasket from between
engine and gearbox.
Gearbox Installation
1. Park traction unit on a level surface. Make sure en-
gine is OFF. Remove high tension lead from the spark
plug.
2. Place new flange gasket on four setscrews installed
in engine mounting flange.
3. Position locking collars on gearbox axles.
4. Insert gearbox short axle through frame on right side
of mower. By rotating the gearbox, position left axle into
frame and input flange of gearbox onto engine.
5. Install parking brake lever (with cable attached) to
brake shaft of gearbox noting location of alignment
splines on shaft and lever.
6. Rotate engine crankshaft slowly with recoil starter to
align crankshaft gear with gearbox input gear. Align
gearbox flange onto setscrews. Install and tighten four
flange nuts that secure gearbox to engine (Fig 35).
Greensmaster Flex 21
1. Gearbox axle
2. Pulley washer
9
8
7
Anti–seize lubricant
40 to 50 ft–lb
(54 to 68 N–m)
1. Gearbox axle
2. Carriage bolt
3. Bearing flangette
4. Self aligning bearing
5. Locking collar/setscrew
1. Gearbox axle (LH)
Page 4 – 25 Traction and Reel Drive System (Rev. C)
2
1
3
Figure 32
3. Flange nut
6
3
4
5
3
Figure 33
6. Flange nut
7. Pulley
8. Pulley washer
9. Flange nut
10. Woodruff key
2
1
Figure 34
2. Locking collar (loosen)
2
10
1