Toro 78268 Manual de usuario

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. 3319–721GB

Wheel

Horse



48” Side Discharge

Mower

for

Lawn

& Garden T

ractors

Model No. 78268 – 7900001 & 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

m–1275

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.

Contents

Page

Safety and Instruction Decals 2.

. . . . . . . . . . . . .

Installation 3

. . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Loose Parts 3

. . . . . . . . . . . . . . . . . . . . . . . . .

Mower Preparation 4

. . . . . . . . . . . . . . . . . . .

Installing the Mower 6

. . . . . . . . . . . . . . . . .

Transport Height Adjustment 7

. . . . . . . . . . .

Side-to-Side Mower Leveling 8

. . . . . . . . . .

Front-to-Rear Blade Slope 9

. . . . . . . . . . . . .

Removing the Mower 10

. . . . . . . . . . . . . . . . .

Operation 11

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Side Discharge 11

. . . . . . . . . . . . . . . . . . . . . .

Operating the Power Take Off (PTO) 11

. . . .

Attachment Lift Lever 12

. . . . . . . . . . . . . . . .

Page

Attachment Power Lift 12

. . . . . . . . . . . . . . . .

Adjusting Dial-A-Height 13

. . . . . . . . . . . . . .

Adjusting Anti-Scalp Rollers 13

. . . . . . . . . . .

Adjusting Gage Wheels

. . . . . . . . . . . . . . .

Tips for Mowing Grass 15

. . . . . . . . . . . . . . .

Maintenance 16

. . . . . . . . . . . . . . . . . . . . . . . . . . . .

Service Interval Chart 16

. . . . . . . . . . . . . . . .

Cutting Blade

. . . . . . . . . . . . . . . . . . . . . . .

Greasing and Lubrication 19

. . . . . . . . . . . . . .

Blade Drive Belt 19

. . . . . . . . . . . . . . . . . . . . .

Washing Underside of Mower 20

. . . . . . . . . .

Storage 21

. . . . . . . . . . . . . . . . . . . . . . . . . . . .

Troubleshooting 22

. . . . . . . . . . . . . . . . . . . . . . . . .

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.

ON GRASS DEFLECT

(Part No. 93–7317)

ON MOWER REAR CENTER

(Part No. 93–7325)

ON GRASS DEFLECT

(Part No. 93–7316)

NEXT T

O GAGE WHEELS

(Part No. 93–7282)

Installation

Loose

Parts

Note: Use the chart below to identify parts used for assembly.

DESCRIPTION QTY. USE

Grass deflector

Spring

Washer 1/2” (13 mm)

Cotter pin

Plastic washer

Rubber bushing

Lock nut 3/8”

Install grass deflector

Rear link

Washer

Cotter pin

Install rear link

Adjustable links

Washer 1/2” (13 mm)

Cotter pin 1” (26 mm)

Install front mount to mower

Hairpin cotter–large

Washer 3/4” (19 mm)

Hairpin cotter–small

Washer 1/2” (13 mm)

Install mower to tractor

Operator’

s Manual

Read before operating

Installation

Mower

Preparation

1. Place spring short end into small hole in the

grass deflector (Fig. 1).

2. Position spring and grass deflector over post on

rear of deck and secure with cotter pin (Fig. 1).

3. Slide rubber bushing and plastic washer over

stud at front of mower.

4. Place grass deflector over stud and secure with

second plastic washer and lock nut (Fig. 1).



Figure 1

1. Grass

deflector

2. Spring

Cotter pin

Rubber bushing

Plastic washer

Lock nut

7. Washer

IMPORTANT: Discharge chute must be

spring loaded in the down position. Lift chute

up to test that it snaps to the full down

position.

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

OID THE HAZARD

•

NEVER r

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).

Installation

5. Place rear link on mower rear bracket and secure

with 1/2” (13 mm) washer and cotter pin

(Fig. 2).

mĆ2438

Figure 2

1. Rear

link

2. Bracket 3. W

asher 1/2” (13 mm)

Cotter pin

6. Place adjustable links on mower brackets and

secure with 1/2” (13 mm) washers and cotter

pins (Fig. 3).

mĆ2437

Figure 3

1. Adjustable

link

2. Bracket 3. W

asher 1/2” (13 mm)

Cotter pin

Installation

Installing

the Mower

1. Park the machine on a level surface, disengage

the power take off (PTO), set the parking brake,

and turn the ignition key to “OFF” to stop the

engine. Remove the key.

2. Turn the front wheels fully to the left and raise

attachment lift lever all the way to the latched

position; refer to tractor Operator’

s Manual.

3. Slide the mower under the chassis from the right

side (Fig. 4) and align rear mounting bushings

with ends of lift arms.

4. Turn Dial-a-Height knob counterclockwise, all

the way, and lower the attachment lift lever to

the mounting position; refer to Operation page .

5. Place rear guide bushings, first left side then

right, onto lift arms then slide deck left into

position. Secure with 3/4” (19 mm) washers and

large hairpin cotters (Fig. 4).

6. Attach rear link to attachment lift with 1/2”

(13 mm) washer and small hairpin cotter

(Fig. 4).

m-2445

Figure 4

1. Lift

arms

2. W

asher 3/4” (19 mm)

Hairpin cotter-large

Attachment lift

Rear link

6. W

asher 1/2” (13 mm)

Hairpin cotter-small

7. Install front adjustable links to front lift arms

with washers and small hairpin cotters (Fig. 5).

m-2430

Figure 5

1. Adjustable

link

Front lift arm

3. W

asher 1/2” (13 mm)

Hairpin cotter-small

Installation

8. Pull on idler pulley to relax belt tension and

install mower drive belt into the top engine drive

pulley groove (Fig. 6).

Note: Make sure belt is properly located in

engine and deck pulleys and around

idler pulley.

IMPORTANT: If extreme low cut height is

used install mower drive belt in bottom

engine pulley groove.

Figure 6

op V

iew

1. Mower

belt

Engine pulley

9. Check mower level; refer to Side-to-Side Mower

Leveling page 8, and Front-to-Rear Blade

Leveling page 9.

10. Raise attachment lift lever all the way to the

latched position and adjust mower height-of-cut;

and transport height adjustment; refer to page 7.

Transport

Height Adjustment

Transport height is set at the factory and should not

need adjustment; however if the belt covers contact

the footrest in the raised position, adjustment is

required.

1. Adjust by turning transport height nut, (Fig. 7)

on lift mechanism, clockwise to raise or

counterclockwise to lower mower.

2. Adjust nut until there is 1/16”–1/8” (2–5 mm)

clearance between belt cover and left footrest.

m–1223

Figure 7

1. Nut

Installation

Side-to-Side

Mower Leveling

The mower blades must be level from side to side.

Check the side-to-side level any time you install the

mower or when you see an uneven cut on your lawn.

Before you level the mower, set the air pressure in the

front and rear tires to 12 psi (.85 kPa).

2-3/4”–4” (70–102 mm) Height-of-Cut

Range

When the mower height-of-cut is set to the 2-3/4”–4”

(70–102 mm) range the mower is suspended from the

tractor.

1. Park the machine on a level surface, disengage

the power take off (PTO), set the parking brake,

and turn the ignition key to “OFF” to stop the

engine. Remove the key.

2. Raise attachment lift lever all the way to the

latched position.

3. Carefully rotate blade(s) side to side (Fig. 8).

Measure between the outside cutting edges and

the flat surface (Fig. 8). If both measurements

are not within 3/16” (5 mm), an adjustment is

required; refer to steps 4 and 6.

Front

m–1078

Figure 8

1. Blades

side to side

Outside cutting edges

Measure here

4. Loosen adjustment bolt on one side and rotate

hanger bracket to raise or lower mower (Fig. 9).

5. After adjusting, tighten bolt and check

side-to-side level.

IMPORTANT: If hanger is rotated to the end

of adjustment on one side and mower is not

level, adjust the opposite side.

m–1224

Figure 9

1. Bolt 2. Hanger

bracket

6. Now check the front-to-rear blade slope; refer to

Front-to-Rear Blade Slope, page 9.

3/4”–2-3/4” (19–70 mm) Height-of-Cut

Range

When the mower height-of-cut is set to the

3/4”–2-3/4” (19–70 mm) range the rear gage wheels

contact the ground. There is no side-to-side

adjustment for this height range, see Front-to-Rear

Blade Slope.

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