Toro 105-6172, 105-6178 Installation Instructions
Gearbox Service Kit
Z Master 320/350 Series 48 Mower
Part No. 105–6172
Part No. 105–6178
Installation Instructions
Loose Parts
Note: Use the chart below to identify parts for assembly.
DESCRIPTION QTY. USE
Form No. 3327–295
Gearbox
Screw
Washer
Spring Pin
Decal 1 Installing the Decal
Blade Bolt, Lefthand thread 1 Installing the Blade Bolt
Identifying the Mowers
There are two types of mowers that this gearbox can be
installed on. There is the Z320 Series and the Z350 Series.
Identify the mower type you have in figures 1 and 2.
1
8
8
1
Installing the Gearbox
Z350 Series Mower
If you have a mower, with height–of–cut posts, as shown
in figure 2 then proceed to page 2 for installation
instructions.
2
Z320 Series Mower
If you have a mower, with height–of–cut brackets, as
shown in figure 1 then proceed to page 2 for installation
instructions.
2
1
1
2
m-4978
Figure 1
1. Z320 Series mower 2. Height–of–Cut Brackets
2001 by The Toro Company
8111 Lyndale Avenue South
Bloomington, MN 55420-1196
Figure 2
1. Z350 Series mower 2. Height–of–Cut Posts
1
m–4857
All Rights Reserved
Printed in the USA
Installing the Z320 Series
Installing the Z350 Series
Gearbox
Note: Each gearbox assembly has three individual fluid
boxes.
Removing the Gearbox
1. Remove blades and blade retainers from beneath
mower. Save the square key from each gearbox output
shaft for use with the new gearbox.
2. Remove any guards connected to the existing gearbox,
and disconnect drive shaft.
3. Remove and discard the existing gearbox mounting
bolts (8).
4. Remove existing gearbox from top of mower.
Installing the Gearbox
1. Place new gearbox on mower. The vertical output
shafts should be centered in the two cone–shaped
recesses in the top of the mower (Fig. 3).
2. Insert bolts, with washers, through mounting brackets
and into gearbox mounting holes (Fig. 3). Torque
mounting bolts to 260 ± 25 in.–lbs.
Gearbox
Note: Each gearbox assembly has three individual fluid
boxes.
Removing the Gearbox
1. Remove blades and blade retainers from beneath
mower. Save the square key from each gearbox output
shaft for use with the new gearbox.
2. Remove any guards connected to the existing gearbox,
and disconnect drive shaft.
3. Remove and discard the existing gearbox mounting
bolts (8).
4. Remove existing gearbox from top of mower.
Installing the Gearbox
1. Place new gearbox on mower. The vertical output
shafts should be centered in the two cone–shaped
recesses in the top of the mower (Fig. 4).
2. Insert bolts, with washers, through mounting brackets
and into gearbox mounting holes (Fig. 4). Torque
mounting bolts to 260 ± 25 in.–lbs.
Important Torque mounting bolts to 260± 25 in.–lbs.
Bolts have pre–applied thread locker.
3. Connect driveshaft to gearbox (use new spring pin
included in kit). Attach any guards that were removed
for assembly, and connect blade assemblies to new
gearbox.
4
1
5
2
3
m–4629
Figure 3
1. Gearbox
2. Bolt
3. Washer
4. Pin
5. Decal
Important Torque mounting bolts to 260 ± 25 in.–lbs.
Bolts have pre–applied thread locker.
3. Connect driveshaft to gearbox (use new spring pin
included in kit). Reattach any guards that were
removed for assembly, and connect blade assemblies
to new gearbox.
4
1
5
2
m–4957
1. Gearbox
2. Bolt
3. Washer
3
Figure 4
4. Spring P i n
5. Decal
2
Loading...