Page 1
REV B: 08/17
OPERATOR’S MANUAL
INCLUDING: OPERATION, INSTRUCTION, INSTALLATION, MAINTENANCE AND PARTSBOOK
IMPORTANT: READ THIS MANUAL CAREFULLY BEFORE INSTALLING, OPERATING OR SERVICING
THIS TOOL.
ALL PURPOSE BREAKING SAW “77”
TOOL DATA
MODEL: 77
ASSEMBLY NO. 6001600
TYPE: AIR OPERATED
NET WEIGHT: 22 LBS (10 KG)
INLET AIR PRESSURE: 100 P.S.I. (6-7 BARS)
KENTMASTER MFG. CO., INC. 1801 SOUTH MOUNTAIN AVE., MONROVIA, CALIFORNIA 91016 UNITED STATES OF AMERICA
TELEPHONE: (626) 359-8888 FAX: (626) 303-5151
1 OF 21
Page 2
! WARNING
= Hazards or unsafe practices which could result in severe personal injury,
death or substantial property damage.
! CAUTION
= Hazards or unsafe practices which could result in minor personal injury,
product or property damage.
! NOTICE
= Important installation, operation or maintenance information.
OPERATING AND SAFETY INSTRUCTIONS
! WARNING
! WARNING
! WARNING
! WARNING
! WARNING
! WARNING
! WARNING
! WARNING
! WARNING
DO NOT OPERATE THIS TOOL UNTIL YOU HAVE READ AND UNDERSTOOD THE SAFETY
INSTRUCTIONS AND OPERATING MANUALS.
DO NOT OPERATE THIS TOOL UNTIL YOU HAVE RECEIVED TRAINING IN THE HANDLING,
OPERATION AND USE OF THIS TOOL.
STOP USING A MALFUNCTIONING OR DEFECTIVE TOOL IMMEDIATELY. REPORT ANY
PROBLEMS OR DEFECTS TO YOUR SUPERVISOR FOR REMOVAL OF THE TOOL FROM
SERVICE.
DO NOT ATTEMPT TO REPAIR THE TOOL YOURSELF.
DO NOT ALLOW UNAUTHORIZED PERSONS TO USE TOOL.
REMOVE AND DISCONNECT POWER FROM THE TOOL WHEN TOOL IS LEFT UNATTENDED OR
IS NOT IN USE.
NEVER TIE DOWN, BYPASS, ALTER OR MODIFY THE ACTIVATING SWITCHES OR TRIGGERS OF
THIS TOOL.
NEVER MAKE ALTERATIONS OR MODIFICATIONS TO THIS TOOL.
BE CONSTANTLY AWARE AND ALERT FOR UNSAFE CONDITIONS AND REPORT THEM
IMMEDIATELY TO YOUR SUPERVISOR.
! WARNING
NEVER PLACE YOUR HAND OR ANY PART OF YOUR BODY IN THE CUTTING PATH OF THE
TOOL.
! WARNING
NEVER ALLOW ANYONE ELSE TO PLACE THEIR HANDS OR ANY PART OF THEIR BODY IN THE
CUTTING PATH OF THE TOOL.
! WARNING
DO NOT ACTIVATE CONTROL SWITCHES OR TRIGGERS OF THIS TOOL UNLESS YOU INTEND
TO TEST OR OPERATE THIS TOOL.
! WARNING
DO NOT USE THIS TOOL FOR ANY PURPOSE OTHER THAN IT’S INTENDED PURPOSE.
WHEN OPERATING THIS TOOL WEAR THE PROTECTIVE GEAR AND SAFETY EQUIPMENT
! CAUTION
SUPPLIED TO YOU.
THE NOISE EMISSION (SOUND PRESSURE LEVEL) AT THE WORKSTATION MAY EXCEED 80 dB
! WARNING
(A). EAR AND SOUND PROTECTION GEAR IS REQUIRED.
Page 3
OPERATING INSTRUCTIONS
ONLY TRAINED PERSONNEL ARE TO OPERATE THIS TOOL.
! WARNING
1. TO ENSURE TOOL IS OPERATING PROPERLY, PERFORM FOLLOWING STEPS AT START OF EACH SHIFT:
• MAKE SURE TOOL MOVES UP AND DOWN FREELY WHILE HANGING FROM BALANCER OVERHEAD.
• WITH POWER TO TOOL TURNED ON, TEST TRIGGER FOR PROPER OPERATION.
• DEPRESS EACH TRIGGER SEPARATELY. TOOL SHOULD NOT ACTIVATE. DEPRESS BOTH TRIGGERS.
TOOL SHOULD ACTIVATE.
• IF TOOL HAS "ANTI-TIE DOWN" OPTION, BOTH TRIGGERS MUST BE DEPRESSED SIMULTANEOUSLY FOR
TOOL TO ACTIVATE.
2. TO PERFORM WORK, HOLD TOOL FIRMLY AT BOTH HANDLES. SQUEEZE TRIGGERS TO ACTIVATE TOOL.
3. POSITION TOOL AND PERFORM CUTTING OPERATION.
MAINTENANCE
ONLY TRAINED AND QUALIFIED PERSONNEL ARE TO PERFORM MAINTENANCE
! WARNING
AND SERVICE TO THIS TOOL.
THE COMPRESSED AIR DISTRIBUTION SYSTEM MUST BE LARGE ENOUGH TO SUPPLY AN ADEQUATE VOLUME OF CLEAN
AND DRY COMPRESSED AIR TO THE TOOL.
1. MAKE ALL NECESSARY LINE CONNECTIONS TO THE TOOL.
2. AN AIR FILTER-REGULATOR-LUBRICATOR (PART NO. 7200030) MUST BE INSTALLED IN AIR SUPPLY FOR EACH
TOOL.
3. FILL LUBRICATOR WITH KENTMASTER AIR MIST OIL (PART NO. 7903050). SET DRIP RATE ACCORDING TO
INSTRUCTIONS SUPPLIED. TURN ADJUSTMENT ON SIGHT FEED DOME TO INCREASE/DECREASE OIL DELIVERY.
MONITOR THE DEVICE BEING LUBRICATED AND READJUST IF NEEDED.
4. TOOL REQUIRES GREASING AT START OF EACH SHIFT. GREASE FOUR (4) LOCATIONS USING KENTMASTER GREASE
GUN (PART NO. 4501470) AND GREASE (PART NO. 7903070).
5. TOOL REQUIRES 40 S.C.F.M. OF AIR @ 90 P.S.I. AIR PRESSURE.
6. FLUSH AIR MOTOR AT END OF EACH DAY’S USE BY SQUIRTING A FEW SQUIRTS OF KENTMASTER AIR OIL MIST (PART
7903050) DIRECTLY INTO THE AIR INLET PORT. RUN TOOL A FEW SECONDS TO COAT AND PROTECT THE AIR MOTOR
AND INTERNAL PARTS OF TOOL.
BLADE REMOVAL AND CLEANING .
! WARNING
ALWAYS DISCONNECT POWER SUPPLY FROM TOOL BEFORE INSTALLING OR
REMOVING BLADE FROM TOOL.
! WARNING
ALWAYS WEAR WIRE MESH GLOVES WHEN INSTALLING OR REMOVING BLADE FROM TOOL.
1. REMOVE COLLAR (ITEM NO. 1, FIG. NO. 1).
2. REMOVE BLADE (ITEM NO. 2, FIG. NO. 1).
3. CLEAN ALL PARTS REMOVED WITH SOAP AND WATER.
4. SHARPEN OR REPLACE BLADES WHEN NECESSARY.
5. REASSEMBLE IN REVERSE ORDER.
Page 4
Figure 1 MODEL 77 – BLADE REPLACMENT
SERVICE
1. KEEP GOOD RECORDS OF ALL SERVICE ACTIVITY AND INCLUDE TOOL IN PREVENTIVE MAINTENANCE PROGRAM.
2. USE ONLY GENUINE KENTMASTER REPLACEMENT PARTS TO ASSURE PROPER PERFORMANCE OF TOOL.
3. CONTACT THE KENTMASTER SUPPLIER NEAREST YOU FOR PARTS AND CUSTOMER SERVICE INFORMATION.
PARTS BOOK
Page 5
Figure 2 MODEL “77” – MAIN ASSEMBLY
Page 6
6001600: "77" - ALL PURPOSE BREAKING SAW
ITEM PART # DESCRIPTION QTY
4000230 8" SAW BLADE, 150 TEETH 1
4000110 9" SAW BLADE THIN RIM, 240 TEETH 1
4000280 10" SAW BLADE, 120 TEETH 1
1
4000060 10" SAW BLADE, 220 TEETH 1
4000080 11" SAW BLADE, 240 TEETH 1
4000520 12" SAW BLADE, 240 TEETH 1
6001160 BLADE GUARD, FOR 8" BLADE 1
2
6001170 BLADE GUARD, FOR 9" & 10" BLADE 1
6001180 BLADE GUARD, FOR 11" & 12" BLADE 1
6003131 GEAR-NOSE ASSEMBLY FOR 8", 9" & 10" BLADE 1
3
6003160 GEAR-NOSE ASSEMBLY FOR 11" & 12" BLADE 1
6001090 SPACER-AIR MOTOR FOR 8", 9" & 10" BLADE 1
4
6003170 SPACER-AIR MOTOR FOR 11" & 12" BLADE 1
6001140 FRONT HANDLE WITH AIR SWITCH (FOR TWO TRIGGERS OPTION) 1
5
6001141 FRONT HANDLE WITHOUT AIR SWITCH (FOR ONE TRIGER OPTION) 1
6001191
6
6001190
7
6001605
8
7002680
9
7200030
10
7002450
11 3204030 BEARING 1
12 6000170 DRIVE SHAFT 1
13 6000590 NAME PLATE 1
14 6001250 COUPLING 1
15 6001400 AIR MOTOR AND GEAR CASE ASSEMBLY 1
16 6003140 REAR HANDLE ASSEMBLY 1
17 6003220 HANGER RING 1
18 6330160 MUFFLER 1
19 7310040 AIR HOSE 1
20 8081020 SCREW 2
21 8211060 SCREW 1
22 8311020 SET SCREW 1
23 8462020 ANCHOR SHACKLE 1
24 8703010 PLUG 1
25
4501610
26
4501300
27
4501320
28
4501350
DEPTH GAUGE FOR 8" BLADE / OPTIONAL
DEPTH GAUGE FOR 9 & 10" BLADE / OPTIONAL
POPPET VALVE ASSEMBLY / OPTIONAL
ADAPTER / OPTIONAL
REGULATOR/FILTER/LUBRICATOR / OPTIONAL
BUSHING / OPTIONAL
WRENCH / INCLUDED
WRENCH – AIR MOTOR, GEAR CASE / OPTIONAL
SPANNER WRENCH AND HANDLE / OPTIONAL
RATAINING RING PLIER / OPTIONAL
1
1
1
1
1
1
1
1
1
1
MODEL “77” WITH TWO TRIGGERS (FRONT HANDLE #6001140) REQUIRES POPPET VALVE (#6001605).
AN AIR FILTER-REGULATOR-LUBRICATOR (#7200030) MUST BE INSTALLED IN AIR SUPPLY FOR EACH TOOL.
Figure 3 BOM FOR MODEL “77”
Page 7
6003131: GEAR-NOSE ASSEMBLY FOR 8", 9" & 10" BLADE
ITEM PART # DESCRIPTION QTY
1 1000360 COVER GEAR NOSE 1
2 1000400 BEVEL/SPUR GEAR 1
3 1000410 PINION 1
4 1000440 GASKET 1
5 1000740 DRIVEN SPUR GEAR 1
6 1001520 SHAFT 1
7 1001530 SHAFT 1
8 3000030 LOCKWASHER 1
9 3001030 LOCKNUT 1
10 3521020 BEARING - DOUBLE ROW 1
11 3524030 BEARING 1
12 3650020 BEARING CONE 2
13 3650030 BEARING CUP 2
14 5001370 RETAINING RING 1
15 5001560 RETAINING RING 1
16 6003080 GEAR NOSE HOUSING 1
17 6003180 NUT - BLADE 1
18 7017110 GREASE FITTING 1
19 7885580 SEAL 1
20 8270530 SCREW 6
21 8411060 SCREW 4
22 8500470 NUT 1
23 8500520 NUT 1
24 8600440 KEY 2
25 8705000 WASHER 3
26 8705010 WASHER 1
27 8705470 WASHER 1
28 8712030 SPRING WASHER 2
29 8803080 INSERT 6
Figure 4 GEAR-NOSE ASSEMBLY FOR 8”, 9” & 10” BLADE
Page 8
6003160: GEAR NOSE ASSEMBLY FOR 11" & 12" BLADE
ITEM PART # DESCRIPTION QTY
1 1000400 BEVEL/SPUR GEAR 1
2 1000410 PINION 1
3 1000440 GASKET 1
4 1000740 DRIVEN SPUR GEAR 1
5 1001520 SHAFT 1
6 1001530 SHAFT 1
7 1001580 COVER GEAR NOSE 1
8 3000030 LOCKWASHER 1
9 3001030 LOCKNUT 1
10 3521020 BEARING - DOUBLE ROW 1
11 3524030 BEARING 1
12 3650020 BEARING CONE 2
13 3650030 BEARING CUP 2
14 5001370 RETAINING RING 1
15 5001560 RETAINING RING 1
16 6003150 GEAR NOSE HOUSING 1
17 6003180 NUT - BLADE 1
18 7017110 GREASE FITTING 1
19 7885580 SEAL 1
20 8270530 SCREW 6
21 8411060 SCREW 3
22 8500470 NUT 1
23 8500520 NUT 1
24 8600440 KEY 2
25 8705000 WASHER 3
26 8705010 WASHER 1
27 8705470 WASHER 1
28 8712030 SPRING WASHER 2
29 8803080 INSERT 6
Figure 5 GEAR-NOSE ASSEMBLY FOR 11” & 12” BLADE
Page 9
GEAR HOUSING DISASSEMBLY
1. REMOVE (2) NUTS, ITEMS 22 & 23 (FIGURE 4).
2. FROM REAR OF NOSE, ITEM 16, PRESS OUT SHAFT, ITEM 7, FIRST.
3. FROM REAR OF NOSE, ITEM 16, PRESS OUT SHAFT, ITEM 6, NEXT.
4. REMOVE RETAINING RING, ITEM 15.
5. FROM FRONT FACE OF NOSE, ITEM 16, PRESS OUT PINION, ITEM 3.
6. FOLD BACK LOCKWASHER TAB, ITEM 8, OUT OF LOCKNUT SLOT, ITEM 9.
7. USING LOCKNUT WRENCH (OPTIONAL), ITEM 27 (FIGURE 2), REMOVE LOCKNUT, ITEM 9 (FIGURE 4).
GEAR HOUSING REASSEMBLY
1. CLEAN AND LUBRICATE ALL PARTS PRIOR TO REASSEMBLY.
2. REASSEMBLE PARS IN REVERSE ORDER.
3. BE SURE TO REASSEMBLE (4) SPRING WASHER, ITEM 28 (FIGURE 4), ONTO PINION, ITEM 3, IN CORRECT
ORIENTATION
6001140: FRONT HANDLE WITH AIR SWITCH
ITEM PART # DESCRIPTION QTY
1 6001150 BRACKET, FRONT HANDLE, RIGHT 1
2 6001151 BRACKET, FRONT HANDLE, LEFT 1
3 6300770 VALVE PLUG 1
4 6541690 GUARD 1
5 6600360 VALVE STEM 1
6 6600500 LEVER 1
7 6620350 SLEEVE 1
8 6620400 AIR HANDLE 1
9 7036510 ELBOW 2
10 7300710 RED AIR TUBE 1
11 7300720 GREEN AIR TUBE 1
12 7680080 O-RING 1
13 7680140 O-RING 1
14 8211140 SCREW 2
15 8500580 NUT 1
16 8620080 PIN 1
17 8890010 SPRING 1
FRONT HANDLE WITH AIR SWITCH (#6001140) REQUIRES POPPET VALVE (#6001605).
Figure 6 FRONT HANDLE WITH AIR SWITCH
KENTMASTER MFG. CO., INC. 1801 SOUTH MOUNTAIN AVE., MONROVIA, CALIFORNIA 91016 UNITED STATES OF AMERICA
TELEPHONE: (626) 359-8888 FAX: (626) 303-5151
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6001141: FRONT HANDLE WITHOUT SWITCH
ITEM PART # DESCRIPTION QTY
1 6001150 BRACKET, FRONT HANDLE, RIGHT 1
2 6001151 BRACKET, FRONT HANDLE, LEFT 1
3 6550710 CROSS BAR, HANDLE 1
4 8211140 SCREW 2
5 8500580 NUT 2
Figure 7 FRONT HANDLE WITHOUT SWITCH
6003140: REAR HANDLE ASSEMBLY
ITEM PART # DESCRIPTION QTY
1 6000100 TRIGGER 1
2 6000620 SPRING 1
3 6000630 PLUG 1
4 6001440 REAR HANDLE 1
5 6002320 TRIGGER 1
6 7034060 MALE QUICK CONNECT 1
7 7034260 FEMALE SOCKET 1
8 7681120 O-RING 1
9 7689020 O-RING 1
10 8029060 SCREW 4
11 8612120 PIN 1
Figure 8 REAR HANDLE ASSEMBLY
KENTMASTER MFG. CO., INC. 1801 SOUTH MOUNTAIN AVE., MONROVIA, CALIFORNIA 91016 UNITED STATES OF AMERICA
TELEPHONE: (626) 359-8888 FAX: (626) 303-5151
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Page 11
6001400: AIR MOTOR AND GEAR CASE ASSEMBLY
ITEM PART # DESCRIPTION QTY
1 6000940 DEFLECTOR 1
2 6001010 GEAR CASE ASSEMBLY 1
3 6001450 AIR MOTOR ASSEMBLY 1
4 7680360 O-RING 2
5 8311030 SET SCREW 1
Figure 9 AIR MOTOR AND GEAR CASE ASSEMBLY
KENTMASTER MFG. CO., INC. 1801 SOUTH MOUNTAIN AVE., MONROVIA, CALIFORNIA 91016 UNITED STATES OF AMERICA
TELEPHONE: (626) 359-8888 FAX: (626) 303-5151
6001010: GEAR CASE ASSEMBLY
ITEM PART # DESCRIPTION QTY
1 6000860 GEAR CASE 1
2 6001030 GEAR CAGE 1
3 7017110 GREASE FITTING 2
4 7774100 SEAL 1
Figure 10 GEAR CASE ASSEMBLY
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6001450: AIR MOTOR ASSEMBLY
ITEM PART # DESCRIPTION QTY
1 3072370 BEARING 2
2 6000730 PIN 1
3 6000740 ROTOR 1
4 6000750 ROTOR BLADES 5
5 6000760 LOWER END PLATE 1
6 6001020 LONG GEAR SPINDLE 1
7 6001100 HOUSING, AIR MOTOR 1
8 6001460 CYLINDER 1
9 6001470 UPPER END PLATE 1
10 7017110 GREASE FITTING 1
11 8641580 GROOVED PIN 1
KENTMASTER MFG. CO., INC. 1801 SOUTH MOUNTAIN AVE., MONROVIA, CALIFORNIA 91016 UNITED STATES OF AMERICA
TELEPHONE: (626) 359-8888 FAX: (626) 303-5151
Figure 11 AIR MOTOR ASSEMBLY
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Page 13
6001030: GEAR CAGE ASSEMBLY
ITEM PART # DESCRIPTION QTY
1 3700470 NEEDLE BEARING 3
2 5601250 RETAINING RING 1
3 6000790 RING GEAR 1
4 6001040 PIN 3
5 6001050 IDLER GEAR 3
6 6001060 GEAR CAGE AND SPLINE RING ASSEMBLY 1
Figure 12 GEAR CAGE ASSEMBLY
GEAR CASE AND AIRMOTOR DISASSEMBLY
1. LOOSEN SET SCREW, ITEM 5 (FIGURE 9).
2. USIN WRENCH (OPTIONAL), ITEM 26 (FIGURE 2), REMOVE CASE, ITEM 2 (FIGURE 9).
3. TO DISASSEMBLE GEAR CAGE ASSEMBLY:
• REMOVE RETAINING RING, ITEM 2 (FIGURE 12).
• PRESS OUT PINS (3) AND BEARINGS (3), ITEMS 4 AND 1 (FIGURE 12).
4. SLIDE DEFLECTOR, ITEM 1 (FIGURE 9), OFF HOUSING, ITEM 3 (FIGURE 9).
5. SLIDE AIR MOTOR OUT OF HOUSING, ITEM 7 (FIGURE 11).
6. PULL GEAR, ITEM 6 (FIGURE 11), OUT OF AIR MOTOR.
7. PULL PLATES, ITEMS 5 AND 9 (FIGURE 11), OFF CYLINDER, ITEM 8 (FIGURE 11).
GEAR CASE AND AIRMOTOR REASSEMBLY
1. CLEAN AND LUBRICATE ALL PARTS PRIOR TO REASSEMBLY.
2. REASSEMBLE ALL PARTS IN REVERSE ORDER.
3. HAND TIGHTEN CASE, ITEM 2 (FIGURE 9), ONTO HOUSING, ITEM 3 (FIGURE 9).
4. ATTACH AIR TO TOOL. WITH TOOL ACTIVATED, TIGHTEN WITH A WRENCH, CASE ONTO HOUSING. THIS
HELPS MAINTAIN THE ALIGNMENT OF AIRMOTOR TO GEAR CASE ASSEMBLY. DISCONNECT AIR SUPPLY.
KENTMASTER MFG. CO., INC. 1801 SOUTH MOUNTAIN AVE., MONROVIA, CALIFORNIA 91016 UNITED STATES OF AMERICA
TELEPHONE: (626) 359-8888 FAX: (626) 303-5151
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Page 14
6001190: DEPTH GAUGE FOR 9" & 10" BLADE
ITEM PART # DESCRIPTION QTY
1 1002300 GAUGE - 10" 1
2 1002540 LEVER 1
3 1002550 BOLT 1
4 1002560 WASHER 1
5 1002570 NUT 1
6 1002580 SPRING LOAD 1
7 1002590 LEVER RETAINER 2
8 6201200 WASHER 1
9 8031060 SCREW 1
10 8505100 WASHER 1
Figure 13 DEPTH GAUGE FOR 9” & 10” BLADE
6001191: DEPTH GAUGE FOR 8" BLADE
ITEM PART # DESCRIPTION QTY
1 1002540 LEVER 1
2 1002550 BOLT 1
3 1002560 WASHER 1
4 1002570 NUT 1
5 1002580 SPRING LOAD 1
6 1002590 LEVER RETAINER 2
7 6003240 DEPTH GAUGE 1
8 6201200 WASHER 1
9 8031060 SCREW 1
10 8505100 WASHER 1
Figure 14 DEPTH GAUGE FOR 8” BLADE
KENTMASTER MFG. CO., INC. 1801 SOUTH MOUNTAIN AVE., MONROVIA, CALIFORNIA 91016 UNITED STATES OF AMERICA
TELEPHONE: (626) 359-8888 FAX: (626) 303-5151
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Page 15
6001605: POPPET VALVE ASSEMBLY
ITEM PART # DESCRIPTION QTY
1 7003680 BUSHING 1
2 7004330 TEE, STREET 1
3 7036350 ELBOW 1
4 7036520 ELBOW 1
5 7037860 UNION 2
6 7300970 RED AIR TUBE 1
7 7300980 GREEN AIR TUBE 1
8 7802050 BREATHER VENT FILTER 1
9 7802500 POPPET VALVE 1
10 8211240 SCREW 2
POPPET VALVE IS USED WITH MODEL “77” WITH TWO TRIGGERS.
Figure 15 POPPET VALVE ASSEMBLY
KENTMASTER MFG. CO., INC. 1801 SOUTH MOUNTAIN AVE., MONROVIA, CALIFORNIA 91016 UNITED STATES OF AMERICA
TELEPHONE: (626) 359-8888 FAX: (626) 303-5151
15 OF 21
Page 16
WIRING DIAGRAM
This wiring diagram is for model “77” with two triggers. As shown on the diagram above, two triggers option
requires poppet valve (Kentmaster part No. 6001605).
Figure 16 WIRING DIAGRAM
KENTMASTER MFG. CO., INC. 1801 SOUTH MOUNTAIN AVE., MONROVIA, CALIFORNIA 91016 UNITED STATES OF AMERICA
TELEPHONE: (626) 359-8888 FAX: (626) 303-5151
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Page 17
[ENGLISH]
GENERAL INFORMATION
MODELS
“77” ALL PURPOSE BREAKING SAW WIT TWO TRIGGERS
“77” ALL PURPOSE BREAKING SAW WIT ONE TRIGGER
________________________________________________________________________________
SERVICE CENTERS
KENTMASTER LTD. (U.K) KENTMASTER MFG. CO., INC.
16 AVONBANK INDUSTRIAL CENTRE 1801 SOUTH MOUNTAIN AVE.
WEST TOWN ROAD MONROVIA, CALIFORNIA 91016
AVONMOUTH - BRISTOL BS11 9DE UNITED STATES OF AMERICA
UNITED KINGDOM
TELEPHONE: ++ 44- (0) 117- 9235035 TELEPHONE: (626) 359-8888
FAX: ++ 44- (0) 117- 9829010 FAX: (626) 303-5151
KENTMASTER MFG. CO., INC. 1801 SOUTH MOUNTAIN AVE., MONROVIA, CALIFORNIA 91016 UNITED STATES OF AMERICA
TELEPHONE: (626) 359-8888 FAX: (626) 303-5151
17 OF 21
Page 18
NOTICE TO EMPLOYER AND PURCHASER OF TOOL
NOTICE TO SAFETY DIRECTOR
You have purchased a powerful tool that, if misused, can cause severe injury and
harm to your employees. You must instruct your employees in the safe and proper
use of this tool and to follow the safety procedures and instructions that have been
supplied by the manufacturer of this tool. Please follow the following instructions.
1. Instruct tool operators to test the tool each day before using it to be sure it does not malfunction.
Remove and repair any tool that malfunctions.
2. Instruct tool operators to immediately stop using a tool that malfunctions or is defective.
3. Instruct personnel to immediately remove all tools that malfunction. Be sure to disconnect tool from
power supply.
4. Instruct all personnel to stay clear of tool, and not to stand or walk in front of, or next to tool when in use.
5. Point out to all personnel the dangers related to the misuse of tool and the importance of following
safety procedures and instructions.
6. Do not make, or allow others to make, alterations or modifications to this tool.
Replace all lost or illegible labels.
7. Follow all safety, installation and maintenance instructions provided with this tool. Establish proper
safety procedures in accordance with local and national requirements to prevent accidental energizing
of tool that can cause injuries.
8. If this tool is sold or change in ownership takes place, you must provide the new owner all safety
instructions, notices and maintenance instructions you were originally provided. You can obtain
additional copies of the instructions from Kentmaster, free of charge upon request.
9. Give copies of instructions to: (A) Tool Operators
(B) Maintenance Supervisor
(C) Clean-up Supervisor
KENTMASTER MFG. CO., INC. 1801 SOUTH MOUNTAIN AVE., MONROVIA, CALIFORNIA 91016 UNITED STATES OF AMERICA
TELEPHONE: (818) 359-8888 FAX: (818) 303-5151
Page 18 of 21
Page 19
GENERAL INFORMATION
____________________________________________________________________________________________
COVERING: SAFETY PRECAUTIONS AND PLACING INTO SERVICE
AIR POWERED ALL PURPOSE BREAKING SAW
____________________________________________________________________________________________
READ THIS MANUAL CAREFULLY BEFORE INSTALLING, OPERATING OR SERVICING
THIS TOOL
_____________________________________________________________________________________________________
IT IS THE RESPONSIBILITY OF THE EMPLOYER TO PLACE THIS INFORMATION INTO THE HANDS OF THE OPERATOR.
_____________________________________________________________________________________________________
PLACING INTO SERVICE
_____________________________________________________________________________________________________
! WARNING
= Hazards or unsafe practices which could result in severe personal injury, death or
substantial property damage.
! CAUTION
= Hazards or unsafe practices which could result in minor personal injury, product or
property damage.
! NOTICE
= Important installation, operation or maintenance information.
Installation, adjustment repair and maintenance of this tool must be made by trained
! WARNING
and qualified personnel.
Always disconnect power supply from tool before:
! WARNING
(A) Installing or removing blade from tool.
(B) Making repairs or adjustments to the tool.
(C) performing maintenance or cleanup work.
INSTALLATION INSTRUCTIONS
MAINTENANCE
ONLY TRAINED AND QUALIFIED PERSONNEL ARE TO PERFORM MAINTENANCE
! WARNING
AND SERVICE TO THIS TOOL.
THE COMPRESSED AIR DISTRIBUTION SYSTEM MUST BE LARGE ENOUGH TO SUPPLY AN ADEQUATE VOLUME OF
CLEAN AND DRY COMPRESSED AIR TO THE TOOL.
1. MAKE ALL NECESSARY LINE CONNECTIONS TO THE TOOL.
2. AN AIR FILTER-REGULATOR-LUBRICATOR (PART NO. 7200030) MUST BE INSTALLED IN AIR SUPPLY FOR
EACH TOOL.
3. FILL LUBRICATOR WITH KENTMASTER AIR MIST OIL (PART NO. 7903050). SET DRIP RATE ACCORDING TO
INSTRUCTIONS SUPPLIED. TURN ADJUSTMENT ON SIGHT FEED DOME TO INCREASE/DECREASE OIL
DELIVERY. MONITOR THE DEVICE BEING LUBRICATED AND READJUST IF NEEDED.
4. TOOL REQUIRES GREASING AT START OF EACH SHIFT. GREASE FOUR (4) LOCATIONS USING KENTMASTER
GREASE GUN (PART NO. 4501470) AND GREASE (PART NO. 7903070).
5. TOOL REQUIRES 40 S.C.F.M. OF AIR @ 90 P.S.I. AIR PRESSURE.
6. FLUSH AIR MOTOR AT END OF EACH DAY’S USE BY SQUIRTING A FEW SQUIRTS OF KENTMASTER AIR OIL
MIST (PART 7903050) DIRECTLY INTO THE AIR INLET PORT. RUN TOOL A FEW SECONDS TO COAT AND
PROTECT THE AIR MOTOR AND INTERNAL PARTS OF TOOL
KENTMASTER MFG. CO., INC. 1801 SOUTH MOUNTAIN AVE., MONROVIA, CALIFORNIA 91016 UNITED STATES OF AMERICA
TELEPHONE: (818) 359-8888 FAX: (818) 303-5151
Page 19 of 21
Page 20
7. A BALANCER IS REQUIRED FOR OPERATION AND USE OF THIS TOOL. WEIGHT OF TOOL MUST FALL WITHIN
WEIGHT RANGE OF BALANCER.
8. INSTALL BALANCER ABOVE WORK AREA. BALANCER MUST HAVE SUFFICIENT VERTICAL TRAVEL SO
OPERATOR CAN REACH ENTIRE WORK AREA WITH TOOL WITHOUT STRAIN.
9. ADJUST BALANCER ACCORDING TO THE OPERATOR'S PREFERENCE AND COMFORT.
WE STRONGLY SUGGEST THAT AN ADDITIONAL SAFETY CHAIN BE USED TO CHAIN
! WARNING
BALANCER TO OVERHEAD TROLLEY. THIS ADDITIONAL MEASURE OF SAFETY WILL
HELP REDUCE INJURIES.
OPERATING INSTRUCTIONS
ONLY TRAINED PERSONNEL ARE TO OPERATE THIS TOOL.
! WARNING
1. HOLD TOOL FIRMLY AT BOTH TRIGGER HANDLES. SQUEEZE TRIGGERS SIMULTANEOUSLY TO ACTIVATE
TOOL.
2. DO NOT EXERT EXCESSIVE PRESSURE. ALLOW TIME FOR THE TOOL TO CUT.
MAINTENANCE
ONLY TRAINED AND QUALIFIED PERSONNEL ARE TO PERFORM MAINTENANCE
! WARNING
AND SERVICE TO THIS TOOL.
1. FOLLOW PROCEDURES NO. 3 TO 6 OF INSTALLATION INSTRUCTIONS.
BLADE REMOVAL AND CLEANING .
ALWAYS DISCONNECT POWER SUPPLY FROM TOOL BEFORE INSTALLING OR
! WARNING
REMOVING BLADE FROM TOOL.
! WARNING
ALWAYS WEAR WIRE MESH GLOVES WHEN INSTALLING OR REMOVING BLADES FROM TOOL.
1. REMOVE COLLAR (ITEM NO. 1, FIG. NO. 1).
2. REMOVE BLADE (ITEM NO. 2, FIG. NO. 1).
3. CLEAN ALL PARTS REMOVED WITH SOAP AND WATER.
4. SHARPEN OR REPLACE BLADES WHEN NECESSARY.
5. REASSEMBLE IN REVERSE ORDER.
SERVICE
1. KEEP GOOD RECORDS OF ALL SERVICE ACTIVITY AND INCLUDE TOOL IN YOUR PREVENTIVE MAINTENANCE
PROGRAM.
2. USE ONLY GENUINE KENTMASTER REPLACEMENT PARTS TO ASSURE PROPER PERFORMANCE OF TOOL.
3. CONTACT THE KENTMASTER SUPPLIER NEAREST YOU FOR PARTS AND CUSTOMER SERVICE INFORMATION.
KENTMASTER MFG. CO., INC. 1801 SOUTH MOUNTAIN AVE., MONROVIA, CALIFORNIA 91016 UNITED STATES OF AMERICA
TELEPHONE: (818) 359-8888 FAX: (818) 303-5151
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INDEX
OPERATING AND SAFETY INSTRUCTIONS ........................................................................................................................... 2
OPERATING INSTRUCTIONS ............................................................................................................................................... 3
MAINTENANCE ....................................................................................................................................................................... 3
SERVICE ......................................................................................................................................................................................... 4
PARTS BOOK ................................................................................................................................................................................. 4
GEAR HOUSING DISASSEMBLY ......................................................................................................................................... 9
GEAR HOUSING REASSEMBLY .......................................................................................................................................... 9
GEAR CASE AND AIRMOTOR DISASSEMBLY .............................................................................................................. 13
GEAR CASE AND AIRMOTOR REASSEMBLY ............................................................................................................... 13
WIRING DIAGRAM ..................................................................................................................................................................... 16
NOTICE TO EMPLOYER AND PURCHASER OF TOOL ....................................................................................................... 18
GENERAL INFORMATION ....................................................................................................................................................... 19
INSTALLATION INSTRUCTIONS ...................................................................................................................................... 19
MAINTENANCE .................................................................................................................................................................... 19
OPERATING INSTRUCTIONS ............................................................................................................................................. 20
MAINTENANCE ..................................................................................................................................................................... 20
SERVICE .................................................................................................................................................................................. 20
INDEX ........................................................................................................................................................................................... 21
FIGURES - INDEX ...................................................................................................................................................................... 21
FIGURES - INDEX
Figure 1 MODEL 77 – BLADE REPLACMENT..........................................................................................................................4
Figure 2 MODEL “77” – MAIN ASSEMBLY..............................................................................................................................5
Figure 3 BOM FOR MODEL “77”................................................................................................................................................6
Figure 4 GEAR-NOSE ASSEMBLY FOR 8”, 9” & 10” BLADE................................................................................................7
Figure 5 GEAR-NOSE ASSEMBLY FOR 11” & 12” BLADE....................................................................................................8
Figure 6 FRONT HANDLE WITH AIR SWITCH.......................................................................................................................9
Figure 7 FRONT HANDLE WITHOUT SWITCH.....................................................................................................................10
Figure 8 REAR HANDLE ASSEMBLY......................................................................................................................................10
Figure 9 AIR MOTOR AND GEAR CASE ASSEMBLY............................................................................................................11
Figure 10 GEAR CASE ASSEMBLY...........................................................................................................................................11
Figure 11 AIR MOTOR ASSEMBLY..........................................................................................................................................12
Figure 12 GEAR CAGE ASSEMBLY..........................................................................................................................................13
Figure 13 DEPTH GAUGE FOR 9” & 10” BLADE..................................................................................................................14
Figure 14 DEPTH GAUGE FOR 8” BLADE.............................................................................................................................14
Figure 15 POPPET VALVE ASSEMBLY...................................................................................................................................15
Figure 16 WIRING DIAGRAM...................................................................................................................................................16
KENTMASTER MFG. CO., INC. 1801 SOUTH MOUNTAIN AVE., MONROVIA, CALIFORNIA 91016 UNITED STATES OF AMERICA
TELEPHONE: (818) 359-8888 FAX: (818) 303-5151
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