Toro Wheel Horse 78350 Bedienungsanleitung

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. 3318–948 Rev. A

Wheel

Horse



42” Rear Discharge

Mower

for

Classic

Garden T

ractors

Model No. 78350 – 7900001 & Up

The TORO Co. – 1996

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–2831

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.

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

Assembly 3

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

Loose Parts 3

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

Attach Height-of-Cut Lever 3

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

Attach Adjustable Link 3

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

Installing the Mower 4

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

Front-to-Rear Blade Slope 6

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

Transport Height Adjustment 7

. . . . . . . . . . .

Removing the Mower 8

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

Operation 10

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

Operating the Power Take Off (PTO) 10

. . . .

Attachment Lift Lever 10

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

Page

Attachment Power Lift 11

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

Adjusting Height-of-Cut 11

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

Tips for Mowing Grass 12

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

Maintenance 13

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

Service Interval Chart 13

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

Cutting Blade

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

Greasing and Lubrication 16

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

Blade Drive Belt 16

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

Power Take Off (PTO) Belt 17

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

Storage 18

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

Troubleshooting 19

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

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 MOWER LEFT AND

RIGHT SIDES

(Part No. 92–71

10)

NEXT T

O H-O-C LEVER

(Part No. 106748)

ON LEFT AND RIGHT

REAR OF MOWER

(Part No. 43–8480)

Assembly

Loose

Parts

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

DESCRIPTION QTY. USE

Height-of-cut lever

Spring

Install height-of-cut lever

V belt

Idler assembly

Belt cover

Locknut

Install mower to tractor

Operator’

s Manual

Read before operating

Attach

Height-of-Cut Lever

1. Loosen nuts securing quadrant to mower(Fig. 1).

2. Place spring onto long pin of lever

. Compress

spring and slide lever into square tube. Insert

short pin of lever into a quadrant hole hold in

position. Tighten quadrant nuts (Fig. 1).

m–2834

Figure 1

1. Nut

2. Quadrant

3. Height-of-Cut

lever

4. Spring

Square tube

Attach

Adjustable Link

1. Place adjustable link trunnion into rear wheel

shaft bracket and secure with hairpin cotter

(Fig. 2).

m–2815

Figure 2

1. Adjustable

link trunnion

Hairpin cotter

Assembly

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. Open front and mid-mount hitches by pushing

release button and moving lock handles forward

(Fig. 3).

m–2312

Figure 3

1. Front

hitch

Mid-mount hitch

Release button

Lock handle

4. Slide the mower under the chassis from the right

side and align attachment lift with slot in center

lever bar (Fig. 4).

5. Straighten the front wheels, turn Dial-A-Height

knob counterclockwise, all the way, and lower

the attachment lift lever to the mounting

position; refer to tractor Operator’

s Manual.

6. Place attachment lift pin into slot in center lever

bar and secure with 3/4” (19 mm) washer and

hairpin cotter (Fig. 4).

m–2824

Figure 4

1. Attachment

lift

Slot-center level bar

3. Washer

Hair pin cotter

Assembly

7. Rotate front mounting shaft so fork faces up and

align so spacers are between mid-mount hitch

plates (Fig. 5).

8. Lift mower with attachment lift and guide fork

to capture hitch rod (Fig. 5). Close mid-mount

hitch lock handle.

3m–2825

Figure 5

1. Front

mounting shaft

2. Fork

3. Spacer

Mid-mount hitch plate

Hitch rod

9. Remove the two wing nuts and belt cover from

the tractor (Fig. 6).

m–25341

Figure 6

6. Belt

cover

Wing nut

10. Remove hairpin cotters from trunnion and

bottom of yoke (Fig. 7).

11. Unlatch and remove locking clevis pin that

secures yoke assembly to clutch shaft. Pivot

yoke out and forward to remove from clutch

shaft and engagement plate (Fig. 7).

12. Place belt in inside pulley groove (Fig. 7).

13. Assemble yoke and engagement plate and attach

locking clevis pin, trunnion and hairpin cotters

to secure (Fig. 7).

m–3443

Figure 7

1. Hairpin

cotter

2. Trunnion

Engagement plate

Locking clevis pin

5. Yoke

Clutch shaft

Inside groove

14. Place pulley assembly into front hitch and lock

by moving latch rearward (Fig. 8).

m–2810

Figure 8

1. Pulley

assembly

Front hitch

3. Latch

15. Route belt around V and flat pulleys and loop

over center mower spindle, top pulley.(Fig. 9).

Assembly

16. Check that spacer is on shaft and install belt

cover with rod in hole. Secure with locknut

(Fig. 9).

17. Turn knob counterclockwise to tighten belt

(Fig. 9). Tighten until there is 1” (26 mm) belt

movement between engine clutch and idler

pulley when slight pressure is applied to the belt.

m–2823

Figure 9

1. V

pulley

Flat pulley

Upper mower pulley

4. Spacer

Belt cover

6. Locknut

7. Knob

18. Install belt cover (Fig. 6).

Front-to-Rear

Blade Slope

Check the front-to-rear blade slope any time you

install the mower. Before checking the slope, set air

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

If the front blade tip is not 1/8–1/4” (4–7 mm) lower

than the rear blade tip, adjust the blade slope using

the following instructions:

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. Adjust height-of-cut lever on mower to the

middle of the range and lower attachment lift.

3. Carefully rotate blades so they are facing front

and rear (Fig. 10).

4. Measure between the tip of the front blade

(Fig. 10) and the tip of the rear blade to the flat

surface. If the front blade tip is not 1/8–1/4”

(4–7 mm) lower than the rear blade tip adjust

rear adjustment link.

 m–2833

Figure 10

1. Blade

front to rear

Measure front blade tip

Measure rear blade tip

Measure here

Assembly

5. To adjust front-to rear blade slope turn locknut

on rear adjustable link (Fig. 11).

Note: To raise the front of the mower, turn

locknut clockwise, to lower front turn

counterclockwise.

m–2815

Figure 1

1. Adjustable

link

2. Locknut

Transport

Height Adjustment

Transport height is adjusted to stabilize the mower in

the up, locked position.

1. Raise attachment lift lever all the way to the

latched position. Check if bumpers, on rear of

mower draft bars contact under footrests.

2. Adjust lift chain by turning trunnion on eyebolt

in rear hole of tractor lift (Fig. 12). Turn

trunnion clockwise to raise or counterclockwise

to lower mower.

3. Transport level stops are normally in the bottom

of the slot, however they can be adjusted up for

side-to-side level when extra weight from a grass

catcher is on one side (Fig. 12).

m–2813

Figure 12

1. Bumper

2. Trunnion 3. Leveling

bolts

Assembly

Removing

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. Remove the two wing nuts and belt cover from

the tractor (Fig. 13).

m–25341

Figure 13

4. Belt

cover

Wing nut

3. Turn knob on idler assembly clockwise to loosen

belt. Remove belt from upper mower pulley

(Fig. 14).

m–2823

Figure 14

1. Knob 2. Upper

mower pulley

4. Remove hairpin cotters from trunnion and

bottom of yoke (Fig. 15).

5. Unlatch and remove locking clevis pin that

secures yoke assembly to clutch shaft. Pivot

yoke out and forward to remove from clutch

shaft and engagement plate (Fig. 15).

6. Remove belt from pulley (Fig. 15).

7. Assemble yoke and engagement plate and attach

locking clevis pin, trunnion and hairpin cotters

to secure (Fig. 15).

m–3443

Figure 15

1. Hairpin

cotter

2. Trunnion

Engagement plate

Locking clevis pin

5. Yoke

Clutch shaft

Inside groove

8. Open front hitch and remove pulley assembly

(Fig. 16).

m–2810

Figure 16

1. Pulley

assembly

Front hitch

3. Latch

9. Raise attachment lift lever to the mounting

position; refer to tractor Operator’

s Manual.

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