Toro 78350 Operator's Manual
FORM NO. 3318–948 Rev. A
Wheel
Horse
42” Rear Discharge
Mower
for
Classic
Model No. 78350 – 7900001 & 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–2831
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
The TORO Co. – 1996
Contents
Page
Safety and Instruction Decals 2.
Assembly 3
Operation 10
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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
Operating the Power Take Off (PTO) 10
Attachment Lift Lever 10
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Page
Attachment Power Lift 11
Adjusting Height-of-Cut 11
Tips for Mowing Grass 12
Maintenance 13
Service Interval Chart 13
Cutting Blade14. . . . . . . . . . . . . . . . . . . . . . .
Greasing and Lubrication 16
Blade Drive Belt 16
Power Take Off (PTO) Belt 17
Storage 18
Troubleshooting 19
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1
Safety
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 LEFT AND RIGHT
REAR OF MOWER
(Part No. 43–8480)
NEXT T
O H-O-C LEVER
(Part No. 106748)
ON MOWER LEFT AND
RIGHT SIDES
(Part No. 92–71
10)
2
Assembly
Loose
Parts
Note: Use the chart below to identify parts used for assembly.
DESCRIPTION QTY. USE
Height-of-cut lever
Spring
V belt
Idler assembly
Belt cover
Locknut
Operator’
Attach
s Manual
Height-of-Cut Lever
1. Loosen nuts securing quadrant to mower(Fig. 1).
1
1
1
1
1
1
1
Install height-of-cut lever
Install mower to tractor
Read before operating
Attach
Adjustable Link
1. Place adjustable link trunnion into rear wheel
shaft bracket and secure with hairpin cotter
2. Place spring onto long pin of lever
. Compress
(Fig. 2).
spring and slide lever into square tube. Insert
short pin of lever into a quadrant hole hold in
position. Tighten quadrant nuts (Fig. 1).
2
4
1. Nut
2. Quadrant
3. Height-of-Cut
5
lever
Figure 1
4. Spring
5.
Square tube
3
2
1
1
m–2815
Figure 2
m–2834
1. Adjustable
link trunnion
2.
Hairpin cotter
3
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).
2
3
1
3
m–2312
1. Front
2.
hitch
Mid-mount hitch
4
Figure 3
3.
Release button
4.
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).
1
2
4
3
4
m–2824
Figure 4
1. Attachment
2.
Slot-center level bar
lift
3. Washer
4.
Hair pin cotter
4
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.
5
4
1
2
3
3
m–2825
Figure 5
1. Front
2. Fork
3. Spacer
mounting shaft
4.
Mid-mount hitch plate
5.
Hitch rod
9. Remove the two wing nuts and belt cover from
the tractor (Fig. 6).
2
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).
1
2
5
4
1. Hairpin
2. Trunnion
3.
4.
cotter
Engagement plate
Locking clevis pin
Figure 7
5. Yoke
6.
Clutch shaft
7.
Inside groove
3
7
6
1
m–3443
6. Belt
cover
14. Place pulley assembly into front hitch and lock
by moving latch rearward (Fig. 8).
2
2
Figure 6
7.
Wing nut
m–25341
3
1
m–2810
Figure 8
1. Pulley
2.
assembly
Front hitch
3. Latch
15. Route belt around V and flat pulleys and loop
over center mower spindle, top pulley.(Fig. 9).
5
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.
3
4
5
6
1. V
pulley
2.
Flat pulley
3.
Upper mower pulley
4. Spacer
Figure 9
Belt cover
5.
6. Locknut
7. Knob
1
2
7
m–2823
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.
18. Install belt cover (Fig. 6).
4
1. Blade
2.
front to rear
Measure front blade tip
2
1
m–2833
3
4
Figure 10
3.
Measure rear blade tip
4.
Measure here
6
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