National Flooring Equipment 6280 COMMANDER User manual

Read Manual Before Servicing Machine
402963 Rev J
6280 COMMANDER®WALK-BEHIND SCRAPER
SERVICE MANUAL

Table of Contents
3
Table of Contents .......................................................................................................................................................... 3
Specicatons ................................................................................................................................................................. 4
Safety.............................................................................................................................................................................. 5
General Rules for Safe Operation ......................................................................................................................... 5
Walk-Behind Scraper Safety Guidelines................................................................................................................ 6
Hydraulic Safety..................................................................................................................................................... 7
Electrical Practices ................................................................................................................................................ 8
Troubleshooting Guide ............................................................................................................................................... 10
Maintenance..................................................................................................................................................................11
Wheel Cleaner Adjustment ...................................................................................................................................11
Wheel Removal ....................................................................................................................................................11
Adding or Changing Hydraulic Fluid .....................................................................................................................11
Inspection of Internal Parts ...................................................................................................................................11
Tank Removal ...................................................................................................................................................... 12
Power Cord.......................................................................................................................................................... 12
Isolators ............................................................................................................................................................... 12
Cutting Head Bearing .......................................................................................................................................... 12
Maintenance Schedule ........................................................................................................................................ 13
Parts List and Diagrams ............................................................................................................................................. 14
Overall Machine................................................................................................................................................... 14
Base Assembly .................................................................................................................................................... 15
Body..................................................................................................................................................................... 16
Weights................................................................................................................................................................ 17
Tank ..................................................................................................................................................................... 18
Cutting Head........................................................................................................................................................ 19
Motor Assembly ................................................................................................................................................... 20
Motor Parts .......................................................................................................................................................... 21
Pump ................................................................................................................................................................... 22
Hydraulic Motor Assembly ................................................................................................................................... 23
Eccentric, Chain and Belt .................................................................................................................................... 24
Idler Assembly ..................................................................................................................................................... 25
Bottom and Back Covers ..................................................................................................................................... 26
Wheels................................................................................................................................................................. 27
Front Wheel Assembly......................................................................................................................................... 28
Handle Assembly ................................................................................................................................................. 29
Front Cover ................................................................................................................................................... 30
Lower Sub-Assembly .................................................................................................................................... 32
Hydraulic Hoses ............................................................................................................................................ 33
Lever ............................................................................................................................................................. 34
Adjustment Rod............................................................................................................................................. 35
Speed Control Knob...................................................................................................................................... 36
Labels .................................................................................................................................................................. 37
Wiring Diagrams .................................................................................................................................................. 38
Hydraulics ............................................................................................................................................................ 41
Warranty ....................................................................................................................................................................... 42
402963_RevJ

Specications
4402963_RevJ
Machine Variants
Region Serial Number Input Power Amps
(Full Load) RPM Speed Body Panels
Domestic
(North America)
6280-10XXXX 120V / 60 Hz 13A 3450 0-45 ft/min Silver Vein
6280-12XXXX 120V / 60 Hz 13A 3450 0-45 ft/min Green
6280-23XXXX 120V / 60 Hz 13A 3450 0-45 ft/min Silver Vein
International
6280-11XXXX 230V / 50 Hz 8A 2850 0-20 m/min Silver Vein
6280-13XXXX 230V / 50 Hz 8A 2850 0-20 m/min Silver Vein
6280-20XXXX 110V / 50 Hz 13A 2850 0-11 m/min Silver Vein
Product Specications
Width Length Height Weight
(Machine Only) Weight* Motor Power
Vibration
X Axis Y Axis Z Axis
17.8” (45 cm)
51” (130 cm)
(max. length)
29” (74 cm)
(handle folded)
46” (117 cm)
(max. height)
30” (76 cm)
(handle folded)
335 lbs
(152.0 kg)
425 lbs
(192.8 kg)
1.5 HP
(1.1 kW)
3.2
m/s2
6.3
m/s2
4.8
m/s2
*Includes removable weights.

Safety
Environment
Avoid use in dangerous environments.
Do not use in rain, damp or wet locations, or in the presence of
explosive atmospheres (gaseous fumes, dust, or ammable mate-
rials). Remove materials or debris that may be ignited by sparks.
Keep work area tidy and well-lit - a cluttered or dark work area may
lead to accidents. Extreme heat or cold may affect performance.
Protect others in the work area and be aware of surroundings.
Provide barriers or shields as needed to protect others from debris
and machine operation. Children and other bystanders should be
kept at a safe distance from the work area to avoid distracting the
operator and/or coming into contact with the machine. Operator
should be aware of who is around them and their proximity. Sup-
port personnel should never stand next to, in front of, or behind
the machine while the machine is running. Operator should look
behind them before backing up.
Do not come within 3 ft. of the machine’s perimeter during
operation.
Guard against electric shock.
Ensure that machine is connected to a properly grounded outlet.
Prevent bodily contact with grounded surfaces, e.g. pipes, radia-
tors, ranges, and refrigerators. When scoring or making cuts,
always check the work area for hidden wires or pipes.
5
GENERAL RULES FOR SAFE OPERATION
Before use, anyone operating or performing maintenance on this equipment must read and understand this manual, as well as any labels pack-
aged with or attached to the machine and its components. Read the manual carefully to learn equipment applications and limitations, as well
as potential hazards associated with this type of equipment. Keep manual near machine at all times. If your manual is lost or damaged, contact
National Flooring Equipment (NFE) for a replacement.
Personal
Dress properly and use safety gear.
Do not wear loose clothing; it may be caught in moving parts.
Anyone in the work area must wear safety goggles or glasses and
hearing protection. Wear a dust mask for dusty operations. Hard
hats, face shields, safety shoes, etc. should be worn when speci-
ed or necessary.
Maintain control; stay alert.
Keep proper footing and balance, and maintain a rm grip. Ob-
serve surroundings at all times. Do not use when tired, distracted,
or under the inuence of drugs, alcohol, or any medication that
may cause decreased control.
Keep hands away from all moving parts and tooling.
Wear gloves when changing tooling. Remove tooling when ma-
chine is not in use and/or lower cutting head to the oor.
Do not force equipment.
Equipment will perform best at the rate for which it was designed.
Excessive force only causes operator fatigue, increased wear, and
reduced control.
Equipment
Use proper parts and accessories.
Only use NFE-approved or recommended parts and accessories.
Using any that are not recommended may be hazardous.
Ensure accessories are properly installed and maintained.
Do not permanently remove a guard or other safety device when
installing an accessory or attachment.
Inspect for damaged parts.
Check for misalignment, binding of moving parts, loose fasteners,
improper mounting, broken parts, and any other conditions that
may affect operation. If abnormal noise or vibration occurs, turn
the machine off immediately. Do not use damaged equipment until
repaired. Do not use if power switch does not turn machine on and
off. For all repairs, insist on only identical NFE replacement parts.
Maintain equipment and labels.
Keep handles dry, clean, and free from oil and grease. Keep cut-
ting edges sharp and clean. Follow instructions for lubricating and
changing accessories. Motor and switches should be completely
enclosed at all times with no exposed wiring. Inspect cord regu-
larly. Labels carry important information; if unreadable or missing,
contact NFE for a free replacement.
Avoid accidental starting; store idle equipment.
When not in use, ensure that the machine is unplugged; do not
turn on before plugging in. Store in a dry, secured place. Remove
tooling when storing, and keep away from children.
Maintenance & Repairs
Begin maintenance work only when the machine is shut
down, unplugged, and cooled down.
Use proper cleaning agents.
Ensure that all cleaning rags are ber-free; do not use any aggres-
sive cleaning products.
Schedule regular maintenance check-ups.
Ensure machine is properly cleaned and serviced. Remove all
traces of oil, combustible fuel, or cleaning uids from the machine
and its connections and ttings. Retighten all loose ttings found
during maintenance and repair work. Loose or damaged parts
should be replaced immediately; use only NFE parts.
Do not weld or ame-cut on the machine during repairs, or
make changes to machine without authorization from NFE.
402963_RevJ

WALK-BEHIND SCRAPER SAFETY GUIDELINES
Before use, anyone operating this equipment must read and understand these safety instructions.
6
WARNING: GRINDING/CUTTING/DRILLING OF MASONRY, CONCRETE, METAL AND OTHER MATERIALS CAN GENERATE DUST,
MISTS AND FUMES CONTAINING CHEMICALS KNOWN TO CAUSE SERIOUS FATAL INJURY OR ILLNESS, SUCH AS RESPIRATORY
DISEASE, CANCER, BIRTH DEFECTS OR OTHER REPRODUCTIVE HARM. IF YOU ARE UNFAMILIAR WITH THE RISKS ASSOCIATED
WITH THE PARTICULAR MATERIAL BEING CUT, REVIEW THE MATERIAL SAFETY DATA SHEET AND/OR CONSULT YOU EMPLOYER,
THE MATERIAL MANUFACTURER/SUPPLIER, GOVERNMENTAL AGENCIES SUCH AS OSHA AND NIOSH AND OTHER
AUTHORITIES ON HAZARDOUS MATERIALS. CALIFORNIA AND SOME OTHER AUTHORITIES, FOR INSTANCE, HAVE
PUBLISHED LISTS OF SUBSTANCES KNOWN TO CAUSE CANCER, REPRODUCTIVE TOXICITY, OR OTHER HARMFUL
EFFECTS. CONTROL DUST, MIST AND FUMES AT THE SOURCE WHERE POSSIBLE. IN THIS REGARD USE GOOD
WORK PRACTICES AND FOLLOW THE RECOMMENDATIONS OF THE MANUFACTURER/SUPPLIER, OSHA/NIOSH,
AND OCCUPATIONAL AND TRADE ASSOCIATIONS. WHEN THE HAZARDS FROM INHALATION OF DUST, MISTS AND
FUMES CANNOT BE ELIMINATED, THE OPERATOR AND ANY BYSTANDERS SHOULD ALWAYS WEAR A RESPIRATOR
APPROVED BY OSHA/MSHA FOR THE MATERIAL BEING CUT.
Scraping
Beware of hidden obtrusions.
Watch out for hidden dangers and protrusions in ooring. Do not
use on largely uneven surfaces.
Observe location of electrical supplies and extension cords.
Do not allow cutting heads to come into contact with any electrical
supply or extension cord.
Use correct tooling and accessories.
Provide barriers or shields as needed to protect others from debris.
After mounting tooling, check for proper alignment.
Use for correct applications.
Do not force equipment to do heavier duty work than it was made
for.
Safety
402963_RevJ

Safety
7
HYDRAULIC SAFETY
Maintaining a Safe Work Environment
Establishing a safe work environment in and around your hydraulic equipment is extremely important. The easiest and most effective way to
avoid problems is to make sure associates understand their equipment, know how to operate the machines safely, and recognize the dangers if
handled carelessly. A few things to be aware of are:
• Pressure: Hydraulic uid under pressure is dangerous and can cause serious injury. Never look for a leak when unit is under pressure.
Using your hand could cause serious injury. A few common ways to encounter hydraulic uid under pressure include:
▪ Pinhole: Fluid under pressure can cause serious injury. It can be almost invisible escaping from a pinhole, and it can pierce the skin
into the body.
▪ Leak: Keep ttings and hoses tight. Only check and service when not under pressure. Leaking hydraulic uid is hazardous; in addition
to making workplace oors slippery and dangerous, it also contaminates the environment. Before cleaning an oil spill, always check
EPA, state, and local regulations.
▪ Burst: Whether due to improper selection or damage, a ruptured hose can cause injury. If it bursts, a worker can be burned, cut,
injected, or may slip and fall.
▪ Coupling Blow-Off: If the assembly is not properly made or installed, the coupling could come off and hit or spray a worker, possibly
resulting in serious injury. Never operate machine without guards.
• Flammability: When ignited, some hydraulic uids can cause res and/or explode.With the exception of those comprised primarily of
water, all hydraulic uid is ammable (including many “re-resistant” hydraulic uids) when exposed to the proper conditions. Leaking pres-
surized hydraulic uids may develop a mist or ne spray that can ash or explode upon contact with a source of ignition. These explosions
can be very severe and could result in serious injury or death. Precautions should be taken to eliminate all ignition sources from contact
with escaping uids, sprays or mists resulting from hydraulic failures. Sources of ignition could be electrical discharges (sparks), open
ames, extremely high temperatures, sparks caused by metal -to -metal contact, etc.
• Mechanical: Hydraulic uid creates movement, which means some equipment may move. Observe surroundings and equipment at all
times.
• Moisture: Do not use in wet or high moisture conditions.
• Electrical: Faulty wiring can be an electrical hazard. A regular preventive maintenance program should always include a wiring check. If
applicable, disconnect battery before serving.
• Temperature: Because this machine operates at a relatively low pressure, overheating is not common. If surface of tank becomes too hot
to touch by hand (above 130ºF or 55°C), shut off machine and allow it to cool.
Hydraulic Fluid
Only use Texaco Rando 46 Hydraulic Oil or compatible uid like ISO or AW #46 from a brand name manufacturer. Non-compatible uids could
cause damage to unit or serious injury.
CAUTION: NEVER USE YOUR HANDS TO CHECK FOR LEAKS OVER HOSE OR HYDRAULIC CONNECTIONS. USE A PIECE OF CARD-
BOARD TO LOCATE A PRESSURIZED LEAK. FOR LOW PRESSURE LEAKS (DRIPS), USE A RAG TO CLEAN THE AREA AND DETERMINE
WHERE THE LEAK ORIGINATES.
DANGER: DO NOT TOUCH A PRESSURIZED HYDRAULIC HOSE ASSEMBLY WITH ANY PART OF THE BODY. IF FLUID PUNCTURES
THE SKIN, EVEN IF NO PAIN IS FELT, A SERIOUS EMERGENCY EXISTS. OBTAIN MEDICAL ASSISTANCE IMMEDIATELY. FAILURE TO DO
SO COULD RESULT IN LOSS OF THE INJURED BODY PART OR DEATH.
402963_RevJ

Safety
8
ELECTRICAL PRACTICES
Extension Cord Requirements
• Ensure the cord type is suitable for the application and location. If you are unsure about your cord type, consult a qualied electrical profes-
sional or electrician.
• FULLY INSERT plug into outlet.
• Do not use excessive force to make connections.
• Never unplug by pulling the cord from the outlet. Pull plug rather than cord to reduce the risk of damage.
• Regularly examine your extension cord and ensure it is in good electrical condition. Never use a damaged cord—either replace it or have
it repaired by a qualied person.
• Protect your extension cords from sharp objects, excessive heat and damp or wet areas. Keep the cord away from oil, cutting edges and
moving parts.
• Do not drive, drag or place objects over cord.
• Avoid overheating. Uncoil cord and do not cover it with any material.
• Avoid accidental starting. Be sure equipment is turned off before plugging in. Do not use equipment if the power switch does not turn the
equipment on and off.
• Make sure equipment is not running before disconnecting cord.
• Unplug equipment. When not in use and before changing accessories or performing maintenance, unplug the machine.
Extension Cord Selection
All cords should be sized appropriately to reduce the risk of damage, re or reduced performance. Reference the table in this section for cord
sizes.
WARNING: ELECTRICAL CORDS CAN BE HAZARDOUS. MISUSE CAN RESULT IN FIRE OR DEATH BY ELECTRICAL SHOCK. READ
CAREFULLY AND FOLLOW ALL DIRECTIONS.
WARNING: GROUND YOUR EQUIPMENT. THE EQUIPMENT MUST BE PLUGGED INTO AN APPROPRIATE OUTLET, ONE WHICH
IS PROPERLY INSTALLED AND GROUNDED IN ACCORDANCE WITH ALL CODES AND ORDINANCES. DO NOT MODIFY THE PLUG
PROVIDED WITH THE EQUIPMENT. NEVER REMOVE THE GROUNDING PRONG FROM THE PLUG.
CAUTION: ALWAYS FOLLOW APPLICABLE ELECTRICAL CODES, STANDARDS AND/OR REGULATIONS. CONSULT YOUR LOCAL
ELECTRICAL AUTHORITY OR A LICENSED ELECTRICIAN BEFORE ATTEMPTING TO MODIFY AN ELECTRICAL INSTALLATION. ENSURE
THAT CIRCUIT AND GROUND FAULT PROTECTION DEVICES AND ALL OTHER ELECTRICAL SAFETY EQUIPMENT ARE FUNCTIONING
PROPERLY.
WARNING: DO NOT REMOVE, BEND OR MODIFY ANY METAL PRONGS OR PINS OF THE PLUG. MODIFICATIONS TO POWER CORDS
AND/OR PLUGS MAY RESULT IN INJURY AND/OR EQUIPMENT DAMAGE.
402963_RevJ

How to Use This Table
1. Determine your supply voltage.
2. Determine the total length of your cord including all extension cords.
3. Determine the maximum amp draw for your machine.
4. Trace your voltage across the top of the table to the rst length that is greater than or equal to your cord length.
5. Follow the column down to the rst row that contains a maximum amp draw greater than or equal to yours.
6. This cell contains the minimum wire size for your application.
Example
Application: Max Amps = 11A, Length = 40ft, Voltage = 120V 1ph
Solution: 40ft is between the 25ft and 50ft columns, so the larger of the two col-
umns is chosen. Likewise, 11A is between the 10A and 12A rows, so the larger
of the two rows is chosen. 14 AWG (2.5mm2) is the minimum wire size for this
example.
Extension Cord Sizes
Safety
9
ELECTRICAL PRACTICES (CONT’D)
Single Phase Equipment
Max
Length
120V Supply 25ft (7.5m) 50ft (15m) 75ft (25m) 100ft (30m) 150ft (45m) 200ft (60m)
230V Supply 50ft (15m) 100ft (30m) 150ft (45m) 200ft (60m) 300ft (90m) 400ft (120m)
Max Amps Minimum Wire Size
816 AWG (1.5mm2)16 AWG (1.5mm2)16 AWG (1.5mm2)16 AWG (1.5mm2)14 AWG (2.5mm2)14 AWG (2.5mm2)
10 16 AWG (1.5mm2)16 AWG (1.5mm2)16 AWG (1.5mm2)16 AWG (1.5mm2)14 AWG (2.5mm2)12 AWG (4mm2)
12 14 AWG (2.5mm2)14 AWG (2.5mm2)14 AWG (2.5mm2)14 AWG (2.5mm2)12 AWG (4mm2)12 AWG (4mm2)
14 14 AWG (2.5mm2)14 AWG (2.5mm2)14 AWG (2.5mm2)14 AWG (2.5mm2)12 AWG (4mm2)10 AWG (6mm2)
16 14 AWG (2.5mm2)14 AWG (2.5mm2)14 AWG (2.5mm2)14 AWG (2.5mm2)12 AWG (4mm2)10 AWG (6mm2)
18 14 AWG (2.5mm2)14 AWG (2.5mm2)14 AWG (2.5mm2)12 AWG (4mm2)12 AWG (4mm2)10 AWG (6mm2)
20 12 AWG (4mm2)12 AWG (4mm2)12 AWG (4mm2)12 AWG (4mm2)10 AWG (6mm2)10 AWG (6mm2)
25 12 AWG (4mm2)12 AWG (4mm2)12 AWG (4mm2)12 AWG (4mm2)10 AWG (6mm2)8 AWG (10mm2)
30 10 AWG (6mm2)10 AWG (6mm2)10 AWG (6mm2)10 AWG (6mm2)8 AWG (10mm2)8 AWG (10mm2)
Note: The table is based on a <10% voltage loss, data from the U.S. National Electrical Code Tables 400.5(A) & 400.5(B) and typical resis-
tances for copper wire.
402963_RevJ

Troubleshooting Guide
Problem Cause Solution
Machine will not start. Insufcient power. Ensure use of properly rated extension cord.
Loose capacitor leads. Check capacitor leads to ensure good connection.
Overload button on motor has been tripped. Button is located on the bottom of the electric box on
motor. If tripped, hold button in until it clicks.
Faulty ON/OFF switch. Replace if needed.
Machine will not move under power. Speed control is set too slow. Turn speed control knob counterclockwise until the
machine goes forward.
Wheels are not in the “engage mode”. Install wheel pins for “engage mode”.
Broken belt. Remove wheels and bottom cover to inspect. Replace
if needed.
Broken chain. Remove wheels and bottom cover to inspect; repair or
replace if needed.
Control handle mechanism failure. Inspect control mechanism; repair or replace as
needed.
Motor is humming, but machine does not run
or breakers are blown.
Failed isolators. Remove wheels and bottom cover to inspect.
Failed capacitors. Replace as needed.
Motor start switch connections are dirty. Remove fan cover and fan. Clean the motor start
switch (set of points) with an emery board or cloth
between the points; reassemble.
Machine is leaking hydraulic uid. Leak in hose(s). Tighten; replace if needed.
Hydraulic ttings are loose. Tighten; replace if needed.
Motor is heating up. Motor shaft is binding. Remove wheels and cover to inspect isolators. Inspect
cutting head bearing and eccentric to ensure that they
are not binding. If issue continues, contact NFE for
additional support.
10 402963_RevJ

Maintenance
11
WHEEL CLEANER ADJUSTMENT
1. Loosen wheel cleaner with 9/16” wrench (Figure 1).
2. Slide cleaner up to the face of the wheel until it touches, but does not dig into the
wheel surface.
3. Re-tighten rmly. Note: Too much interference between the wheel and cleaner will
damage wheel.
WHEEL REMOVAL
1. Turn off and unplug machine.
2. Examine back of wheels for built-up debris.
3. Remove yarn build-up.
4. Place block under machine between wheels.
5. Disengage and remove axle pin (Figure 2).
6. Remove wheel-securing screw with a 3/16” or 5mm hex wrench (Figure 2).
7. Remove wheel-securing cap. Wheel will slide off.
8. Remove wheel spacer. This should be inspected at regular intervals.
9. Relubricate bearing inside wheel before reassembly.
ADDING OR CHANGING HYDRAULIC FLUID
• Change or add uid when needed; check uid level if there has been a leak, dam-
aged or ruptured hose, or a loose tting. Fluid should be level with bottom of tank
plug hole (Figure 3).
• To add uid, unscrew ller port cap from top of machine (Figure 4); add uid
through a lter or funnel with a screen to keep uid clean.
• To change uid, remove ller port cap. Remove drain plug from side of machine
(Figure 4). A 2 gallon (8 liter) container will be needed to drain the uid into. (Fluid
will not be removed from hoses.) Regardless of the machine’s straining system,
add uid through a lter or funnel with a screen to keep uid clean.
INSPECTION OF INTERNAL PARTS
Visual inspection of internal parts can be done without draining the tank.
1. Remove two lifting bail eyebolts and the two bolts from the back of the tank.
2. Carefully lift tank 3-4’’ (8-10 cm).
3. Using a ashlight, inspect the drive chain, hoses, front seal on hydraulic motor, and
suction and pressure line on pump.
4. If service is necessary, follow the procedure for tank removal.
FIG. 1
FIG. 3
FIG. 4
WARNING: ALWAYS UNPLUG MACHINE BEFORE PERFORMING MAINTE-
NANCE.
Wheel
Cleaner
Tank
Plug Hole
Filler Port
Cap
Drain
Plug
Note: Figures 1-4 are shown without sliding side
weights for clarity.
FIG. 2
Axle Pin
Wheel
Securing
Screw
402963_RevJ

Maintenance
TANK REMOVAL
It is necessary to remove the tank in order to repair the pump, or to replace or service internal hoses.
1. Drain tank by removing the top ller port cap and drain plug on the side of the machine (Figure 4). A two gallon container will be needed
to drain the uid into.
2. Replace drain plug and ller port cap.
3. Remove two lifting bail eyebolts and the two bolts from the back of the tank.
4. Disconnect return line on the back of the tank; carefully lift tank 3-4’’ (8-10 cm) and disconnect suction line. The tank can now be removed.
POWER CORD
If the power cord is damaged, it must be replaced by NFE or a qualied professional.
ISOLATORS
Inspection
1. Perform the wheel removal procedure to access the bottom cover.
2. Remove one wheel at a time; remove the bottom cover bolt behind each wheel.
3. Carefully remove the bottom cover to expose the underside.
4. Inspect the isolators from the side for damage or wear.
Replacement
1. Remove the side slide weights, side weights, and front weight.
2. Loosen the seven socket head cap screws holding the isolators in place. Grip each isolator with locking pliers to aid in loosening.
3. Remove and replace each isolator. It is recommended adding red threadlocker to the threads of the cap screws when reinstalling.
CUTTING HEAD BEARING
Inspection
1. Perform the wheel removal procedure to access the bottom cover.
2. Remove one wheel at a time; remove the bottom cover bolt behind each wheel.
3. Carefully remove the bottom cover to expose the underside.
4. Inspect the cutting head bearing for damage or wear.
Replacement
1. Remove the bottom cover.
2. Remove the cutting head bearing from the cutting head by removing the four bolts that hold down the bearing.
3. Replace the cutting head bearing and re-tighten the four bolts.
4. Place the bottom cover and re-tighten the eight bolts that hold the bottom cover in place.
12 402963_RevJ

Maintenance
13
Maintenance To Be Performed Interval
Daily 50 hrs 1000 hrs 2000 hrs
Inspect fasteners, wheels and blade holders for damage. ●
Clean built-up glue and debris from wheels, front weight, and blade holder. ●
Visually inspect internal parts. ●
Inspect safety devices and switches (power cord, wheel cleaners, switches). ●
Inspect and replace isolators. ●
Inspect and replace cutting head bearing. ●
Change hydraulic uid. ●
402963_RevJ

Parts List and Diagrams
14
ECCENTRIC, CHAIN AND
PUMP PARTS
BELT PARTS
TANK PARTS
MOTOR PARTS
BOTTOM & BACK COVERS
CUTTING HEAD
BODY PARTS
3
WHEEL PARTS
62
5
4
PARTS
1
WEIGHT PARTS
ITEM
NO. PART NUMBER DESCRIPTION QTY.
1 401577 Assembly, Commander Handle, 115V 1
2 401546 Motor, Hydraulic, Sub, 6280 1
3 6280-299 Wheel Assembly, Front 1
4 6280-401B Wrench, Allen, 7/32 1
5 6280S-BASEASSY Subassembly, Base, 6280, 7 Isolators 1
6 73222 Bolt, Flange 3/8-16 x 1 3
OVERALL MACHINE (DOMESTIC SHOWN)
ITEM
NO.
6280-10XXXX
6280-12XXXX
6280-23XXXX
6280-11XXXX 6280-13XXXX 6280-20XXXX DESCRIPTION QTY.
1
401577 Assembly, Commander Handle, 115V 1
404581-011 Assembly, Commander Handle, EUR 1
404581-013 Assembly, Commander Handle, AUS 1
404581-020 Assembly, Commander Handle, UK 1
2401546 401546 401546 401546 Motor, Hydraulic, Sub, 6280 1
36280-299 6280-299 6280-299 6280-299 Wheel Assembly, Front 1
46280-401B Wrench, Allen, 7/32 1
5280-137W 5280-137W 5280-137W Wrench, Blade, 6mm 1
56280S-BASEASSY Subassembly, Base, 6280, 7 Isolators 1
401639 401639 401639 Subassembly, Base, 6280, Metric 1
673222 Screw, Hex Head Cap, Flange, 3/8-16 x 1 3
74650 74650 74650 Bolt, Wizlock, M10-1.5 x 25mm, Class 8.8 3
402963_RevJ

Parts List and Diagrams
15
6
13
4
2
5
17
7
15
5
10*
8
16
3
12
14
11
1*
9
ITEM
NO.
6280-10XXXX
6280-12XXXX
6280-23XXXX
6280-11XXXX
6280-13XXXX
6280-15XXXX
6280-20XXXX
6280-26XXXX
6280-28XXXX
6280-33XXXX
DESCRIPTION
QTY.
1 401541 401541 Sprocket, Axle, Heavy Duty 1
2
73012 73012 Screw, Set, 1/4-20 x 3/8 2
3
401627 401627 Pump Drive Assembly, Splined 1
4
6280-103-1 6280-103-1M Shaft, Axle 1
5
6280-103A 6280-103A Ring, Retaining, Ext, Axial, 1" 3
6
6280-105L 6280-105LM Support, Axle Bearing, Left 1
7
6280-105R 6280-105RM Support, Axle Bearing, Right 1
8
6280-145 6280-145 Cover, Front 1
9
6280HD-107 401526 Plate, Base, 6280HD 110
70810 70810 Isolator, Vibration 7
11
71115 71115 Bearing, 1x2x1/2 3
12
71132 71132 Bearing, 1-1/4 1
13
73033 73033 Key, 1/4 x 1/4 x 1" 1
14
73217 73217 Screw, Socket Head Cap, Low, 3/8-16 x 3/4 7
15
73310 73310 Screw, Socket Head Cap, Grade 5 5/16-18x7/8 4
16
73332 Bolt, Hex Head Cap 5/16-18x5/8 2
74631 Bolt, Hex Flange Bolt M6-16 2
ITEM
NO.
6280-10XXXX
6280-12XXXX
6280-23XXXX
6280-11XXXX
6280-13XXXX
6280-20XXXX
DESCRIPTION QTY.
1* 401541 401541 Sprocket, Axle, Heavy Duty 1
273012 73012 Screw, Set, Cup Point, 1/4-20x3/8 2
3401627 401627 Pump Drive Assembly, Splined 1
46280-103-1 6280-103-1M Shaft, Axle 1
56280-103A 6280-103A Ring, Retaining, Axial, 1” 3
66280-105L 6280-105LM Support, Axle Bearing, Left 1
76280-105R 6280-105RM Support, Axle Bearing, Right 1
86280-145 6280-145 Cover, Front 1
9405950 405950 Isolator, Vibration, 2 x 1-5/8, M/F, Neoprene 7
10* 404591 Assembly, Plate, Base With Bearings, 6280HD 1
404592 Assembly, Plate, Base With Bearings, Metric, 6280 1
11 71115 71115 Bearing, 1x2x1/2 1
12 71132 71132 Bearing, 1-1/4 1
13 73033 73033 Key, 1/4x1/4x1 1
14 73217 73217 Screw, Socket Head Cap, Low, 3/8-16x3/4 7
15 73310 73310 Screw, Socket Head Cap, 5/16-18x7/8, Black Oxide 4
16 73332 Screw, Hex Head Cap, 5/16-18x5/8 2
74631 Bolt, Wizlock, M6-1.0 x 16, Plain 2
17 71115 71115 Bearing, 1x2x1/2 2
*Item 1 includes Item 2. Item 10 includes Items 11 and 12.
402963_RevJ
BASE ASSEMBLY
6280S-BASEASSY (DOMESTIC)
401639 (INTERNATIONAL)

Parts List and Diagrams
16 402963_RevJ
1
5
4
6
3
87
2
9
ITEM
NO.
6280-10XXXX
6280-12XXXX
6280-23XXXX
6280-11XXXX
6280-13XXXX
6280-15XXXX
6280-20XXXX
6280-26XXXX
6280-28XXXX
6280-33XXXX
DESCRIPTION QTY.
1 6280-156L 6280-156L Body, Main, Upper, Left 1
2 6280-156R 6280-156R Body, Main, Upper, Right 1
3 6280-165 6280-165 Cleaner, Wheel 2
4 73204 73204 Washer, Lock, 3/8 4
5 73201 73201 Screw, Hex Head Cap, 3/8-16 x 1 4
6 73264 73264 Washer, Flat, Zinc USS 3/8 4
773311 Screw, Socket Head Cap, 5/16-18 x 1 4
401848 Screw, Socket Head Cap, M8-1.25 x 25
8 73303 73303 Washer, Split Lock 5/16 4
9 74763 74763 Grommet, Rubber 1/2" 1
BODY
ITEM
NO.
6280-10XXXX
6280-12XXXX
6280-23XXXX
6280-11XXXX
6280-13XXXX
6280-20XXXX
DESCRIPTION QTY.
16280-156L 6280-156L Body, Main, Upper, Left 1
26280-156R 6280-156R Body, Main, Upper, Right 1
36280-165 6280-165 Cleaner, Wheel 2
473204 73204 Washer, Lock, 3/8 4
573201 73201 Screw, Hex Head Cap, 3/8-16 x 1 4
673264 73264 Washer, Flat, Zinc USS 3/8 4
773311 Screw, Socket Head Cap, 5/16-18 x 1 4
401848 Screw, Socket Head Cap, M8-1.25 x 25 4
873303 73303 Washer, Split Lock 5/16 4
974763 74763 Grommet, Rubber 1/2” 1

Parts List and Diagrams
17
WEIGHTS
ITEM
NO.
6280-10XXXX
6280-23XXXX 6280-12XXXX
6280-11XXXX
6280-13XXXX
6280-20XXXX
6280-26XXXX
6280-28XXXX
6280-33XXXX
6280-15XXXX DESCRIPTION QTY.
1400269 400269 Bolt, Hex Head, 3/8-16 x 3-3/4 2
400184 400184 Bolt, M10-1.5 x 90, HHCS
273204 73204 Washer, Lock, 3/8 2
74657 74657 Washer, Lock, M10
373263 Washer, Flat SAE Zinc 3/8 2
74655 74655 Washer, Flat, M10
4
74852-SV
74852-G
74852-SV
74852-O
Weight, Front, Green
Weight, Front, Orange
Weight, Front, Silver Vein
1
5 74853-BLK 74853-BLK 74853-BLK 74853-BLK Side weight 2
6
74851-SV
74851-G
74851-SV
74851-O
Weight, Slide, Green
Weight, Slide, Orange
Weight, Slide, Silver Vein
2
7 405980 405980 405980 405980 Spacer, Side Weight, Commander 1
8 406618 406618 406618 406618 Screw, Hex Head Cap, 1/2-13 x 4-1/4,
Grade 5, Clear Zinc 2
9 406619 406619 406619 406619 Screw, Socket Head Cap, 1/2-13 x 3-1/4,
Black Oxide 4
10 73403 73403 73403 73403 Washer, Split lock 1/2 6
11 73424 73424 73424 73424 Washer, Flat, Zinc SAE 1/2 6
765
2
4
3
1
11 10 9
11 10 8
402963_RevJ
ITEM
NO.
6280-10XXXX
6280-23XXXX 6280-12XXXX
6280-11XXXX
6280-13XXXX
6280-20XXXX
DESCRIPTION QTY.
1400269 400269 Bolt, Hex Head, 3/8-16 x 3-3/4 2
400184 Bolt, M10-1.5 x 90, HHCS 2
273204 73204 Washer, Lock, 3/8 2
74657 Washer, Lock, M10 2
373263 73263 Washer, Flat SAE Zinc 3/8 2
74655 Washer, Flat, M10 2
474852-G Weight, Front, Green 1
74852-SV 74852-SV Weight, Front, Silver Vein 1
574853-BLK 74853-BLK 74853-BLK Side weight 2
674851-G Weight, Slide, Green 2
74851-SV 74851-SV Weight, Slide, Silver Vein 2
7405980 405980 405980 Spacer, Side Weight, Commander 2
8406618 406618 406618 Screw, Hex Head Cap, 1/2-13 x 4-1/4, Grade 5, Clear Zinc 2
9406619 406619 406619 Screw, Socket Head Cap, 1/2-13 x 3-1/4, Black Oxide 4
10 73403 73403 73403 Washer, Split lock 1/2 6
11 73424 73424 73424 Washer, Flat, Zinc SAE 1/2 6

Parts List and Diagrams
18
ITEM
NO.
6280-10XXXX
6280-11XXXX
6280-13XXXX
6280-20XXXX
6280-23XXXX
6280-26XXXX
6280-28XXXX
6280-33XXXX
6280-12XXXX 6280-15XXXX DESCRIPTION QTY.
1
6280-162-SV
6280-162-G
6280-162-O
Tank, Hydraulic, Weldment, Green
Tank, Hydraulic, Weldment, Orange
Tank, Hydraulic, Weldment, Silver Vein
1
2 6280-161B 6280-161B 6280-161B Plug, Vent, Filler Cap 1
3 6280-161D 6280-161D 6280-161D Plug, Filler Port 1
4 6280-162G 6280-162G 6280-162G Magnet, Tank 1
5 6280-214 6280-214 6280-214 Plug, Tank 2
6 70601 70601 70601 Strainer, Tank Mounted 1
7 72816 72816 72816 Adapter, Hydraulic, 90 deg, -6M ORFS, -
6M ORB 1
8 73222 73222 73222 Bolt, Flange 3/8-16 x 1 2
9 403882 403882 403882 Eye Bolt, 1.50 ID, 3/8-16 x 8 2
10 401452 401452 401452 Washer, Flat, 1/2", SAE 6
8
1
2
3
9
10
6
5
7
54
10
TANK
402963_RevJ
ITEM
NO.
6280-10XXXX
6280-11XXXX
6280-13XXXX
6280-20XXXX
6280-23XXXX
6280-12XXXX DESCRIPTION QTY.
16280-162-SV Tank, Hydraulic, Weldment, Silver Vein 1
6280-162-G Tank, Hydraulic, Weldment, Green 1
26280-161B 6280-161B Plug, Vent, Filler Cap 1
3 6280-161D 6280-161D Plug, Filler Port 1
4 6280-162G 6280-162G Magnet, Tank 1
5 6280-214 6280-214 Plug, Tank 2
6 70601 70601 Strainer, Tank Mounted 1
7 72816 72816 Adapter, Hydraulic, 90 deg, -6M ORFS, -6M ORB 1
8 73222 73222 Bolt, Flange 3/8-16 x 1 2
9 403882 403882 Eye Bolt, 1.50 ID, 3/8-16 x 8 2
10 401452 401452 Washer, Flat, 1/2”, SAE 6

Parts List and Diagrams
19
CUTTING HEAD
10
1
2
3
5
7
6
4
8
9
10
ITEM NO.
6280-10XXXX
6280-12XXXX
6280-23XXXX
6280-13XXXX
6280-15XXXX
6280-11XXXX
6280-20XXXX
6280-26XXXX
6280-28XXXX
6280-33XXXX
.YTQNOITPIRCSED
11ytuDyvaeH,gnittuC,daeH033-0826
1cirteM,gnittuC,daeH836104
27321173211Nut, Flange, Serrated, 3/8-16 7
37114171141Bearing, 1-7/16" ID 16SC4FB Dodge Housing Assy 1
47342373423Washer, Interior/Exterior Lock 1/2" 4
41x02-2/1daeHxeH,tloB81437814375
673242 Screw, Button Head Cap with Flange 3/8-16 x 1 5
74649 Screw, Button Head Cap With Flange M10-25 5
1edalB,revoC631-0826631-08267
8402893402893Spacer, Stop, Cutting Head 2
9404167404167Stop, Washer, Thrust, Walk Behind 2
10 404574404574Bearing, Flange, Plain, 7/8 x 1 x 5/16 2
11 7326673266Bolt, Socket Head Cap 3/8-16x1 4
402963_RevJ
ITEM
NO.
6280-10XXXX
6280-12XXXX
6280-23XXXX
6280-11XXXX
6280-13XXXX
6280-20XXXX
DESCRIPTION QTY.
16280-330 Head, Cutting, Heavy Duty 1
401638 Head, Cutting, Metric 1
273211 73211 Nut, Flange, Serrated, 3/8-16 7
371141 71141 Bearing, 1-7/16” ID 16SC4FB Dodge Housing Assy 1
473423 73423 Washer, Interior/Exterior Lock 1/2” 4
573418 73418 Bolt, Hex Head 1/2-20x1 4
673242 Screw, Button Head Cap with Flange 3/8-16 x 1 5
74649 Screw, Button Head Cap With Flange M10-25 5
76280-136 6280-136 Cover, Blade 1
8402893 402893 Spacer, Stop, Cutting Head 2
9404167 404167 Stop, Washer, Thrust, Walk Behind 2
10 73266 73266 Bolt, Socket Head Cap 3/8-16x1 4

Parts List and Diagrams
20
ITEM NO.
6280-10XXXX
6280-12XXXX
6280-23XXXX
6280-11XXXX
6280-13XXXX
6280-15XXXX
6280-20XXXX
6280-26XXXX
6280-28XXXX
6280-33XXXX
DESCRIPTION QTY.
1 73502 73502 Strain Relief, Straight 1/2 in 1
2 74730 74730 Grommet, Rubber 5/8" 1
372365 Motor, 1-1/2 HP, 115/230 VAC, 60 Hz, 3450
RPM 1
72367W Motor, 230V, 1.5 HP, 116943
4 73401 Locknut, Conduit, 1/2" 1
5 6280-179 6280-179 Ring, Motor Spacer 1
6 73204 73204 Washer, Lock, 3/8 4
7 73201 73201 Screw, Hex Head Cap, 3/8-16 x 1 4
8* 72810 72810 Caps, Splice 3
9* 72811 72811 Caps, Insulator, Splice 3
10* 72821 72821 Terminal, Ring, 16-14 Gauge, Nylon, 10 Stud 1
*NOT SHOWN
2
4
1
5
6
7
3
MOTOR ASSEMBLY
402963_RevJ
ITEM
NO.
6280-10XXXX
6280-12XXXX
6280-23XXXX
6280-11XXXX
6280-13XXXX
6280-20XXXX
DESCRIPTION QTY.
173502 73502 Strain Relief, Straight 1/2 in 1
274730 74730 Grommet, Rubber 5/8” 1
372365 Motor, 1-1/2 HP, 115/230 VAC, 60 Hz, 3450 RPM 1
72367W Motor, 230V, 1.5 HP, 116943 1
473401 73401 Locknut, Conduit, 1/2” 1
56280-179 6280-179 Ring, Motor Spacer 1
673204 73204 Washer, Lock, 3/8 4
773201 73201 Screw, Hex Head Cap, 3/8-16 x 1 4
8* 72810 72810 Caps, Splice 3
9* 72811 72811 Caps, Insulator, Splice 3
10* 72821 72821 Terminal, Ring, 16-14 Gauge, Nylon, 10 Stud 1
11* 72554 Cord Assembly, Motor, 120 Volt 1
72554-W Cord Assembly, Motor, 220 Volt 1
*Not shown