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Clipper BBM307 Owner's Manual


Made by: Clipper
Type: Owner's Manual
Category: Saw
Pages: 17
Size: 1.8 MB


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Revised 9-2003


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Shown In Standard Configuration

Shown With Dust Collecting & Dust Vacuum System




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Norton warrants to the purchaser that each unit will be free from defects in 
materials or workmanship for one hundred eighty (180) days from the original
purchase date from Norton when used for commercial, institutional or 
professional use: or for thirty (30) days from the original purchase date from
Norton when used for rental purposes.

The responsibility of Norton under this warranty is limited to replacement or
repair of defective parts at a point designated by it, of such part as shall appear
to us upon inspection at such point, to have been defective in material or 
workmanship, with expense for transportation borne by the customer.

In no event shall Norton be liable for consequential or incidental damages 
arising out of the failure of any product to operate properly.

Integral units such as 

gasoline engines

electric motors






., are excluded from this warranty and are subject to the 

prime manufacturer's warranty.

This warranty is in lieu of all other warranties, expressed or implied, and all such
other warranties are hereby disclaimed.





Important: Before placing equipment in operation, record the following 

MODEL:_________ SERIAL NO.___________ 
PURCHASE FROM: _____________________ 
ADDRESS: ____________________________ 
CITY_______ STATE ______ ZIP ________ 
TELEPHONE NO. ______________________

The engine exhaust from this product  

contains chemicals known to the State of  

California to cause cancer, birth defects or 

other reproductive harm


Before using this equipment, make sure that the person using it has 
read and understands the instructions in this owner’s manual.


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Read Owners Manual Before Use

Safety Alert Symbol: Information Following This Symbol Is Very Important.


































Safety Precautions   


Specifications and Features


Items Included


Cutting  Angle Spring Lock Pin 


Dust Collection Pan 


Conveyor Cart  Assembly


Electric Motor


Electrical Safety


Carbon Brush


Air Filter


Conveyor Cart  Assembly Figure 1 


Conveyor Cart  Assembly Figure 2 


Frame and Dust Collecting Pan 


Cutting Table Guide Rails


 Cutting Table  Assembly 


 Dust  Guard  Assembly (Optional) 


Electrical System 


Carbon Brush,  Air In-take, and Blade Shaft


Cutting Head  Assembly 



Motor  Assembly


Blade Guard Assembly


Optional Dust Collecting  Assembly, Optional Stand 


Optional Dry Cutting Kit



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Use Only Norton Diamond Blades

 Safety Precautions

Important! The following safety precautions must always be observed.

Hazard Symbols

Keep all guards in place when operating any piece of equipment

Keep hands, feet, hair, and clothing away from all rotating parts

Never tamper with the governor components of settings to increase the 
maximum speed. Severe personal injury and damage to the motor or 
equipment can result if operated at speed above maximum. Always obey the 
maximum speed rating of blade.

Use Approved:

Eye Protection







Head Protection

The BBM307/YBM307 is designed as a masonry (Block, and Brick) saw and is not 
designed for non-masonry classified material.  Use steel center Diamond Blades 
Only with this machine.  

For best preformance use steel center Diamond 

Blades with a soft bond and a low diamond concentration that are specified 
for masonry products.

  The use of blades with hard bonds or high diamond 

concentration on this machine may result in damage to the motor.  Clean and 
replace the air filter as needed.  Failure not to clean or replace the air filter may 
result in motor damage. Do not use the machine without the air filter in place.


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1. Before mounting any blade on the saw, the blade should be inspected for any damage 
    which might have occurred during shipment, handling or previous use. 
2. The blade collars and arbors should be cleaned and examined for damage before 
    mounting the blade. 
3. The blade must be properly fitted over the arbor.
4. The blade shaft nut, which is a left-hand thread nut, must be tightened securely against 
    the outside blade shaft collar. 
5. The blade must be operated within the specified maximum operating speed listed on 
    the blade. 

6. The blade guard must be in place with the blade collar guard closed when the saw 
     is running. 
7. The operator should wear approved eye, hearing, respiratory, and head protection. 
8. When starting the saw, the operator should stand away and to the side of the blade. 
9. If for any reason the saw should stall in the cut, raise the blade out of the cut and switch the 
      power off.  Check outside blade shaft collar and nut for tightness. Inspect the blade for 
      damage.  Before restarting the saw. Use caution when resuming a cut. Be certain that the 
      blade is in alignment with the previous cut. 
10. During cutting operations, do not exert excess side pressure on the material as a 
      method of guiding. Do not force the blade into the cut by lowering the blade too fast 
      or by pushing the cutting table too fast.

You Are Responsible For Your Safety!!!

Machine Lifting Points: Only lift machine by the approved lifting points.

Lift Here

Lift Here


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Specifications and Features


Powerful low amperage motor 
with air filter

Ergonomically designed 
Clear View Cutting Head 
System: Provides increase 
operator efficiency, reduce 
fatigue, and provides a 
unobstructed view of the 
work area.

Front and rear handles 
for easy transport and 

Lockable heavy duty slide tray with 
steel wheels and removal backstop

Rigid all-steel unibody 
construction provides the 
best weight to strength ratio 
of any saw in its class.

Channel flow pan helps to 
direct dust away from the 

Wide open back design easily 
accommodates materials up to 
8" x 8" x 16”

Arbor cover helps contain dust and 

Pivoting head with dual springs and Posi-Loc allows 
exact blade location when cutting 4" thick, and 8" thick

BBM307/YBM307 Specifications 

Horse Power 

3 HP (2,238 kW) Peak 


115 -volts 


14 A  

Hertz (Cycles) 

60 Hz 

Motor Type  

Air Cooled Carbon Brush 

Bearing Type  

Heavy Duty Sealed 

Blade Shaft Speed  

3,600 rpm 

Maximum Blade Size 

14 in (356mm) 

Arbor Size 

1 in (25.4mm) 

Maximum Depth of Cut 

5 in (127mm) 

Straight Cut Length 

17 in (431mm) 

Maximum Material Size 

8 in x 8 in x 16 in 

(203mm x 203mm x 406 mm) 

Dimensions L x W x H 

31-1/2 in x 18-1/2 in x 30 in 

(800mm x 470mm x 762mm) 

Weight Uncrated 

75 lbs (34.1kg) Approx. 



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Items Included

The compact BBM307/YM307 Masonry saws are shipped completely assembled and ready for use
except for the diamond blade. Inspect the saw for shipping damage. If any damage is found, contact the  
shipper immediately and file a freight claim. The Norton Company is not responsible for any freight
related damages. Remove the saw from the shipping container. 

Items Included with the saw:


Part Number



Cutting Table

14” Genuine Norton Diamond Blade for Brick and Block



Call 1-800-554-8003




• Do not install the blade until it is time to use the saw!

• ANSI regulations prohibit the transportation of any saw with the blade installed!


Optional Accessories (Purchased Separately)

Extra Air Filter



Optional Accessories 

Part Number 



Dry Cutting Kit (includes: Vacuum, Hoses, and Dust Shields) 


Ground Fault Circuit Interrupt (GFI) 20A 




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The BBM307/YBM307 Block Buster Mini Masonry saw is designed with three different cutting
heights for jam cutting, a moving head for chop (or plunge cutting), and a moving cart combined
with the moving head for step cutting to help make any cutting task easier. 

Before adjusting the cutting height always disconnect the electrical power supply. 
To adjust the BBM’s fixed cutting position, pull up on the Angle Lock Pin (see Figure 1-1:
Angle Lock Pin), move the head to the new position, release the Angle Lock Pin, and rotate the
cutting head up/down until the Angle Lock Pin locks into position (lowest position for cutting thru
bricks, the middle position for cutting medium size material, and the upper position is for cutting
block.) (See figure 1-2: Angle Locking Position).

To operate the BBM Block Buster Mini as a chop or plunge saw: pull up on the Angle Lock Pin,
rotate 90 degrees, and release.  Now the cutting head can be rotated by pulling up or pushing
down on the cutting head handle. When not in use, always lock the head into one of the
three cutting height positions.

Do not install the blade until it is time to use the saw! 

This machine is  designed for the use with steel center diamond blades ONLY!

Lock the cutting head in place before transporting the BBM

ANSI regulations prohibit the transportation of any concrete saw with the blade installed!

Do not lift the saw by the cutting head.  This may result in injury or damage to the machine.

Disconnect the power supply and lockout the power switch before when moving, maintaining, or 
servicing the machine.


Figure 1-1: Angle Lock Pin 

Figure 1-2: Angle Locking Position 


Cutting Angle Spring Lock Pin

Angle Lock Pin

Head Position 


Fixed Lowest 

Jam Cutting Bricks 

Fixed Middle 

Jam Cutting Medium Size Bricks 

Fixed Upper 

Jam Cutting Block 


Chop or Plunge Cutting 

Pivoting Head with Moving Table  

Step Cutting 


Cutting Head


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Figure 2-1: Removing the Rails.

Figure 2-2: Remove the Pan

• Do not try to remove the Dust Collecting Pan without first removing the Rails.

• Removing the Dust Collecting pan without following the above assembly procedure will
  Damage the Dust Collecting Pan.

Dust Collection Pan

The Dust Collection Pan is assembled to the machine from the factory.  The following procedure  is 
to remove or to replace the Dust Collection Pan Assembly:
1. Remove Conveyor Cart (see page 11 Conveyor Cart Assembly for instructions) and then remove 
    the four (4) sets of Hardware (Bolt, Lock Washer, and Washer) from each corner of the machine
    frame and remove the rails from the frame (see Figure 2-1: Removing the Rails).  Note the
    orientation of the Hardware and the Rails.  
2. Remove the Dust Pan Assembly from the frame (see Figure 2-2: Removing the Pan).  
3. Replace the Dust Pan Assembly if required.
4. Replace the Rails (note that the leg with the mounting holes will face towards the outside of
    the frame.
5. Replace the Hardware.  Snug the operator’s left hand side and fully tighten the operators right
    hand side hardware.
6. Place the Conveyor Cart on the rails (see page 11 Conveyor Cart Assembly for instructions).
7. Align the Conveyor Cart to the blade by moving the operators left hand rail.
8. After the conveyor cart is aligned to the blade, tighten the left hand rail.


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Figure 3-1: Conveyor Cart Assembly

Figure 3-2: Conveyor Removal

Conveyor Cart Assembly


The BBM307 Conveyor Cart Assembly is specially designed with the following unique features: 

 Dust extraction.  The rear of the Conveyor Cart is designed to help extract dust out of the back of the                                 

machine when dry cutting

 Four heavy duty rolling wheels with bearings, roll smooth and provide for a long life.
 Conveyor Cart mounting bracket helps to prevent the Conveyor Cart from falling off the machine

   during use or transportation.

 Conveyor Cart locking pin, locks the cart so it will not move.

Conveyor Cart Locking Pin:
To lock the Conveyor Cart into position when transporting the machine, roll the Conveyor Cart to the 
forward most position (see Figure 3-1 Conveyor Cart Assembly).  Then push the lever down and towards 
the rail until the Conveyor Cart Locking Pin Engages.  The Conveyor Cart may need to be moved 
forwards or backwards slightly during this process.
To unlock the Conveyor Cart, reverse the above procedure.

To remove the Conveyor Cart from the machine:
1. Remove the hardware that attaches the Conveyor Cart Mounting Brackets (see Figure 3-2: Conveyor
    Cart Removal).  
2. Lift the Conveyor Cart off of the rails.




NOTE: Machine is shown with the Opitional Dust Guard


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Electric Motor


The BBM307/YBM307 Block Buster Mini Masonry Saw electrical information:

Motor Specifications:
Voltage:         115-volt
Cycles:           60Hz
Amperage:     14Amp
Horsepower:  3HP Peak
Watts:            2,238 watt

Extension Cords:
Most motor trouble is the result of too small gauge or too long of extension cord.  

Cords must be one 

piece and as short as possible.

  Cords should be no longer than shown in the following table.  The 

Norton Construction Products is not responsible for damage to motors due to the use of extension cords 
that are too small or too long.

Electrical Supply:
The Block Buster Mini Masonry Saw should be connected to 115-volt 60 Hertz electrical supply with a 
minium of a 15 amp circuit.  For best results use a 20 amp circuit.  Using the machine with the improper 
electrical supply can result in motor damage and is not covered under warranty. 

For best results use a generator that has a continuous output that is greater than 4,000 watts (4kW).  
Using the machine with a generator that is less than the recommend output can result in motor damage 
and is not be covered under warranty.

Electrical Safety

For safety and security concerns the operator should lockout the power switch when the machine is not 
in use.

Ground Fault Circuit Interrupt (GFCI)
This machine requires the use of a Ground Fault Circuit Interrupt (GFCI) device.

Do not modify the plug as provided- if it will not fit the outlet, have the proper outlet installed by a 
qualified electrician.

Improper connection of the equipment-grounding can result in a risk of electric shock.  The conductor 
with insulation having an outer surface that is green with or without yellow stripes is the equipment-
grounding conductor.  If repair or replacement if the electric cord or plug is necessary, do not connect the 
equipment-grounding conductor to a live terminal.  Check with a qualified electrician or service personal 
if the grounding instructions are not completely understood, of in doubt as to whether the tool is properly 
grounded.  Use only 3-wire extension cords that have 3-prong grounding plugs and 3-pole receptacles 
that accept the tool’s plug.  Repair or replace damaged or worn cord immediately.

Wire Gauge

Extension Cord Chart

Maximum Length

14 AWG
10 AWG

 25’ (7.6 m)

  50’ (15.2 m)


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Electrical Safety


This tool is intended for use on a circuit that has an outlet that looks like the one shown below:

Grounding Instructions:
In the event of a malfunction or breakdown, grounding provides a path of least resistance for electric 
current to reduce the risk of electric shock.  This tool is equipped with an electric cord having an 
equipment-grounding conductor and a grounding plug.  The plug must be plugged into a matching outlet 
that is properly installed and grounded in accordance with all local codes and ordinances.

1.  KEEP GUARDS IN PLACE and in working order

2.  REMOVE ADJUSTING KEYS AND WRENCHES.  Form habit of checking to see that keys and 
adjusting wrenches are removed from tool before turning it on.

3.  KEEP WORKING AREA CLEAN.  Cluttered areas and benches invite accidents.

4.  DON’T USE IN DANGEROUS ENVIRONMENTS.  Don’t use power tools in damp or wet locations, or 
expose them to rain.  Keep work area well lighted.

5.   KEEP CHILDREN AWAY.  All visitors should be kept a safe distance from the work area.

6. MAKE THE WORKSHOP CHILD PROOF with padlocks, master switches, or by removing starter keys

7.  DON’T FORCE THE TOOL.  It will do the job better and safer at the rate for which it was designed.

8.  USE THE RIGHT TOOL.  Don’t force the tool or attachment to do a job for which it was not designed.

9.  USE THE PROPER EXTENSION CORD.  Make sure your extension cord is in good condition.  When 
using an extension cord, be sure to use one heavy enough to carry the current your product will draw.  
An undersized cord will cause a drop in line voltage resulting in loss of power and over heating.  The 
table on page 12 shows the correct size to use depending on the cord length and ampere rating.  If in 
doubt, use the next heavier gage.  The smaller the gage number, the heavier the cord.

10. WEAR PROPER APPAREL.  Do not wear loose clothing, gloves, neckties, rings, bracelets, or other 
jewelry which may get caught in moving parts.  Nonslip footwear is recommended.  Wear protective hair 
covering to containing long hair.

11. ALWAYS USE SAFETY GLASSES.  Also use face or dust mask if cutting operation is dusty.  
Everyday eyeglasses only have impact resistant lenses, they are not safety glasses.


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Electrical Safety


12. SECURE WORK.  Use clamps or vise to hold work when practical.  It’s safer than using your hand 
and it frees both hands to operate tool.

13. DON’T OVERREACH.  Keep proper footing and balance at all times.

14. MAINTAIN TOOLS WITH CARE.  Keep tools sharp and clean for best and safest performance.  
Follow instructions for lubricating and changing accessories.

15. DISCONNECT TOOLS before servicing; when changing accessories, such as blades, bits, cutters, 
and the like.

16.REDUCE THE RISK OF UNINTENTIONAL STARTING.  Make sure switch is in off position before 
plugging in.

17. USE RECOMMENDED ACCESSORIES.  Consult the owner’s manual for recommended 
accessories.  The use improper accessories may cause risk of injury to persons.

18. NEVER STAND ON TOOL.  Serious injury could occur if the tool is tipped or if the cutting tool is 
unintentionally contacted.

19. CHECK DAMAGED PARTS.  Before further use of the tool, a guard or  other part that is damaged 
should be carefully checked to determine that it will operate properly and perform its intended function - 
check for alignment of moving parts, binding of moving parts, breakage of parts, mounting, and any other 
conditions that may affect its operation.  A guard or other part that is damaged should be properly 
repaired or replaced.

20. DIRECTION OF FEED.  Feed work into a blade or cutter against the direction of rotation of the blade 
or cutter only.

comes to a complete stop.

Additional Electrical Safety:
Disconnect tool from the power supply while the motor is being mounted, connected, or reconnected.


The BBM Block Buster Mini 

Masonry saw is equipped with special designed switch cover that turns the power off when closed and 
can be locked in the off position.  The locking of the switch and disconnection the power supply will 
isolate the machine during maintenance, service, and when the machine is unattended. 

To lockout the power switch:
1. Turn the machine off and close the switch cover.
2. Disconnect the power supply
3. Attach a small pad lock (key type) as shown in the photo to the left.
4. Lock and remove the key from the padlock.
5. Tag the machine as per local, OSHA, and your companies 

Lockout/Tagout refers to the complete isolation of equipment during maintenance or service work. OSHA 
regulations 29 CFR 1910.147 and 1926.416 require the use of locks or tags as warning devices to 
ensure personnel are not injured from accidental machine start-ups.   


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Electrical Safety


Position of Saw:

1.  To avoid the possibility of the receptacle getting wet, position the saw on one side of a wall   mounted 
receptacle to prevent water from dripping onto the receptacle or plug.  The user should arrange a “Drip 
Loop” in the cord connecting the saw to a receptacle.  The “Drip Loop” is that part of the cord below the 
level of the receptacle, or the connector if an extension cord is used, to prevent water traveling along the 
cord and coming in contact with the receptacle. 

2.  If the plug or receptacle does get wet, DON’T unplug the cord.  Disconnect the fuse or circuit breaker 
that supplies power to the tool.  Then unplug and examine the plug  for the presence of water in the 

Extension Cords:
1. Use only outdoor rated extension cords.  These extension cords are identified by a marking 
“Acceptable for use with outdoor appliances; store indoor while not used.”  Use only extension cords 
having an electrical rating not less than the rating of the product, see page 12 for extension cord 
specifications .  Do not use damaged extension cords.  Examine extension cord before using and 
replace if damaged.  Do not abuse extension cords and do not jerk on any cord to disconnect.  Keep 
cord away from heat and sharp edges.  Always disconnect the extension cord from the receptacle before 
disconnecting the saw from the extension cord.

2. WARNING: To reduce the risk of electrocution, keep all connections dry and off the ground.  Do not 
touch the plug with wet hands.

3. Ground Fault Interrupter (GFCI) protection should be provided in the circuit(s) or outlet(s) to be used 
for the saw.  Receptacles are available that have built in GFCI protection and may be used for additional  
measures of safety.


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Carbon Brush


The BBM307/YBM307 Block Buster Mini Masonry Saw uses a high horsepower low amperage air over 
brush motor. 

Replace the brushes when the motor begins to lose power.  Brushes typically need to be replaced
During the life of the saw.
Replace the brushes when over 2/3 of their original length is used (when the over all length of the brush 
is less than 7/16” (11.1mm).  It is normal for the brushes to wear down.

Brush Replacement:
1.  Disconnect the electrical supply
2.  Remove the Air Filter.
3.  Remove the four (4) Motor Air In-Take Cover mounting screws (see Figure 4-1: Motor Air In-Take
     Cover Removal).
4.  Remove the Motor Air In-Take from the motor.
5.  Use a coin or wide blade screw driver to remove the Carbon Brush Cap.  Use care not to damage the
     Carbon Brush Cap.  Inspect the Cap for damage.  If the Cap has any signs of damage replace (see
     Figure 4-2 Carbon Brush Removal)
6.  Remove the Carbon Brush.
7.  Use compressed air to blow any access carbon build up out of the motor.
8.  Inspect the inside of the motor by looking into the brush holder for any excessive wear or carbon
     Build up.
9.  Place the new Carbon Brush into the Carbon Brush Holder.
10. Replace the Carbon Brush Cap and tighten the Cap with a coin or wide blade screw driver.  Only
      snug the Cap down.  Over tightening the Cap can cause damage to the Cap.
11. Reinstall  the Motor Air In-Take Cover and re-attach the four mounting screws.  Do not over tighten.
12. Clean the Air Filter.
13. Reinstall the Air Filter.

Figure 4-1: Motor Air In-Take Removal

Figure 4-2: Carbon Brush Removal

Cutting Head

Brush Cap

Carbon Brush

Motor Air In-Take Cover

Brush Cap

Carbon Brush


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Air Filter


The BBM307/YBM307 Block Buster Mini Masonry Saw is equipped with a specially designed air filter to 
help protect the motor from damage due to dust intake.  

For Best Performance:

Clean Air Filter Before Each Use   
Inspect Air Filter and Replace Filter if Damaged
Do Not Use the Machine with a Dirty, Damaged, or Missing Air Filter
Reinstall the Filter Before Use

To clean the Air Filter:
1. Carefully remove the Air Filter from the Motor Air In-Take Cover opening.  Do not tear or damage the
    Filter (see Figure 5-1: Air Filter Location).
2. Clean the air filter by patting, and shaking the dust from the filter.  Compressed air can be used to
    blow the dust out of the filter.
3. Inspect the filter for damage.  Any damaged Air Filter must be replaced before using the machine.
4. Replace the filter into the Motor Air In-Take Cover.  
5. Check to see if the Air Filter is installed properly.  The Air Filter should fill the opening in the front of the
     Air In-Take Cover and should completely fill the filter cavity.

To replace the Air Filter:
1. Carefully remove the old  Air Filter from the Motor Air In-Take Cover opening.  NOTE: Pull the Air Filter
    thru the opening in the front of the Motor Air In-Take Cover.
2. Inspect the new Air Filter for damage.
3. Place the new Air Filter into the Motor Air In-Take Cover.
4. The Air Filter should fill the opening in the front of the Air In-Take Cover and should completely fill the
     filter cavity.

Using the machine with a dirty, damaged, or missing Air Filter will result in motor damage and is not 
covered under warranty.


Air Filter 

Figure 5-1: Air Filter Location