Toro 78252 Operator's Manual
FORM NO. 3319-720GB
Wheel
Horse
52” Side Discharge
Mower
for
Lawn
Model No. 78252– 8900001 & Up
& Garden T
ractors
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.
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
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.
m–2371
1. Model
For your convenience, write the product model and
serial numbers in the space below.
Model No:
Serial No.
and Serial Number Plate
The left and right side of the machine is determined
by sitting on the seat in the normal operator’s
position.
Printed in USA
Contents
Page
Safety and Instruction Decals 2.
Installation 3
Loose Parts 3
Mower Preparation 4
Tractor Preparation 6
Installing the Mower 8
Transport Height Adjustment 9
Side-to-Side Mower Leveling 10
Front-to-Rear Blade Slope 11
Removing the Mower 12
Operation 13
Side Discharge 13
Operating the Power Take Off (PTO) 13
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Page
Attachment Lift Lever 14
Attachment Power Lift 14
Adjusting Dial-A-Height 15
Adjusting Gage Wheels15. . . . . . . . . . . . . . .
Tips for Mowing Grass 16
Maintenance 17
Service Interval Chart 17
Cutting Blade18. . . . . . . . . . . . . . . . . . . . . . .
Greasing and Lubrication 20
Blade Drive Belt 20
Power Take Off (PTO) Belt 21
Washing Underside of Mower 22
Storage 23
Troubleshooting 24
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1
Safety
Safety
ON GRASS DEFLECT
NEXT T
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.
OR
(Part No. 93–7317)
O GAGE WHEELS
(Part No. 93–7282)
ON MOWER LEFT AND
DISCHARGE CHUTE
(Part No. 93–7316)
UNDER GRASS DEFLECT
(Part No. 93–7009)
OR
ON MOWER LEFT SIDE
(Part No. 94–2543)
2
ON MOWER REAR CENTER
(Part No. 94–4937)
Installation
Loose
Parts
Note: Use the chart below to identify parts used for assembly.
DESCRIPTION QTY. USE
Gage wheel
Shoulder bolt
Lock nut 3/8” (with patch on threads)
Rear link
Washer
Cotter pin
Adjustable links
Washer 3/8” (10 mm)
Cotter pin 1” (26 mm)
Grass deflector
Spring
Bolt 3/8– 24 x 3-1/2” (89 mm)
Lock nut 3/8”
2
2
2
1
2
2
2
2
2
1
2
2
2
Install gage wheels
Install rear link
Install front mount to mower
Install grass deflector
Up stop
Electric clutch
Hairpin cotter–large
Washer 3/4” (19 mm)
Link pin
Hairpin cotter–small
Washer 1/2” (13 mm)
Operator’
s Manual
1
1
2
2
1
3
3
1
Install on tractor
Install mower to tractor
Read before operating
3
Installation
Mower
Preparation
1. Attach gage wheels to the outside of arms on
rear carrier assembly. Grease fitting on wheel
must face out (Fig. 1).
2. Secure with shoulder bolt and 3/8” lock nut,
with internal locking patch on threads (Fig. 1).
Note:
3
1. Carrier
2. Wheel
3.
Grease fitting out
Grease wheels.
5
arm
4
Figure 1
1
2
4.
Shoulder bolt
5.
Lock nut 3/8” (with patch)
m–2389
5. Rotate adjustable links so bolt heads are up and
place between brackets, as shown, on front of the
mower (Fig. 3).
6. Secure to brackets with 1/2” washers and 1”
(26 mm) cotter pins (Fig. 3).
1
4
m–3285
3
1. Adjustable
2. Bracket
3
link
2
Figure 3
asher 1/2”
3. W
4.
Cotter pin 1” (26 mm)
4
3. Install rear link between mower bracket and
carrier lift arm (Fig. 2).
4. Secure with 1/2” washers and 1” (26 mm) cotter
pins (Fig. 2).
4
3
4
1. Rear
2.
Carrier lift arm
2
link
1
Figure 2
3. W
asher 1/2”
4.
Cotter pin 1” (26 mm)
3
m–3388
4
7. Place springs into brackets on mower with
hooked ends over raised back (Fig. 4).
Installation
8. Align grass deflector with holes in brackets and
spring straight ends in space under hinge and
above deflector (Fig. 4).
9. Secure deflector to bracket with 3/8–3-1/2”
(89 mm) bolts through grass deflector, springs
and brackets. Secure with 3/8” lock nuts (Fig. 4).
10. Lift grass deflector and check that it is spring
loaded and pivots freely to the full down
position.
IMPORTANT: Grass deflector must be
spring loaded in the down position. Lift
deflector up to test that it snaps to the full
down position.
6
3
POTENTIAL
HAZARD
• Without the grass deflector, discharge
cover, 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 AV
•
NEVER r
OID THE HAZARD
emove 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 off the spark plug(s).
5
1. Bracket
2. Spring
3.
space for spring
hook end
2
4
Figure 4
4.
Grass deflector
5.
Bolt 3/8–3-1/2” (89 mm)
6.
Lock nut 3/8”
1
m–1783
5
Installation
Tractor
Preparation
1. Park the machine on a level surface and lower
attachment lift to the full “DOWN” position.
Refer to Operation: Attachment Lift page 14.
Note: Turn Dial-A-Height control to allow
lift to go to full “MOUNTING”
position.
2. Adjust air pressure in tires to recommended
pressure.
3. Adjust transport height nut until bottom of rear
lift arms are approximately 7-1/4” (188 mm)
from the level surface (Fig. 5).
1
4. Raise attachment lift to the full “UP” position.
Refer to Operation: Attachment Lift page 14.
5. Remove E-ring, washer and lift link from front
lift arm (Fig. 6).
6. Hold front lift arm up until stop contacts frame
(Fig. 6).
7. Push back hard on lift rod, to raise linkage, and
check location of lift rod compared to mounting
hole location.
8. Adjust length of lift rod, by turning in\out of
trunnion, so end just slides into mounting hole in
front lift arm (Fig. 6).
9. Slide lift rod into hole and secure with
previously removed washer and E-ring (Fig. 6).
10. Check that stop is 0”–1/8” (0–3 mm) away frame
when fully assembled and lift in the full “UP”
2
position.
1. Transport
2.
Rear lift arms
height nut
3
Figure 5
3.
7-1/4” (188 mm)
1. E-ring
2. Washer
3. Stop
on lift arm
5
4
2
1
Figure 6
4.
Lift link
5. Trunnion
m–3398
3
6
Installation
11. Unplug clutch wire terminal from tractor wire
harness. Remove center retaining bolt and
washer then slide double pulley clutch off shaft
(Fig. 7).
Note: Center bolt is installed with thread
locking compound, impact wrench
may be required to remove.
Note: Save hardware for use when installing
single pulley clutch.
12. Position clutch so wire points toward right front
of tractor and point of triangle is in captured
up-stop. Align key in clutch with keyway and
slide single pulley clutch onto shaft (Fig. 7).
Secure with thread locking compound on threads
of previously removed hardware.
13. Torque bolt to 55 ft-lbs. (75 N
.
m)
14. Route clutch wire around engine mounting plate
and plug into terminal of tractor wire harness
(Fig. 7).
15. Remove bolts securing existing up-stop to
tractor frame (Fig. 8).
16. Place J-clip, holding drain hose, against frame
and mount new, long, up-stop to frame with
previously removed hardware (Fig. 8).
2
3
1. Up-stop
2. J-clip
(long)
1
Figure 8
Existing bolts
3.
m–3390
1. Clutch
2. Terminal
3. Bolt
2
6
5
4
1
3
m-2416
Figure 7
4. Washer
5. Key
6. Up-stop
7
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