Toro ProLine 30152 User manual

Operator’s Manual
IMPORTANT: Read this manual carefully. It contains information about your
safety and the safety of others. Also become familiar with the controls and
their proper use before you operate the product.
FORM NO. 3321-527
ProLine
52” Mower
for Mid-Size Traction Unit
Model No. 30152 – 890001 & Up

Printed in USA
Introduction
We want you to be completely satisfied with your
new product, so feel free to contact your local
Authorized Service Dealer for help with service,
genuine replacement parts, or other information you
may require.
Whenever you contact your Authorized Service
Dealer or the factory, always know the model and
serial numbers of your product. These numbers will
help the Service Dealer or Service Representative
provide exact information about your specific
product. You will find the model and serial number
plate located in a unique place on the product as
shown below.
1
1074
1. Model and Serial Number Plate
For your convenience, write the product model and
serial numbers in the space below.
Model No:
Serial No.
The warning system in this manual identifies
potential hazards and has special safety messages that
help you and others avoid personal injury, even death.
DANGER, WARNING and CAUTION are signal
words used to identify the level of hazard. However,
regardless of the hazard, be extremely careful.
DANGER signals an extreme hazard that will cause
serious injury or death if the recommended
precautions are not followed.
WARNING signals a hazard that may cause serious
injury or death if the recommended precautions are
not followed.
CAUTION signals a hazard that may cause minor or
moderate injury if the recommended precautions are
not followed.
Two other words are also used to highlight
information. “Important” calls attention to special
mechanical information and “Note” emphasizes
general information worthy of special attention.
The left and right side of the machine is determined
by sitting on the seat in the normal operator’s
position.

1
Contents
Page
Safety and Instruction Decals 2. . . . . . . . . . . . . .
Assembly 3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Loose Parts 3. . . . . . . . . . . . . . . . . . . . . . . . .
Installing the Castor Wheels 4. . . . . . . . . . .
Installing the Carrier Frame
to the Traction Unit 4. . . . . . . . . . . . . . . . .
Installing the Cutting Deck 5. . . . . . . . . . . .
Installing the Drive Belt 5. . . . . . . . . . . . . . .
Operation 7. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Side Discharge or Mulch Grass 7. . . . . . . . .
Engaging the Mower Blades (PTO) 7. . . . . .
Adjusting the Height-of-Cut 8. . . . . . . . . . .
Adjusting Gage Wheels 8. . . . . . . . . . . . . . .
Tips for Mowing Grass 9. . . . . . . . . . . . . . .
Page
Maintenance 10. . . . . . . . . . . . . . . . . . . . . . . . . . . .
Service Interval Chart 10. . . . . . . . . . . . . . . .
Cutting Blades 10. . . . . . . . . . . . . . . . . . . . . .
Correcting Cutting Unit Mismatch 13. . . . . .
Setting the Front-to-Rear Pitch 13. . . . . . . . .
Setting the Side-to-Side Leveling 14. . . . . . .
Greasing the Bearings and Bushings 15. . . . .
Replacing the Deck Belt 15. . . . . . . . . . . . . .
Replacing the Drive Belt 16. . . . . . . . . . . . . .
Replacing the Castor Wheel Fork Bushings 17
Servicing the Castor Wheels and Bearings 18
Replacing the Grass Deflector 19. . . . . . . . . .
Storage 19. . . . . . . . . . . . . . . . . . . . . . . . . . . .

Safety
2
Safety and Instruction Decals
Safety decals and instructions are easily visible to the operator and are located near
any area of potential danger. Replace any decal that is damaged or lost.
See Traction Unit Operator’s Manual for
Glossary of Safety Symbols
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3
Assembly
Loose Parts
Note: Use the chart below to identify parts used for assembly.
DESCRIPTION QTY. USE
Castor Wheel Assembly
Thrust Washer
Spacer
Retaining Ring
2
8
2
2
Install castor wheels to carrier frame
Carrier Frame
Flange Screw 1/2–13 x 1” (25 mm)
Flange Nut 1/2–13
1
6
6Install carrier frame to traction unit
Adjusting Shaft
Jam Nut 1/2–13
Spacer 1/2” (13 mm)
Spring
Bushing
2
4
2
2
2
Install adjusting shafts
Clevis Pin
Hairpin Cotter
4
4Install cutting unit to carrier frame
Operator’s Manual
Parts Catalog
1
1
Read before operating
Ordering parts

Assembly
4
Installing the Castor Wheels
1. Place the (2) thrust washerS and spacer onto the
castor wheel fork (Fig. 1).
2. Insert the castor wheel fork into the carrier frame
mounting tube (Fig. 1).
3. Install (2) thrust washer onto the castor wheel
fork, then secure with a retaining ring (Fig. 1).

3
2
2
1
4
5
Figure 1
1. Retaining Ring
2. Thrust Washer (4)
3. Carrier Frame Mounting
Tube
4. Spacer
5. Castor Wheel Fork
4. Set the castor wheel tire pressure to 12–15 psi
(83–103 kPa).
Installing the Carrier Frame to
the Traction Unit
1. Align the carrier frame holes with the mounting
holes in the traction unit frame (Fig. 2).
2. Fasten each side of the carrier frame to the
traction unit with three (3) 1/2” x 1” (25 mm)
flange screws and locknuts. Torque the mounting
screws to 60–80 ft-lb (81–109 Nm) (Fig. 2).
2
1

Figure 2
1. Carrier Frame 2. Traction Unit Frame

Assembly
5
Installing the Cutting Deck
1. Position the cutting deck under the carrier frame.
2. Mount the cutting deck to the carrier frame with
four (4) clevis pins and hairpin cotters (Fig. 3).
Note: All four pins must be in the same hole
locations to prevent uneven cutting.
8
11
1
3
5
7
2
4
6

9
10
Figure 3
1. 2” (51 mm) Cut Height
2. 2-1/2” (64 mm) Cut Height
3. 3” (76 mm) Cut Height
4. 3-1/2” (89 mm) Cut Height
5. 4” (102 mm) Cut Height
6. 4-1/2” (114 mm) Cut
Height
7. 5” (127 mm) Cut Height
8. Clevis Pin
9. Carrier Frame
10. Cutting Deck
11. Hairpin Cotter
Installing the Drive Belt
1. Remove the hand knobs holding the deck cover
to the top of the cutting unit and remove the
deck cover.
2. Install the drive belt around the drive pulley on
the traction unit and the upper groove of the
center spindle pulley. The belt must be between
the belt guides (Fig. 4).
3. Reinstall the deck cover onto the cutting unit,
then reinstall and tighten the hand knobs.
12
3
4

Figure 4
1. Belt Guide (2)
2. Traction Unit Drive Pulley 3. Drive Belt 4. Center Spindle Pulley

Assembly
6
4. Thread two (2) 1/2” jam nuts approximately 9”
(22.8 cm) up on each adjusting shaft (Fig. 5).
5. Slide a 1/2” spacer, spring and bushing onto each
adjusting shaft. Make sure to install the bushing
with the flange end against the spring (Fig. 5).
m–2542
5
1
2
3
46
Figure 5
1. 1/2” Jam Nut (2)
2. 1/2” Spacer
3. Spring
4. Bushing
5. Adjusting Shaft
6. Locknut (already installed
on Adjusting Shaft)
6. Insert the spring end of the adjusting shaft into
the hole in the deck mounting bracket. Note that
the small end of the bushing fits into the hole in
the deck bracket. Insert the locknut end of the
adjusting shaft into the carrier frame mounting
tab (Fig. 6).
7. To tension the belt, tighten the front jam nut on
each adjusting shaft until the springs are
compressed to 5” (12.7 cm). Measure the spring
compression between the spacer and the bushing
(Fig. 6).
8. Tighten the rear jam nuts (Fig. 6).
m–2541
2
1
4
3
5
Figure 6
1. 5” between the Spacer
and Bushing
2. Deck Mounting Bracket
3. Front Jam Nut
4. Rear Jam Nut
5. Carrier Frame Mounting
Tab
9. Check the position of the belt guides. The guides
should be positioned about 1/8” (3 mm) away
from the belt (Fig. 7). Adjust the belt guides as
necessary.
1
3

Figure 7
1. Belt Guide (2) 2. Drive Belt
10. Check the front-to-rear blade pitch. Refer to
Setting the Front-to-Rear Pitch in the
Maintenance section.

7
Operation
Side Discharge
or Mulch Grass
The mower has a hinged grass deflector that disperses
clippings to the side and down toward the turf.
POTENTIAL HAZARD
•Without the grass deflector or complete
grass catcher assembly mounted in place,
you and others are exposed to blade contact
and thrown debris.
WHAT CAN HAPPEN
•Contact with rotating mower blade(s) and
thrown debris will cause injury or death.
HOW TO AVOID THE HAZARD
•NEVER remove the grass deflector from
the mower because the grass deflector
routes material down toward the turf. If the
grass deflector is ever damaged, replace it
immediately.
•Never put your hands or feet under the
mower.
•Never try to clear discharge area or mower
blades unless you move the power take-off
(PTO) to “OFF” and rotate the ignition key
to “OFF.” Also remove the key and pull the
wire(s) off the spark plug(s).
Engaging the Mower Blades
(PTO)
The blade control switch (PTO) in conjunction with
the blade control bail engages and disengages power
to the electric clutch and mower blades.
1. Pull on the upper control bar to stop the machine
(Fig. 8).
2. To engage the blades, squeeze the blade control
bail against the upper control bar.
3. Press the blade control rocker switch forward to
“ON”. Hold the blade control bail against the
control bar while operating.
Note: Repeat the procedure to engage the
mower blades if the blade control bail
is released.
4. To disengage the blades, release the blade
control bail, or push the blade control switch to
the “OFF” position.
13
2
m–2130
Figure 8
1. Upper Control Bar
2. Blade Control Bail 3. Blade Control Switch
(PTO)

Operation
8
Adjusting the Height-of-Cut
The height-of-cut is adjustable from 2” to 5” (51 to
127 mm) in 1/2-inch (13 mm) increments by
relocating the clevis pins in different hole locations in
brackets at each corner of the cutting unit (Fig. 9).
Stop the engine before adjusting the height-of-cut.
Note: All four pins must be in the same hole
location for even cutting.
8
9
1
3
5
7
2
4
6

Figure 9
1. 2” (51 mm) Cut Height
2. 2-1/2” (64 mm) Cut Height
3. 3” (76 mm) Cut Height
4. 3-1/2” (89 mm) Cut Height
5. 4” (102 mm) Cut Height
6. 4-1/2” (114 mm) Cut
Height
7. 5” (127 mm) Cut Height
8. Clevis Pin
9. Hairpin Cotter
Adjusting Gage Wheels
The gage wheels must be adjusted in the proper hole
location for each height-of-cut position.
1. After adjusting height-of-cut. raise the
attachment lift lever: Refer to Raising
Attachments.
2. Remove hairpin cotter and pin to change hole
location (Fig. 10).
3. Select a hole position so the gage wheel is 3/8”
(9.5 mm) off the ground for the height-of-cut to
be used (Fig. 10).
4. Insert pin and secure with hairpin cotter.
5. Repeat adjustment on other gage wheels.
m–3197
1
2
3
Figure 10
1. Wheel
2. Pin 3. Hair pin Cotter