Norton Blockbuster BBL727 User manual

OWNERS MANUAL
Blockbuster®Large Masonry Saw
Models:
BBL547 BBL527 BBL727
BBL5247 BBL7247
BBL1347 BBL1327 BBL13247
Form BBL527-1327 Manual Rev 5/2021
Go to Discount-Equipment.com to order your parts

Discount-Equipment.com is your online resource for quality parts & equipment.
Florida: 561-964-4949 Outside Florida TOLL FREE: 877-690-3101
Need parts?
Click on this link: http://www.discount-equipment.com/category/5443-parts/ and
choose one of the options to help get the right parts and equipment you are looking
for. Please have the machine model and serial number available in order to help us
get you the correct parts. If you don’t find the part on the website or on once of the
online manuals, please fill out the request form and one of our experienced staff
members will get back to you with a quote for the right part that your machine needs.
We sell worldwide for the brands: Genie, Terex, JLG, MultiQuip, Mikasa, Essick, Whiteman,
Mayco, Toro Stone, Diamond Products, Generac Magnum, Airman, Haulotte, Barreto,
Power Blanket, Nifty Lift, Atlas Copco, Chicago Pneumatic, Allmand, Miller Curber, Skyjack,
Lull, Skytrak, Tsurumi, Husquvarna Target, , Stow, Wacker, Sakai, Mi-T- M, Sullair, Basic,
Dynapac, MBW, Weber, Bartell, Bennar Newman, Haulotte, Ditch Runner, Menegotti,
Morrison, Contec, Buddy, Crown, Edco, Wyco, Bomag, Laymor, Barreto, EZ Trench, Bil-
Jax, F.S. Curtis, Gehl Pavers, Heli, Honda, ICS/PowerGrit, IHI, Partner, Imer, Clipper, MMD,
Koshin, Rice, CH&E, General Equipment, ,AMida, Coleman, NAC, Gradall, Square Shooter,
Kent, Stanley, Tamco, Toku, Hatz, Kohler, Robin, Wisconsin, Northrock, Oztec, Toker TK,
Rol-Air, Small Line, Wanco, Yanmar

2
WARRANTY
Saint-Gobain Abrasives, Inc. (Norton Clipper) Products warrants all
products manufactured by it against defects in workmanship or
materials for a period of one (1) year from the date of shipment to the
customer.
The responsibility of Saint-Gobain Abrasives, Inc. under this warranty
is limited to replacement or repair of defective parts at Saint-Gobain
Abrasives, Inc. Stephenville, Texas factory, or 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 Saint-Gobain Abrasives, Inc. 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,batteries,
tires, transmissions, etc., 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
information.
MODEL: _________ SERIAL NO.: ___________
PURCHASE FROM: _____________________
ADDRESS: ____________________________
CITY: _______ STATE: ______ ZIP: ________
TELEPHONE NO. ______________________
Before using this equipment, make sure that person using it
Read and understand the instructions in this owner’s manual.
Go to Discount-Equipment.com to order your parts

3
Table of Contents
Section Page
I. Preparation 4-16
A. Safety Precautions 4
Dust and Silica Warning 4
B. Assembly 6
C. Assembly Conveyor Cart & Guide a Cut 6-7
D. BBL Series Masonry Saw Specifications 8
E. Electrical Connections 9-10
F. Wiring Diagram 10-14
BBL527, BBL547, BBL5247 5HP 230v/60/1 11
BBL527 3PHASE, BBL547 3PHASE, BBL5247 3PHASE, 5HP 230-460/60/3 W/Switch
BBL727 3PHASE, BBL7247 3PHASE 7.5HP 230-460/60/3 12
BBL727 575V 3PHASE 7.5HP 575v/60/3 13
BBL527 600v 3PHASE 5HP 600/60/3 14
G. Electric Motor Trouble Shooting 15
H. Gasoline Engine 15-16
II. Operation 17-21
A. How To Mount The Blade 17
B. “Step Cutting” With Abrasive Blades 17-18
C. “Jam Cutting” And “Step Cutting With Diamond Blades 18-19
D. Dry Cutting 19
E. Wet Cutting 19-20
III. Maintenance 20-23
A. V-Belts 20-21
B. Electric Motor 20
C. Gasoline Engine 21-22
D. Blade Shaft Bearings 23
E. Water Pump 22-23
IV. Parts List 24-34
A. Ordering Information 24
B. Electric Motor And Gasoline Engine Service Information 24
C. Frame And Water Pump All BBL Models 25-26
D. Cutting Head Gasoline Models 27-29
E. Cutting Head Electric Models 30-31
F. Electric Motor 32
G. Cutting Table All BBL Models 33
H. Guide-A-Cut Assembly All BBL Models 34
Read And Understand Owner’s Manual
Before Use
Safety Alert Symbol: Information Following This Symbol Is Very
Important.
Use Only Genuine Norton Diamond Blades
Go to Discount-Equipment.com to order your parts

4
I. PREPARATION
A. Safety Precautions
Important! The following safety precautions must always be observed.
Hazard Symbols
Fuel (gasoline) is extremely flammable and its vapors can explode if
ignited. Store gasoline only in approved containers, in well-ventilated,
unoccupied approved areas, and away from sparks or flames. Do not
fill the fuel tank while the engine is hot or running. Do not start the
engine near spilled fuel.
Never use the fuel as a cleaning agent
Engine components can get extremely hot from operation. To prevent
burns, do not touch the engine or related parts while the engine is
running or immediately after it is turned off. Never operate the engine
with any heat shields or guards removed.
Keep all guards in place when operating any piece of equipment
Keep hands, feet, hair, and clothing away from all rotating parts
Lethal Exhaust Gas use only in well ventilated areas. Engine exhaust
gases contain poisonous carbon monoxide, which is odorless,
colorless, and can cause death if inhaled. Avoid inhaling exhaust
fumes, and never run the engine in a closed building or confined area
Never tamper with the governor components of settings to increase the
maximum speed. Severe personal injury and damage to the engine or
equipment can result if operated at speed above maximum. Always
obey the maximum speed rating of blade.
DO NOT LIFT THE SAW BY THE HANDLE OR
GUARDS!!!
Go to Discount-Equipment.com to order your parts

5
Dust and Silica Warning
Grinding/cutting/drilling of masonry, concrete, metal and other materials can generate
dust, mists and fumes containing chemicals known to cause serious or 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 process and/or material
being cut or the composition of the tool being used, review the material safety data
sheet and/or consult your employer, the material manufacturer/supplier, governmental
agencies such as OSHA and NIOSH and other sources on hazardous materials and
make certain to comply with all product warnings and instructions for the safe and
effective use of the material being cut. 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. Water should be used for
dust suppression when wet cutting is feasible. When the hazards from inhalation of
dust, mists and fumes cannot be eliminated through engineering controls such as
either vacuum and/or water mist, the operator and any bystanders should always wear
a respirator approved by NIOSH/MSHA for the material being cut.
California Proposition 65 Message
Some dust created by power sanding, sawing, grinding, drilling, and other construction
activities contain chemicals known (to the State of California) to cause cancer, birth
defects or other reproductive harm. Some examples of these chemicals are:
• Lead, from lead-based paints
• Crystalline silica, from bricks and cement and other masonry products
• Arsenic and chromium, from chemically treated lumber
For Addition Information Consult The Following Sources:
http://www.osha.gov/dsg/topics/silicacrystalline/index.html
http://www.cdc.gov/niosh/consilic.html
http://oehha.ca.gov/prop65/law/P65law72003.html
http://www.dir.ca.gov/Title8/sub4.html
Use Approved:
Eye Protection Hearing
Protection
Respiratory
Protection
Head Protection
Go to Discount-Equipment.com to order your parts

6
I. PREPARATION
B. Assembly
1. Remove machine from skid.
2. Remove the conveyor cart and guide-a-cut from the carton and place on the
pan.
3. Remove the drain plug from carton and place in drain opening in bottom of
pan.
4. Check the owner’s manual for wiring connection and proper electrical
connections before starting saw.
C. Assembly Conveyor Cart & Guide-a-Cut
The Blockbuster® Masonry saws are shipped completely assembled and
ready for use except for diamond blade, gasoline, and oil. Inspect the saw for
shipping damage. If any damage is found, contact the shipper immediately
and file a freight claim. Norton Construction Products is not
responsible for any freight-related damages. Remove the saw from
the pallet.
Items Included with the saw:
UPC Part No Item QTY Notes
00310007390 83777 Conveyor Cart Assembly 1
00310007501 83892 Guide-A-Cut Assembly 1
00310004632 75128 Splash Guard Assembly 1
00310004053 70807 Wrench 19 mm 1
00310004199 72143 Wrench 22mm 1
00310004237 72305 Water Pump Assembly 1 Gasoline Powered Machines
Only
70184668392 214169 Pump Water Electric 1 Electric Powered Machines
Only
70184650470 9602010 Fit Barb Hose 1/4FPTX1/2 1 Electric Powered Machines
Only
-NA- Form BBL527-1327
Manual Rev 7-2015 Owner’s Manual 1 Form BBL527-1327 Manual Rev 7-2015
-NA- See Customer
Service Diamond Bade 1 General Propose Same Diameter as Blade Size
Do not install the blade until it is time to use the saw!
ANSI regulations prohibit the transportation of any concrete saw with
the blade installed!
Go to Discount-Equipment.com to order your parts

7
Conveyor Cart Assembly:
Remove the Conveyor Cart and Back Stop from the Saws Water Pan, and the
Wing Nuts, Carriage Bolts, Washers, and Cart Stop from the plastic bag. Slide
one (1) Carriage Bolt thru each of the three (3) Square Holes located on the
front of the Conveyor Cart. Slide the Back Stop Over each of the Carriage
Bolts. Slide the Stop Assembly over the Carriage Bolt Located on the Left front
of the Conveyor Cart NOTE: The Rubber Stop will faces away from the
Conveyor Cart. Attach one (1) Washer and one (1) Wing Nut to each Carriage
Bolt and Tighten. See Figure 1: Back Stop Assembly. Place the Conveyor
Cart on the Machine.
Figure 1: Back Stop Assembly
Guide-A-Cut Assembly:
Attach the Guide-A-Cut to the Conveyor Cart by adjusting the Wing Bolt until
the Guide-A-Cut can slide over the Black Stop. The Guide-A-Cut will work as a
Rip Guide that is adjustable for 90and 45cuts. See Figure 2: Guide-A-Cut
Assembly.
Figure 2: Guide-A-Cut Assembly
Splash Assembly:
Remove the Splash Guard from the Saw Water Pan. Attach the Splash Guard
Spring Clips to the Pivoting Bar Located Under the Cutting Head. Note that the
rough side of the Splash Guard should face towards the front of the saw. The
Splash Guard material is made is designed for easy to cleaning. To clean,
simply rinse the Splash Guard with water until clean. The Splash Guard should
be used when wet cutting to reduce the amount of debris thrown from the blade
and cutting surface. When dry cutting the Splash Guard can be removed to
allow the dust particles to drift away from the Saw Operator.
Go to Discount-Equipment.com to order your parts

8
I. PREPARATION
D. BBL Series Masonry Saw Specifications
Dimensions/Weight
Length 41” (1041mm)
Width 26” (660mm)
Height (Electric) 54” (1372mm)
Height (Gas) 57” (1448mm)
Weight (Electric) Uncrated 440lbs (970kg)
Weight (Gas) Uncrated 460lbs (1014kg)
Electric Motor
Motor Mfg. Baldor
Motor Type TEFC, Thermal Protection
Motor RPM 3,450 RPM
Single Phase:
BBL527
BBL547
BBL5247
5 HP - 230v 60 Hz single Phase (Standard)
Run Amperage: 20.6 Amp @ 230v
Three Phase 5 Horse Power
BBL527 3PHASE
BBL547 3PHASE
BBL5247 3PHASE
5 HP - 230-460v 60Hz three Phase (Optional)
Three Phase 7-1/2 Horse Power
BBL727 3PHASE
BBL7247 3PHASE
7-1/2 HP 230-460v 60Hz three Phase
Run Amperage: 8.4 Amp @ 230v/4.2 Amp @ 480v
Three Phase 7-1/2 Horse Power 575v
BBL727 575v 3PHASE
7-1/2 HP 575v 60Hz three Phase (Optional)
Thee Phase 5 Horse Power 600v
BBL527 600v 3PHASE
5 HP - 600v 60 Hz single Phase (Optional)
Engine (Gasoline Models Only)
Engine Mfg. Honda
Spec No. GX390K1QXC9
Model GX390
Engine Type Single Cylinder 4 Cycle
Horse Power 13 hp (9.5kW) @ 3,600 rpm
Max Torque 19.5 ft-lbs (26.5 Nm, 2.7 kg-m) @ 2,500 rpm
Cooling System Air
Oil Capacity 1.1 liter (1.16 US qt)
Fuel Capacity 6.5 liter (1.79 US gal)
Fuel Type Unleaded Gasoline (86 pump octane)
Low Oil Sensor Yes
Air Filtration Four Stage Cyclone
Characteristics
Max Blade 20” (508 mm) or 14” (356 mm)
Depth of Cut 24” (610 mm) 10” (254 mm)
20” (508 mm) 8” (203 mm)
14” (356 mm) 5” (127 mm)
Arbor Bore 1” (25.4 mm)
Blade Shaft Locking Device Machined Into Flats Of Tight Collar
Blade Shaft Speed 24” 1,460 rpm
20” 2,400 rpm
14” 2,400 rpm
Depth Control Hand Feed With Return Spring
Depth Lock Standard
Number Of V-Belts 2
Blade Guard Type All Steel Construction
Stay Level Blade Guard Yes
Fork Lift Brackets Built In
Water Pump (Gasoline Models) Mechanically Belt Driven
Water Pump (Electric Models) Electrical 115v/60Hz
Go to Discount-Equipment.com to order your parts

9
I. PREPARATION
E. Electrical Connections
Important Before connecting the motor leads to the power supply, be sure that
the voltage, cycles and phase shown on the nameplate of the motor correspond to
the available power supply. Both the 5 HP and 7-1/2 HP. motors have overload
protectors and are equipped with a reset button on the motor housing. If, after
proper electrical connections are made, the motor will not run, press the reset
button to the overload protector switch. The optional 575v and 600v Three (3)
Phase motors do not have a thermal over load protector.
Failure to run the motor on the proper voltage will damage the motor and is not
covered under warranty. Improperly wired motors are not covered under warranty.
Voltage Selection for Three (3) Phase Motors 5 and 7-1/2 HP 230-480v:
Wherever possible, use 480v power supply for best operation. To change
voltage, disconnect the power form the machine, remove the terminal box cover
from the top of the motor, and change the connections as shown in the wiring
diagrams on page 12 or the chart below.
Line A Line B Line C Join Join Join Join Join Join
High (480v) 1 2 3 4,7 5,8 6,9 10 11 12
Low (230v) 1,7 2,8 3,9 10,4 11,5 12,6 – – –
Power Connections
Connect the power supply to the pigtail leads of the switch. Direct wiring
connection is preferred, but an extension cord with an electrical plug with 30 amp
minimum capacity may be used. Connecting wires should be as short as possible
and in one piece. In no case should the connecting wires be longer than shown in
the following table:
Model HP Volts Phase 50’ (15m) 100’ (30.4m) 150’ (45.7m)
BBL527
BBL547
BBL5247
5 HP 230v 1 12 AWG 12 AWG 10 AWG
BBL527 3PHASE
BBL547 3PHASE
BBL5247 3PHASE
5 HP 230-480v 3 12 AWG 12 AWG 10 AWG
BBL727 3PHASE
BBL7247 3PHASE
7.5 HP 230-480v 3 12 AWG 12 AWG 10 AWG
BBL727 575v 3PHASE 7.5 HP 575v 3 12 AWG 12 AWG 10 AWG
BBL527 600v 3PHASE 5 HP 600v 3 12 AWG 12 AWG 10 AWG
Caution-When wires that are too small gauge or too long are used, loss of power,
over heating, or possible damage to the motor will result.
Always use the proper wiring connectors that are UL/CSA approved to attach the motor to
the electrical supply. Any wiring hook ups should be made by qualified personnel and made
to National Electrical Code and to any Local Codes.
Go to Discount-Equipment.com to order your parts

10
Generators:
If a generator must be used, it must be the minimum size listed below or greater.
The generator must have a 30A circuit and capable of providing a minimum of
wattage at the required voltage. Under size generators will cause motor damage
and is not covered under warranty.
Motor HP Minimum Generator Size
5 HP 230v 17.6 Kw
5 HP 230-460v 3 Phase 15.2 Kw
7-1/2 HP 230-460v 3 Phase 22.6 Kw
5 HP 600v 3 Phase 15.2 Kw
7-1/2 HP 575v 3 Phase 22.6 Kw
I. PREPARATION
F. Wiring Diagram
Model Part# UPC# Description HPVolts Hz PH Baldor
Specification
Baldor
Drawing
BBL527
BBL547
BBL5247
232088 00510003898 MOT 5.0HP 230v/60/1 W/Switch 5 230v 60 1 36J656Y959 CD1122
BBL527 3PHASE
BBL547 3PHASE
BBL5247 3PHASE
232099 70184683437 MOT 5HP 230-460/60/3 W/Switch 5
230-
460v 60 3 36H968W189G1 CD1597
BBL727 3PHASE
BBL7247 3PHASE
232100 70184683438 MOT 7.5HP 230-460/60/3
W/Switch
7.5230-
460v
60 3 36K167T227 CD1597
BBL727 575v
3PHASE
232157 70184627209 MOT 7.5HP 575/60/3 W/Switch 7.5 575v 60 3 36N332S715 CD0003A02
BBL527 600v
3PHASE 232154
70184626967 MOT 5HP 600/60/3 W/Switch
No Thermal Overload Protector
5 600v 60 3
36H968T894
CD0383A02
Before attempting any electrical work always verify the voltage, phase, and Baldor
Motor Specification from the Motor Name Plate with the Chart Shown Above. Any
failure due to misapplication of voltages and or Phase is not covered under any
warranty.
For any Electric Motor service, warranty, or technical related questions contact your nearest
Baldor service center:
Go to Discount-Equipment.com to order your parts

11
Wiring Diagram 5HP 230v/60 hz/1 Phase
Model Motor
Part#
Motor UPC# Description HP Volts Hz PH Baldor
Specification
Baldor
Drawing
BBL527
BBL547
BBL5247
232088 00510003898 MOT 5.0HP 230v/60/1 W/Switch 5 230v 60 1 36J656Y959 CD1122
Go to Discount-Equipment.com to order your parts

12
Wiring Diagram 5HP & 7-1/2 HP 230-460v/60Hz/3 Phase
Model Motor
Part#
Motor UPC# Description HP Volts Hz PH Baldor
Specification
Baldor
Drawing
BBL527 3PHASE
BBL547 3PHASE
BBL5247 3PHASE
232099 70184683437 MOT 5HP 230-460/60/3 W/Switch 5
230-
460v 60 3 36H968W189G1 CD1597
BBL727 3PHASE
BBL7247 3PHASE
232100 70184683438
MOT 7.5HP 230-460/60/3 W/Switch
7.5 230-
460v
60 3 36K167T227 CD1597
NOTE: High Voltage = 460v, Low Voltage =230v. Unit normally ship configured for low voltage (230v).
Go to Discount-Equipment.com to order your parts

13
Wiring Diagram 7-1/2 HP 575v/60Hz/3 Phase
Model Motor
Part#
Motor UPC# Description HP Volts Hz PH Baldor
Specification
Baldor
Drawing
BBL727 575V
3PHASE
232157 70184627209 MOT 7.5HP 575v/60/3 W/Switch 7.5 575v 60 3 36K167T227 CD1597
Go to Discount-Equipment.com to order your parts

14
Wiring Diagram 5 HP 600v/60Hz/3 Phase
Model Motor
Part#
Motor UPC# Description HP Volts Hz PH Baldor
Specification
Baldor
Drawing
BBL527 600v
3PHASE
23215 70184626967 MOT 5HP 600/60/3 W/Switch
No Thermal Overload Protector
5 600v 60 3
36H968T894
CD0383A02
Go to Discount-Equipment.com to order your parts

15
G. Electrical Motor Trouble Shooting:
Circuit Breaker During Start Up or Not Cutting:
Verify that the power supply voltage matches the motor name plate
voltage
Failure to run the motor on the proper voltage will damage
the motor and is not covered under warranty. Improperly
wired motors are not covered under warranty.
Verify that the circuit breaker is at least 30 amps
Verify that the Extension Cord meets the requirements on See:
Power Connections page 9
Have a qualified Electrician verify that the Electrical Connections are
correctly made.
If using a generator verify that it meets the minimum requirements
See: Generators on page 9
Circuit Breaker Trips while cutting: - This is an issue with the Blade or Cutting
Method being used.
Verify that the Blade Being used is correct for the material being cut
Verify that the Blade is properly exposed
Verify that the Blade is installed properly
Verify the cutting method. Forcing the Blade into the material is a
sign that either the Blade is NOT correct for the material being cut or
an inexperienced operator. Let the Blade and Machine work for you
do not work for the Blade and Machine.
Overload Protector (Thermal) Trips – This is a sign of Low Voltage, Incorrect
Blade for Material being cut, or forcing the Blade through the material.
Verify Voltage at the machine!
Verify that the Extension Cord meets the requirements on See:
Power Connections page 9
Verify the cutting method. Forcing the Blade into the material is a
sign that either the Blade is NOT correct for the material being cut or
an inexperienced operator. Let the Blade and Machine work for you
do not work for the Blade and Machine.
Clean Motor by blowing out the fan cover with compressed air
Check the Motor for a damaged fan
G. Gasoline Engine
Prior to attempting to operate the engine, read the information contained in
the engine owner's manual. An engine owner’s manual is supplied with
every gasoline powered concrete saw.
1. Check Oil: Add oil if low. Refer to the engine owner's manual for the
recommended SAE viscosity grades. Capacity of oil is 1.1 liters (1.16 US qt)
Go to Discount-Equipment.com to order your parts

16
2. Check Fuel: Fill if low. Use only unleaded gasoline with a pump sticker
octane rating of 86 or higher is recommended. Never use an oil and gasoline
mixture!
3. Air Cleaner: Never run the engine without the air cleaner! Rapid engine wear
will result from contaminants being drawn through the carburetor and into the
engine.
4. Engine Starting: Refer to the engine owner's manual for proper engine
starting procedure.
The head on the Gasoline Powered Saw should only rise to a
maximum of nine (9) inches above the surface of the Cutting
Table
Go to Discount-Equipment.com to order your parts

17
II. OPERATION
A. How to Mount Blade
Be sure blade shaft collars and arbor are free of dirt and all foreign material before
mounting blade on the arbor shaft. Tightening blade against an uneven surface
can cause fracture of an abrasive blade or cause to run-out of alignment, causing
excessive blade wear.
When tightening bolt against outside blade shaft collar, be sure to tighten enough
to hold the blade firmly without slipping but do not over tighten excessive
tightening can cause fracture of abrasive blades.
Using blade shaft wrench (in bracket) remove the blade shaft bolt and loosen
collar.
Place the blade on the arbor, and attach the loose collar and tighten the blade
shaft bolt securely.
B. "Step Cutting " With Abrasive Blades
Use "step cutting" without exception when cutting wet or dry with abrasive
blades. "Jam cutting", which is discussed and illustrated in the section following,
is to be used only with wet and dry cutting diamond blades.
1. Clamp and hold material firmly against the backstop on conveyor cart. Be
certain the material does not slip or rock during cutting operation, as this can bind
blade, causing excessive wear and fracture.
2. Move the conveyor cart near the blade, and pull down on the head until the
blade is lowered to a point where it will lightly contact the top of the material. Then
Go to Discount-Equipment.com to order your parts

18
start "step cutting" - which means passing the material beneath the blade with
rapid , (50 to 60 strokes per minute) full length strokes, taking a shallow cut
(approximately 1/8" deep ) on the forward, and also on the backward stroke.
Complete each rapid stroke backward and forward, by passing the material
beyond the center of the blade before starting the reverse movement of the cart.
The harder the material, the more rapid the forward and backward strokes.
3. "Step cutting as can be seen in the sketch below, lessens the area of the blade
circumference in contact with the material, keeping the blade cool, running free,
and cutting at peak efficiency. Don't get the impression "step" cutting means slow
cutting - actually it is 6 times faster than trying to "force" the cut by strong-arming
the material through the blade. Forcing the blade through with a deep cut causes
a longer area of the blade circumference to be in contact with the material, causing
excessive friction heat to be generated, which then causes the blade to "smear"
or "load" with fused material particles and lose its sharp cutting surface. (Note: If
improper operation should cause an abrasive blade to "smear", make several cuts
through a soft brick to "dress” the blade back to good cutting performance.)
C. "Jam Cutting" and "Step Cutting" With Diamond Blades
In "Jam" cutting the head is locked in a fixed position and the material is pushed
into it as shown in the sketch at the bottom. "Jam" cutting with the head locked in
a fixed position usually provides greater efficiency.
1. To lock the head into position, tighten the lever nut at the back of the saw.
2. "Step" cutting with diamond blades is done by applying more pressure to the
blade. Unlike "step" cutting with abrasive blades, "step" cutting with diamond
blades requires only a few passes through the material.
3. In cutting, clamp the material securely and hold it firmly against the conveyor
cart backstop. If the material is allowed to slip, resulting seizure of the blade may
bend the diamond blade steel center or cause a ring section to be twisted off.
4. Do not force the material or bump into the blade. When nearing completion of
the cut, retard and slightly hold back the conveyor cart. If this is not done, the
material may be pulled into the blade so fast that excessive pressure on the rim
may cause warping or twisting of the rim section.
Go to Discount-Equipment.com to order your parts

19
5. When a new diamond blade is broken in, make the first few cuts slowly until the
blade cuts freely and easily.
6. When the blade is cutting freely and easily. Use it! As long as it cuts
satisfactorily do not dress the diamond blade or remove it from the blade shaft.
7. After continuous cutting of extremely hard and dense materials, the blade may
slow down and it may be necessary to "dress" the cutting edge. To do this:
a. Use a rapid "step" cutting method for a few cuts - push the material
back and forth under the blade while it is cutting down. If this is not
sufficient:
b. Make one or two cuts in a soft brick or light weight block.
However, "dressing" should be done as seldom as possible - because too
much "dressing" reduces blade life.
D. Dry Cutting
1. Use a proper blade, which is marked for dry cutting.
2. Remove the water curtain.
3. Disconnect the water pump.
4. Use "step" cutting as explained previously when using abrasive blades.
5. Use "jam" or "step" cutting when using dry cutting diamond blades.
E. Wet Cutting
Water may be supplied either by filling the water pan to within a half-inch of the top
(for continuous use of the same water) or by placing a barrel of water next to the
saw (for continuous flow of clean water). When using water from a barrel, remove
water from pan and submerge it in water barrel. Remove the drain plug so the
used water and sludge will drain from pan.
1. Prepare water supply.
2. Install water curtain on cutting head pivot bar.
Go to Discount-Equipment.com to order your parts