Toro 38700, 23740 Service Manual
LCE/Residential Products/
Walk-Behind Rotary Broom
Service Manual
Siteworks
ABOUT THIS MANUAL
This service manual was written expressly for Toro and Lawn-Boy service technicians. The Toro Company has made
every effort to make the information in this manual complete and correct.
Basic shop safety knowledge and mechanical/electrical skills are assumed. The Table of Contents lists the systems and
the related topics covered in this manual.
The Toro Walk-Behind Rotary Broom, model year 2014, is covered in this manual. The manual may also be specied for
use on later model products.
Due to the compact design, parts were removed for photographic purposes when necessary.
We are hopeful that you will nd this manual a valuable addition to your service shop. If you have any questions or
comments regarding this manual, please contact us at the following address:
The Toro Company
Residential and Landscape Contractor Service Training Department
8111 Lyndale Avenue South
Bloomington, MN 55420
The Toro Company reserves the right to change product specications or this manual without notice.
© 2014 The Toro Company
All Rights Reserved
TABLE OF CONTENTS
Chapter 1 - Safety Information ........................................................................................................1-1
Chapter 2 - Specications & Maintenance .....................................................................................2-1
Checking the Sweeping Path ..............................................................................................................................................2-3
Adjusting the Broom Height .................................................................................................................................................2-4
Adjusting Broom Side Angle ................................................................................................................................................2-4
Recommended Maintenance Schedule...............................................................................................................................2-5
Checking the Engine Oil Level ............................................................................................................................................2-6
Checking the Traction Cable ...............................................................................................................................................2-6
Checking for Loose Hardware .............................................................................................................................................2-6
Changing the Engine Oil......................................................................................................................................................2-7
Checking the Tire Pressure .................................................................................................................................................2-7
Checking the Condition of the Belts ....................................................................................................................................2-7
Lubricating the Broom Angle Lock Pin and Hex Shaft .........................................................................................................2-8
Checking the Spark Plug .....................................................................................................................................................2-8
Checking the Broom Cable..................................................................................................................................................2-9
Checking the Broom Shaft Shear Pin ..................................................................................................................................2-9
Checking the Broom Segments .........................................................................................................................................2-10
Adjusting the Traction Cable..............................................................................................................................................2-10
Adjusting the Broom Drive .................................................................................................................................................2-11
Adjusting the Wheel Clutch Cable .....................................................................................................................................2-11
Troubleshooting .................................................................................................................................................................2-12
Chapter 3 - Controls .........................................................................................................................3-1
Sub System Handle .............................................................................................................................................................3-2
Sub System Control Panel ..................................................................................................................................................3-3
Shift Lever ...........................................................................................................................................................................3-4
Shift Rod Adjustment ...........................................................................................................................................................3-4
Auger Control ......................................................................................................................................................................3-4
Auger Cable Adjustment ......................................................................................................................................................3-5
Traction Control ...................................................................................................................................................................3-5
Traction Cable Adjustment ..................................................................................................................................................3-6
Clutch Cable Replacement Removal...................................................................................................................................3-6
Replacement .......................................................................................................................................................................3-7
Chapter 4 - Belt Replacement..........................................................................................................4-1
Subsystem Engine...............................................................................................................................................................4-2
Auger Belt Removal.............................................................................................................................................................4-3
Auger Belt Installation..........................................................................................................................................................4-4
Traction Belt Removal .........................................................................................................................................................4-5
Chapter 5 - Traction Drive System ..................................................................................................5-1
Sub System Frame ..............................................................................................................................................................5-2
Sub System Clutch Drive.....................................................................................................................................................5-3
Sub System Clutch Pack .....................................................................................................................................................5-4
Chapter 6 - Filament Replacement..................................................................................................6-1
Subsystem Broom ...............................................................................................................................................................6-2
Broom Mounting ..................................................................................................................................................................6-3
Broom Core .........................................................................................................................................................................6-4
Filament Removal................................................................................................................................................................6-5
Replacement Filament Installation ......................................................................................................................................6-6
Walk-Behind Rotary Broom Service Manual
TOC-1
General Information
1
Safety Information
SAFETY INFORMATION
This symbol means WARNING or
PER SONAL SAFETY INSTRUCTION –
read the instruction because it has to do
with your safety. Failure to comply with
the instruction may result in personal
!
This manual is intended as a service and repair manual
only. The safety instructions provided herein are for
troubleshooting, service, and repair of the Toro
Walk-Behind Rotary Broom.
injury or even death.
Think Safety First
Avoid unexpected starting of engine…
Always turn off the engine and disconnect the spark plug
wire(s) before cleaning, adjusting, or repair.
Avoid lacerations and amputations…
Stay clear of all moving parts whenever the engine is
running. Treat all normally moving parts as if they were
moving whenever the engine is running or has the
potential to start.
The Power Clear operator’s manuals contain safety
informa tion and operating tips for safe operating practices.
Operator’s manuals are available online through your Toro
parts source or:
The Toro Company
Publications Department
8111 Lyndale Avenue South
Bloomington, MN 55420
Avoid injury from batteries…
Battery acid is poisonous and can cause burns. Avoid
contact with skin, eyes and clothing. Battery gases can
explode. Keep cigarettes, sparks and ames away from
the battery.
Avoid injury due to inferior parts…
Use only original equipment parts to ensure that important
safety criteria are met.
Avoid burns…
Do not touch the engine, mufer, or other components,
which may increase in temperature during operation, while
the unit is running or shortly after it has been running.
Avoid res and explosions…
Avoid spilling fuel and never smoke while working with
any type of fuel or lubricant. Wipe up any spilled fuel or
oil immediately. Never remove the fuel cap or add fuel
when the engine is running. Always use approved, labeled
containers for storing or transporting fuel and lubricants.
Avoid asphyxiation…
Never operate an engine in a conned area without proper
ventilation.
Avoid injury to bystanders…
Always clear the area of bystanders before starting or
testing powered equipment.
Avoid injury due to projectiles…
Always clear the area of sticks, rocks or any other debris
that could be picked up and thrown by the powered
equipment.
Avoid modications…
Never alter or modify any part unless it is a factory
approved procedure.
Avoid unsafe operation…
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1-1
SAFETY INFORMATION
NOTES
1-2
Walk-Behind Rotary Broom Service Manual
SPECIFICATIONS & MAINTENANCE
Checking the Sweeping Path .........................................2-3
Adjusting the Broom Height ............................................2-4
Adjusting Broom Side Angle ...........................................2-4
Recommended Maintenance Schedule..........................2-5
Checking the Engine Oil Level .......................................2-6
Checking the Traction Cable ..........................................2-6
Checking for Loose Hardware ........................................2-6
Changing the Engine Oil.................................................2-7
Checking the Tire Pressure ............................................2-7
Checking the Condition of the Belts ...............................2-7
Lubricating the Broom Angle Lock Pin and Hex Shaft ....2-8
Checking the Spark Plug ................................................2-8
Checking the Broom Cable.............................................2-9
Checking the Broom Shaft Shear Pin .............................2-9
Checking the Broom Segments ....................................2-10
Adjusting the Traction Cable.........................................2-10
Adjusting the Broom Drive .............................................2-11
Adjusting the Wheel Clutch Cable .................................2-11
Troubleshooting ............................................................2-12
2
Specications & Maintenance
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2-1
SPECIFICATIONS & MAINTENANCE
NOTES
2-2
Walk-Behind Rotary Broom Service Manual
SPECIFICATIONS & MAINTENANCE
A
B
C
Model 38700, 23740
Engine Kohler
Clearing Width 36” (11.0m)
Starter Recoil
Fuel Capacity 1 Gallon (4.1 L)
Engine RPM 3600 ± 100 PRM
Broom Speed 200 RPM
Direct Drive Speed 6/2 Variable Speed
Steering Power Steering - RH/LH Clutch
Oil Capacity .63 Qt (.06 L)
Weight 323 lbs (146.5kg)
Width 46.5” (118cm)
Length 73.0” (185.5cm)
Height 41.5” (105.5cm)
Tire Pressure 17-20 psi (117-138 kPa)
Broom Angle Adjustments 3 position 30° each direction
®
208cc Command Pro Multi Season
2
Specications & Maintenance
Checking the Sweeping Path
A broom sweeps with the tips of its bristles. When too
much down pressure is applied, the broom is no longer
using its tips; the broom is now working with the sides of
the bristles. This limits the icking action of the bristles,
sweeping effectiveness, and can decrease broom life.
1. Drive to a at dusty area and stop the machine.
2. With the engine running move the throttle midway
between Slow and Fast. Engage the broom and
allow the broom to sweep for approximately
30 seconds.
3. Disengage the broom and stop the engine.
4. Wait for all moving parts to stop before leaving the
operating position.
5. Turn the engine On/Off switch to the Off position.
6. Make sure the area swept equals the length of the
broom and a maximum width of 2 - 4” (51-102 mm).
Fig. 001
A. 2 – 4” (51-102 mm) Maximum Width
B. Length of Broom
C. Swept Area
7. Adjust the broom height if necessary.
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2-3
SPECIFICATIONS & MAINTENANCE
A
B
C
A
Adjusting the Broom Height
1. Drive to a at dusty area and stop the machine.
2. Disengage the broom and stop the engine.
3. Wait for all moving parts to stop before leaving the
operating position.
4. Turn the engine On/Off switch to the Off position.
5. To adjust the broom height, remove and retain the
pin from the adjuster sleeve and caster wheel tube.
6. Raise or lower the caster wheel tube to achieve the
sweep area as stated in “Checking the Sweeping
Path” (page 2-3). Select any hole combination
that is in alignment to place and latch the retaining
pin; match the same position on the other side.
7. For ne tuning adjustments, slide the adjuster sleeve
one pin hole up or down on the caster wheel tube to
adjust the broom height in 1/8” (3 mm) increments
(Fig. 002). Repeat for the other caster wheel.
Adjusting Broom Side Angle
1. Disengage the broom and stop the engine.
2. Wait for all moving parts to stop.
3. Push the lever down using the right hand thumb (A)
(Fig. 003).
Fig. 003
D
Fig. 002
A. Caster Wheel Tube
B. Positions To Achieve 1/8” (3 mm) Increments
C. Pin
D. Adjuster Sleeve
• To raise the broom in 1/8” (3 mm) increments,
slightly raise the adjuster sleeve and insert the pin
into the next pin hole below the current hole used.
• To lower the broom in 1/8” (3 mm) increments,
slightly lower the adjuster sleeve and insert the pin
into the next pin hole above the current hole used.
4. Squeeze the left wheel clutch lever to the handle
and push the broom housing to the desired angle;
the broom can rotate 19° to the right or left, or
straight ahead.
5. Once the broom is positioned, release the broom
angle lever. Release the left wheel clutch lever and
make sure the broom is locked into place.
8. Once the desired height is reached, secure the pin
on each caster wheel. Recheck the sweeping area.
2-4
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SPECIFICATIONS & MAINTENANCE
Recommended Maintenance Schedule
MAINTENANCE SERVICE INTERVAL MAINTENANCE PROCEDURE
After the rst 2 hours
After the rst 5 hours Check the engine oil.
Before each use or daily
Every 50 hours
Every 100 hours
Every 160 hours Check the spark plug.
Yearly
Yearly or before storage
Check the traction cable.
Check the broom cable.
Check the engine oil level.
Check for loose hardware.
Check the broom shaft shear pin.
Check the tire pressure.
Check the condition of the belts.
Change the engine oil (more frequently in severe conditions).
Lubricate the broom angle lock pin.
Check the traction cable.
Lubricate the hex shaft.
Check the broom cable.
Check the air pressure in the drive tires and inate them to 116–137 kPa
(17–20 psi).
Drain the gasoline and run the engine to dry out the fuel tank and
the carburetor at the end of the season.
Inspect and replace the traction drive belt, if necessary.
2
Specications & Maintenance
Walk-Behind Rotary Broom Service Manual
2-5
SPECIFICATIONS & MAINTENANCE
A
B
Checking the Engine Oil Level
SERVICE INTERVAL
Before each use or daily.
Engine Oil Type: Toro 4–Cycle Premium Engine Oil
1. Turn off the engine and wait for all moving parts to
stop. Make sure the unit is on a level surface.
2. Check the oil level once the engine is cold.
3. Clean the area around the dipstick. Remove
the dipstick and wipe the oil off. Insert the
dipstick according to the engine manufacturer’s
recommendations. Remove the dipstick and read the
oil level.
4. If the oil level is low, wipe off the area around the
oil ll cap, remove the cap and ll to the Full mark
on the dipstick. Toro 4-Cycle Premium Engine Oil is
recommended; refer to the Engine Owner’s manual
for an acceptable alternative.
NOTE
Do not overll.
Checking the Traction Cable
SERVICE INTERVAL
After the rst 2 hours, Yearly.
1. Turn off the engine, wait for all moving parts to stop,
and remove the spark plug wire(s).
2. With the traction lever disengaged, check the pin
in the elongated slot in the left side of the machine
above the tire (Fig. 004). There should be a gap
of 1/4” (6 mm) from the front of the slot to the front
edge of the pin. If adjustment is necessary, see
“Adjusting the Traction Cable” (page 2-10).
NOTE
Do not operate the engine with the oil level below the
Low or Add mark on the dipstick, or over the Full mark.
Fig. 004
A. Pin
B. 1/4” (6 mm)
Checking for Loose Hardware
SERVICE INTERVAL
Before each use or daily.
1. Turn off the engine, wait for all moving parts to stop,
and remove the spark plug wire(s).
2. Visually inspect the machine for any loose hardware
or any other possible problem. Tighten the hardware
or correct the problem before operating.
2-6
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SPECIFICATIONS & MAINTENANCE
Changing the Engine Oil
SERVICE INTERVAL
After the rst 5 hours. Every 100 hours (more frequently
in severe conditions).
1. Turn off the engine and wait for all moving parts
to stop.
2. Disconnect the wire from the spark plug.
3. Drain the oil while the engine is warm
from operation.
4. Place a pan under drain tting and remove the oil
drain plug. Allow the oil to drain and replace the oil
drain plug.
5. Clean around the oil ll cap and remove the cap. Fill
to the specied capacity and replace the cap. Use
the oil recommended in the “Checking the Engine Oil
Level” (page 2-6). Do not overll.
6. Start the engine and check for leaks. Stop the
engine and recheck the oil level.
Checking the Tire Pressure
SERVICE INTERVAL
Every 50 hours.
1. Turn off the engine, wait for all moving parts to stop,
and leave engine switch in the Off position.
2. Check the tire pressure in the drive tires.
3. Inate the drive tires to 117-138 kPa (17-20 psi).
Checking the Condition of the Belts
SERVICE INTERVAL
Every 50 hours.
1. Turn off the engine, wait for all moving parts to stop,
and remove the spark plug wire(s).
2. Remove the belt cover and engine shield to check
the belt condition.
2
Specications & Maintenance
7. Wipe up any spilled oil from the engine deck
mounting surfaces.
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2-7
SPECIFICATIONS & MAINTENANCE
A
A
B
Lubricating the Broom Angle Lock Pin and Hex Shaft
SERVICE INTERVAL
Every 100 hours, Yearly.
1. Turn off the engine, wait for all moving parts to stop,
and leave the engine switch in the Off position.
2. Lubricate the broom angle lock pin tting with NGLI
grade #2 multi-purpose gun grease.
IMPORTANT
Do not get oil on the rubber wheel or the aluminum
friction drive plate as the traction drive will slip (Fig. 006).
Fig. 006
A. Aluminum Fricton Drive Plate
B. Hex Shaft
6. Move the speed selector lever to position 6.
7. Lubricate the other end of the hex shaft.
A. Broom Angle Lock Pin
3. Remove the belt cover and engine shield.
4. Move the speed selector lever to position R2.
5. Dip a long, clean, small tipped paint brush in
automotive engine oil and lightly lubricate the hex
shaft. Rock the machine forward and rearward to
rotate the hex shaft.
Fig. 005
8. Move the speed selector lever forward and rearward
a few times.
9. Install the belt cover and engine shield.
Checking the Spark Plug
SERVICE INTERVAL
Every 160 hours.
Remove the spark plug, check the condition and reset
the gap, or replace with a new plug. See your Engine
Owner’s Manual.
2-8
Walk-Behind Rotary Broom Service Manual
SPECIFICATIONS & MAINTENANCE
A
B
C
A
B
Checking the Broom Cable
SERVICE INTERVAL
After the rst 2 hours, Yearly.
1. Turn off the engine, wait for all moving parts to stop,
and remove the spark plug wire(s).
2. Remove the belt cover and engine shield.
3. With the broom lever disengaged, ensure the gap
between the broom clutch assembly and the tab is
1/8” (3.2 mm). If the broom is not properly adjusted,
see “Adjusting the Broom Drive” (page 2-11).
Checking the Broom Shaft Shear Pin
SERVICE INTERVAL
Before each use or daily.
1. Move the machine to a level surface.
2. Turn off the engine, wait for all moving parts to stop,
and remove the spark plug wire(s).
3. Check the shear pin located on the broom shaft on
either side of the gear box.
2
Specications & Maintenance
A. Broom Clutch Assembly
B. Tab
C. 1/8” (3.2 mm)
Fig. 007
Fig. 008
A. Nut
B. Shear Pin
4. If the shear pin is damaged, remove the pin and
replace with a Toro recommended pin. Secure the
pin with a nut.
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2-9
SPECIFICATIONS & MAINTENANCE
ABC
A
B
C
Checking the Broom Segments
1. Move the machine to a level surface.
2. Turn off the engine, wait for all moving parts to stop,
and remove the spark plug wire(s).
3. Raise the broom by resetting the caster positions.
4. On both sides of the unit, remove and retain the
outer bearing housing hardware.
5. Manually pull the power unit rearward to remove the
broom assembly from the unit.
6. Support the splined shaft on either side of
the gearbox.
7. Stand the broom core assembly on end so the
removable end retainer plate is facing upward.
Adjusting the Traction Cable
If the machine does not drive in the forward or reverse
speeds or it drives when you release the traction lever,
adjust the traction cable.
With the traction lever disengaged, check the pin in the
elongated slot in the left side of the machine above
the tire.
There should be a gap of 1/4” (6 mm) from the front
of the slot to the front edge of the pin (“Checking the
Traction Cable”) (page 2-6).
If the left hand traction cable is not properly adjusted, do
the following steps:
1. Loosen the jam nut.
2. Loosen or tighten the turnbuckle to adjust the pin
until it is the proper gap from the front edge of
the slot.
3. Tighten the jam nut (Fig. 010).
E
D
A. Hardware D. Support Shaft
B. End Retainer Plate E. Alignment Fingers
C. Broom Segment
8. Remove and retain the hardware from the
endretainer plate.
9. Remove the damaged broom segment(s). Install the
new segment(s) by staggering the metal ring
alignment ngers as shown in Fig. 009.
IMPORTANT
Damage may occur to the broom assembly if the broom
segments are not properly installed.
E
Fig. 009
Fig. 010
A. Jam Nut
B. Turnbuckle
10. Install the broom assembly onto the unit.
IMPORTANT
Make sure the bearing setscrews are tightened before
operating the broom.
2-10
Walk-Behind Rotary Broom Service Manual
SPECIFICATIONS & MAINTENANCE
A
B
Adjusting the Broom Drive
If the broom cable is not properly adjusted see
“Checking the Broom Cable” (page 2-9), do the
following steps:
1. Loosen the jam nut (Fig. 011).
Fig. 011
A. Jam Nut
B. Turnbuckle
2. Loosen or tighten the turnbuckle that adjusts the
tension on the cable (Fig. 011).
3. Adjust the turnbuckle until the gap between the
broom clutch assembly and the tab is 1/8” (3.2 mm)
(page 2-10).
Adjusting the Wheel Clutch Cable
1. Squeeze the lever fully, then check the gap between
the bottom of the handle and the wheel clutch
lever end.
Fig. 012
NOTE
The gap should be approximately the thickness
of a pencil (1/4” or 6 mm). If it is greater, loosen
the cable clamp nut, slide the cable jacket up slightly,
tighten the cable clamp nut, and check the gap again.
2. Repeat for the other cable.
2
2
Specications & Maintenance
Specications & Maintenance
4. Tighten the jam nut.
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2-11
SPECIFICATIONS & MAINTENANCE
Troubleshooting
IMPORTANT
It is essential that all operator safety mechanisms be connected and in proper operating condition prior to use. When a
problem occurs, do not overlook the simple causes. For example: starting problems could be caused by an empty fuel
tank.The following table lists some of the common causes of trouble. Do not attempt to service or replace major items or
any items that call for special timing of adjustments procedures (such as valves, governor, etc.).
NOTE
When disconnecting electrical connectors, do not pull on the wires to separate the connectors.
Problem Possible Cause Corrective Action
The engine will not start,
starts hard, or fails to keep
running.
The engine loses power.
The broom does not clean
the surface.
1. The fuel tank is empty.
2. The fuel shutoff valve is closed.
3. The throttle and choke are not in
the correct position.
4. There is dirt in fuel valve.
5. The fuel cap vent is blocked.
6. Dirt, water, or stale fuel is in the
fuel system.
7. The air cleaner is dirty.
8. The spark plug is faulty.
9. The spark plug wire is not
connected.
1. The engine load is excessive.
2. The air cleaner is dirty.
3. The oil level in the crankcase is
incorrect.
4. There is dirt in fuel tank lter.
5. Dirt, water, or stale fuel is in the
fuel system.
1. The broom height is incorrect.
2. The tire pressure in the drive
tires is not correct.
3. You are cleaning too much debris
at one time.
1. Fill the fuel tank.
2. Open the fuel shutoff valve.
3. Be sure the throttle control is
midway between the Slow and Fast
positions, and the choke is in the
On position for a cold engine or the
Off position for a warm engine.
4. Clean the fuel valve screen and cup.
5. Clean the fuel cap vent.
6. Clean or replace the air cleaner
element.
7. Clean, adjust or replace the spark plug.
8. Check the spark plug wire connection.
1. Reduce the ground speed or adjust
the broom.
2. Clean or replace the air cleaner
element.
3. Check the oil level in the crankcase.
4. Clean the fuel tank lter.
1. Adjust the broom height.
2. Adjust the tire pressure in the
drive tires.
3. Slow down and clear smaller areas
of debris.
The broom does not rotate.
The machine pulls left
or right.
The machine does not drive.
2-12
1. The broom is clogged.
2. The broom drive lever is not engaged.
3. The broom drive belt is slipping.
4. The belt is broken.
5. The shear pin is broken.
1. The tire pressure in the drive tires
is not correct.
1. The drive belt is worn, loose or broken.
2. The drive belt is off a pulley.
1. Unclog the broom.
2. Engage the broom drive lever.
3. Adjust or replace the belt.
4. Replace the belt.
5. Replace the shear pin.
1. Adjust the tire pressure in the
drive tires.
1. Install a new belt.
2. Replace or adjust the belt.
Walk-Behind Rotary Broom Service Manual
SPECIFICATIONS & MAINTENANCE
Problem Possible Cause Corrective Action
There is abnormal vibration.
The broom does not stop
when the drive lever is
released.
The broom wears out
prematurely.
The speed selector is
difcult to move or frozen
in place.
1. The broom assembly is loose
or damaged.
2. The engine mounting bolts are loose.
3. Engine pulley or idler pulley is loose.
4. The engine pulley is damaged.
5. The belt is damaged.
1. The broom drive belt is out of
adjustment.
1. You are using the incorrect
broom height.
1. The hex shaft needs lubrication. 1. Lubricate the hex shaft.
1. Tighten the hardware. Replace the
broom assembly.
2. Tighten the engine mounting bolts.
3. Tighten the appropriate pulley.
4. Install a new belt.
1. Check the broom drive adjustment.
1. Adjust the broom height.
2
Specications & Maintenance
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2-13
SPECIFICATIONS & MAINTENANCE
NOTES
2-14
Walk-Behind Rotary Broom Service Manual
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