Toro Groundsmaster 300 Series User manual

FORM NO. 3326467
The Toro Company  2001
OPERATOR'S
MANUAL
72Flex DeckSide Discharge Mower
FOR GROUNDSMASTER300 SERIES TRACTION UNITS
MODEL NO. 30799 - 210000001 & UP
To ensure maximum safety, optimum performance,
and to gain knowledge of the product, it is essential
that you or any other operator of the machine read
and understand the contents of this manual before
the engine is ever started. Pay particular attention
to the SAFETY INSTRUCTIONS highlighted by this
symbol 
The safety alert symbol means CAUTION,
WARNING or DANGER  personal safety
instruction. Failure to comply with the instruction
may result in personal injury.

2
FOREWORD
The 72" Flex Deck Side Discharge Mower has advanced concepts in engineering, design and safety; and if
maintained properly, will give excellent service.
Since this is a high-quality product, Toro is concerned about the future use of the machine and safety of the user.
Therefore, read this manual to familiarize yourself with proper set-up, operation and maintenance instructions. The
major sections of the manual are:
1. Safety Instructions 3. Before Operating 5. Lubrication
2. Setup Instructions 4. Operation 6. Maintenance
Certain information in this manual is emphasized. DANGER, WARNING and CAUTION identify personal safety
related information. IMPORTANT identifies mechanical information demanding special attention. Be sure to read
this directive because it deals with the possibility of damaging a part or parts of the machine. NOTE identifies general
information worthy of special attention.
TABLE OF CONTENTS
Page Page
SAFETY AND INSTRUCTION DECALS 3. . . . . . . . .
SPECIFICATIONS 4. . . . . . . . . . . . . . . . . . . . . . . . . . . .
LOOSE PARTS 5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
SETUP INSTRUCTIONS 6. . . . . . . . . . . . . . . . . . . . . . .
Mount Hose Clamp 6. . . . . . . . . . . . . . . . . . . . . . . .
Grass Deflector 6. . . . . . . . . . . . . . . . . . . . . . . . . . . .
Mount Rear Castor Wheels 6. . . . . . . . . . . . . . . . .
Connect RightHand Push Arm to Cutting Unit 6
Connect LeftHand Push Arm to Cutting Unit 7. .
Mount Front Lift Arm 8. . . . . . . . . . . . . . . . . . . . . . .
Mount Rear Lift Bracket 8. . . . . . . . . . . . . . . . . . . .
Install Drive Shaft to Traction Unit 9. . . . . . . . . . . .
Install Lift Chains 9. . . . . . . . . . . . . . . . . . . . . . . . . .
Adjust Counterbalance Spring 9. . . . . . . . . . . . . .
Grease Cutting Unit 9. . . . . . . . . . . . . . . . . . . . . . . .
Install Rear Weight 10. . . . . . . . . . . . . . . . . . . . . . . .
BEFORE OPERATING 11. . . . . . . . . . . . . . . . . . . . . . .
Check Lubricant in Gear Box 11. . . . . . . . . . . . . . .
Adjusting HeightofCut 11. . . . . . . . . . . . . . . . . . . .
Check Tire Pressure 12. . . . . . . . . . . . . . . . . . . . . .
Adjust Skid 12. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Adjust Rollers 12. . . . . . . . . . . . . . . . . . . . . . . . . . . .
OPERATING INSTRUCTIONS 13. . . . . . . . . . . . . . . . .
Grass Deflector 13. . . . . . . . . . . . . . . . . . . . . . . . . . .
Operating Tips 13. . . . . . . . . . . . . . . . . . . . . . . . . . .
LUBRICATION 14. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Grease Bearings, Bushings and Gear Box 14. . .
MAINTENANCE 15. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Trouble Shooting 15. . . . . . . . . . . . . . . . . . . . . . . . .
Separating Cutting Unit from Traction Unit 16. . .
Mounting Cutting Unit to Traction Unit 16. . . . . . .
Adjusting Drive Belts 16. . . . . . . . . . . . . . . . . . . . . .
Replacing Drive Belts 17. . . . . . . . . . . . . . . . . . . . .
Servicing Front Bushings in Castor Arms 17. . . .
Servicing Castor Wheels and Bearings 17. . . . . .
Replacing Grass Deflector 18. . . . . . . . . . . . . . . . .
Removing Cutter Blade 18. . . . . . . . . . . . . . . . . . . .
Inspecting and Sharpening Blade 19. . . . . . . . . .
Correcting Cutting Unit Mismatch 20. . . . . . . . . . .
IDENTIFICATION AND ORDERING 20. . . . . . . . . . . .

3
SAFETY AND INSTRUCTION DECALS
The following decals are installed on the machine. If any become damaged or illegible, replace it. The decal part
number is listed below and in your parts catalog. Replacements can be ordered from your Authorized Toro
Distributor.
93-3709
100-6582
1. Warning—Cuttinghazard of hands
93-6696
1. Warning—part is spring loaded. Read the operator’s manual.
100-8038
1. Height-of-cut setting for rear deck chain
93-7818
1. Warning—torque the blade bolt to 115–149 N⋅m. Read the
operator’s manual for further instructions.
104-2526
1. Warning—read the operator’s manual.
2. Lower cutting unit before going down hills. When operating the
Groundsmaster 325-D or 345 two-wheel drive or four-wheel
drive, rear weight must be added to the machine.
54-9220
100-8046
100-6578
1. Entanglement hazard—keep belt covers in place. Stay away
from moving parts.

4
SAFETY AND INSTRUCTION DECALS
93-6697
1. Changethe gearbox oil every 50 hours. Read the operator’s
manual for further instructions.
93-7824
1. Thrown object hazard—keep bystanders away.
2. Thrown object hazard from mower—keep the deflector in place.
3. Cutting/dismemberment hazard of hands or feet—stay away
from rotating blades and moving parts.
100-8039
1. Height-of-cut setting for rear castor wheels on left chamber
104-7449
1. Height-of-cut setting for rear castor wheels on right chamber
92-3035
1. Height-of-cut setting for front castor wheels.
SPECIFICATIONS
Width of Cut: 72″
Configuration: Three blades, one blade center
section, and two 1 blade floating wings. Wings flex up
and down 12 degrees in a single plane perpendicular
to from center section.
Height of Cut: Adjustable front and rear, in .50 inch
increments from 1 to 4 inches.
Construction: 12gauge steel, 5.25 inches deep,
welded construction and reinforced with 10gauge
steel channels.
Blades: Three 25 inch long, .25 inch thick, heat treated
steel blades.
Cutter Drive: PTO driven gearbox with 1.26-1 spiral
bevel gears. One B" section belt on center section.
One B" section belt on each wing. Center section
tensioned through spring loaded idler. Wings
tensioned through adjustable fixed idler.
Spindles: Cast iron housing, 11/4 inch dia shaft with
welded blade retainer. Turning on two greaseable
tapered roller bearings. A positive splined connection
attaches pulley to spindle shaft.
Castor Wheels: Front: Four 8 inch pneumatic wheels
with greaseable roller bearings. Rear: Two 8 inch
pneumatic wheels with greaseable roller bearings (one
on each wing). Center section suspended from push
arms.
Anti Scalp: Antiscalp cup (11 inch diameter) located
on each blade. One antiscalp roller on rear of center
section. Adjustable skid on right wing.
Trimability: 34″uncut circle, 25″uncut circle with use
of individual wheel brakes.
Tip Speed: 15,000 ft./min. @ 3200 engine RPM.
Discharge: Lefthand, side discharge (recycler kit
available).
Safety Certification: To meet, proposed ANSI
B71.4-1990 and 1999, safety specifications for power
lawn mowers, and CE requirements.
Belt Covers: Steel covers bolted down, meets CE
requirements.
Sound Levels: 90 dBa @ operator ear.
Weight: 550 lb.
Width: 831/2 in.

5
SPECIFICATIONS
Options:
High Lift Blade: Part No. 232410
Height of cut spacers 1/4″Part No. 548810
Foam Filled 8″Tire Part No. 935974
Specifications and design subject to change without notice.
LOOSE PARTS
NOTE: Use this chart as a checklist to ensure that all parts have been received. Without these parts, total set-up
cannot be completed.
Description Qty. Use
Hose clamp
Hose bracket
Capscrew, 1/4 x 1 in.
Nut
1
2
2
2
Install hose clamp
Push arm adapter
Push arm plate
Capscrew, 3/8 x 2-3/4 in.
Flat washer
Nut
1
1
4
4
4
Install right push arm adapter
Front lift arm
Locknut
Capscrew, 3/8 x 3 in.
1
2
2
Rear lift bracket
Square U-bolt
U-bolt
Height-of-cut chain
Clevis pin
Hairpin
Nut
1
1
1
1
1
1
6
Install rear lift support
Capscrew, 3/8 x 7/8 in. 4Secure covers for CE
Roll pin 1Install drive shaft
Danger decal 1Place over 54-9220 on deflector for CE.
Parts catalog 1
Operator’s manual 1Read before operating the machine.
Registration card 1Fill out and return to Toro.

6
SETUP INSTRUCTIONS
MOUNT HOSE CLAMP (Fig. 1 -2)
1. Using dimensions shown in figure 1, locate, mark
and drill (2) .28 in. dia. holes in traction unit platform.
Use caution when drilling as there are hoses and
cables under platform.
Figure 1
.75"
4.41"
12.75"
2. Secure hoses to under side of platform with clamp,
(2) brackets, capscrews and nuts. Position brackets to
fit contour of hoses and platform.
Figure 2
1
1. Clamp
2. Bracket (2)
2
GRASS DEFLECTOR (Fig. 3)
3. Remove shipping bands allowing deflector to be
lowered.
Deflector is spring loaded in the down position
and will rotate downward, if not retrained,
when band is cut. If done improperly, personal
injury may occur.
WARNING
Figure 3
1. grass Deflector
1
MOUNT REAR CASTOR WHEELS (Fig. 4)
The rear castor wheels are shipped secured upside
down to deck brackets.
1. Remove capscrew and locknut securing front of
rear castor pivot to deck bracket.
Figure 4
1. Rear castor pivot arm
1
2. Turn pivot right side up and secure front of castor
pivot arm to front of deck bracket with capscrew and
locknut removed.
3. Align the pivot arm holes with selected
heightofcut bracket holes in the deck frame, install
clevis pin and secure with hairpin cotter.
4. Repeat procedure on other castor wheel
assembly.
CONNECT RIGHTHAND PUSH ARM TO
CUTTING UNIT (Fig. 5- 6)
Note: Ball joints are shipped with traction unit.
1. Thread a jam nut fully onto ball joint.
2. Thread ball joint into push arm adapter until a
dimension of 23/8 in. from end of adapter to center of
ball joint is attained. Do not tighten jam nut.

7
SETUP INSTRUCTIONS
Figure 5
1. Ball joint
2. Jam nut
3. Push arm adapter
1
323/8
in.
2
3. Remove 2 flange head capscrews and flange nuts
securing right hand ball joint mount to castor arm.
Remove ball joint mount from castor arm.
4. Install ball joint to right hand ball joint mount with a
castle nut and cotter pin (Fig. 6).
5. Loosely mount push arm adapter to bottom of right
push arm with a push arm bracket and (4) capscrews,
flat washers, and flange head locknuts. Push arm
adapter to be positioned approximately 1 in. (25 mm)
from end of square tube on right push arm (Fig. 6).
Note: Push arm plate to be positioned on top of push
arm. Push arm adapter is mounted to under side of
push arm.
6. Move cutting unit into position in front of traction
unit.
Figure 6
1. RightHand Push Arm
2. Push arm adapter
3. Push arm bracket
4. Ball Joint Mount
12
3
4
1 in. (25 mm)
Since the right hand push arm is spring loaded
to about 100 pounds, a helper is needed to
push the arm down. Sudden release of the
push arm could cause injury.
WARNING
7. Have a helper carefully push down on the right
push arm until holes in ball joint mount line up with
holes in castor arm. Immediately slide a 4 x 4 in. block
of wood between top of push arm and underside of
chassis.
8. Secure ball joint mount to castor arm with 2 flange
head capscrews and flange nuts previously removed.
Note: Capscrew heads to be positioned on inside of
castor arm.
9. Tighten large jam nut securing ball joint to push
arm adapter (FIg. 5). When tightening jam nut, hold
ball joint straight to permit proper oscillation during
raising and lowering of cutting unit. Carefully remove
wood block holding push arm down.
CONNECT LEFTHAND PUSH ARM TO
CUTTING UNIT (Fig. 7- 8)
Since the left hand push arm is spring loaded
to about 150 pounds, a helper is needed to
push the arm down. Sudden release of the
push arm could cause injury.
WARNING
1. Thread a jam nut fully onto ball joint.
2. Thread ball joint into left push arm until a
dimension of 23/8 in. from end of push arm to center of
ball joint is attained. Do not tighten jam nut.
Figure 7
1. Ball joint
2. Jam nut
2. Left push arm
1
3
23/8 in.
2

8
SETUP INSTRUCTIONS
3. Remove 2 flange head capscrews and flange nuts
securing lefthand ball joint mount to castor arm.
Remove ball joint mount from castor arm.
4. Install ball joint to lefthand ball joint mount with a
castle nut and cotter pin.
Figure 8
1. L.H. Push Arm
2. Ball joint
3. Ball Joint Mount
1
2
3
5. Have a helper carefully push down on the push
arm until holes in ball joint mount line up with holes in
castor arm. Immediately slide a 4 x 4 in. block of wood
between top of push arm and underside of chassis.
Make sure the wooden block does not slip out
accidentally. Sudden release of the push arm
could cause injury.
WARNING
6. Secure ball joint mount to castor arm with flange
head capscrews and flange nuts previously removed.
Note: Flange head capscrew heads to be positioned
on inside of castor arm.
7. Tighten large jam nut securing ball joint to push
arm. When tightening jam nut, hold ball joint straight to
permit proper oscillation during raising and lowering of
cutting unit. Carefully remove wood block holding
push arm down.
Note: Position deck so there is a 2 in. gap between
front of traction unit tires and rear of deck (Fig. 9).
2 in.
Figure 9
8. Tighten fasteners securing right push arm adapter
to right push arm.
Note: Periodically check and tighten the push arm
adapter capscrews.
MOUNT FRONT LIFT ARM (Fig. 10 & 11)
1. Remove rubber bumper from bottom of traction
Tbar.
Figure 10
1. Traction Tbar
2. Rubber bumper
1
2
2. Slide front lift arm onto traction unit tbar,
positioning as shown in Figure 11.
3. Secure front lift arm to tbar with with 2 capscrews
and locknuts.
Figure 11
1. Front lift arm
2. Traction unit Tbar
1
2
MOUNT REAR LIFT BRACKET (Fig. 12-13)
1. Loosely mount rear lift bracket to right push arm
with square Ubolt, 2 nuts, and flange nuts. Bracket to
be positioned on push arm so it is centered and parallel
to castor arm.
Figure 12
1. Lift bracket
2. Square u-bolt
3. U-bolt
1
2
3

9
SETUP INSTRUCTIONS
Figure 13
1. Lift bracket
2. Castor arm
1
2
2. Hook H.O.C. chain onto remaining Ubolt.
3. Thread a hex nut onto each end of Ubolt.
4. Loosely mount Ubolt and H.O.C. chain to rear lift
bracket 2 nuts and 2 flange nuts
5. Mount heightofcut chain to 2 in. heightofcut hole
with clevis pin and hairpin cotter.
6. Position rear castors in 2 in. heightofcut.
7. Adjust nuts on Ubolt until rear of deck is parallel to
floor (Distance from floor to bottom rear edge of all
three deck chambers must be equal).
INSTALL DRIVE SHAFT TO TRACTION
UNIT
NOTE: To ease installation of PTO shaft, remove
right traction tire.
1. Slide smaller yoke end of drive shaft onto traction
unit PTO shaft while aligning mounting holes. Secure
with roll pin.
Figure 14
1. Drive shaft
1
INSTALL LIFT CHAINS (Fig. 15)
1. Connect lift chains to lift arm and cutting unit chain
brackets with (6) shackles, (3/8 x 11/2 in.) shackle pins
and (1/8 x 3/4 in.) cotter pins. To ensure that cutting unit
lifts properly, secure chains to the following links when
connecting:
Front Left - 8th link
Front Right - 8th link
Rear - 14th link (All links)
Check operation to ensure that all chains lift deck tight
against stops when lift arm is raised.
Figure 15
1. Front Left Lift Chain
2. Front Right Lift Chain
3. Rear Lift Chain
1
2
3
ADJUST COUNTER BALANCE SPRING
(Fig. 16)
1. Tighten nuts on adjusting rod until there is equal
weight on castor wheels of left and left center
chambers.
Figure 16
1. Counter balance spring
2. Adjusting rod
1
2
GREASE CUTTING UNIT
Before the cutting unit is operated, it must be greased
to ensure proper lubricating characteristics: refer to
Lubrication, page 13. Failure to properly grease the
cutting unit will result in premature failure of critical
parts.

10
SET-UP INSTRUCTIONS
INSTALL REAR WEIGHT
GROUNDSMASTER 300 Series Traction Units comply with ANSI B71.4-1999 Standard when equipped with rear
weight. Use chart below to determine combinations of weight required. Order parts from your local Authorized Toro
Distributor.
Rear Weight Kit
(includes two 35 lb.
weights and mounting
hardware)
Groundsmaster 328D
(30626/30630*)
Rear Weight
Required
Weight Part
Number
Weight
Description Qty.
Groundsmaster 325D
(30788/30739*) 245780
210 lb. Rear Weight Kit
(includes two 35 lb.
weights and mounting
hardware)
3
Traction Unit
Description
245780245 lb. Rear Weight Kit
(includes two 35 lb.
weights and mounting
hardware)
&
3
245790 Rear Weight Kit
(includes one 35 lb.
weight and mounting
hardware)
1
Groundsmaster 325D
4 Wheel Drive
(30795/30741)
70 lb. 1245780
245780210 lb. Rear Weight Kit
(includes two 35 lb.
weights and mounting
hardware)
3
Groundsmaster 345
(30789)
Rear Weight Kit
(includes two 35 lb.
weights and mounting
hardware)
Groundsmaster 328D
4 Wheel Drive
(30627/30631)
70 lb. 245780 1
*Models 30739 and 30630 include 1 Rear Weight Kit.
BEFORE OPERATING
CHECK LUBRICANT IN GEAR BOX
The gear box in designed to operate on SAE 80-90 wt.
gear lube. Although the gear box is shipped with
lubricant from the factory, check the level before
operating the cutting unit.
1. Position the machine on a level surface.
2. Remove check plug from side of gear box and
make sure lubricant is up to bottom of hole. If level of
lubricant is low, add enough lubricant to bring it up to
bottom of hole.
Figure 17
2. Drain Plug
1
2
1. Fill/Check Plug