RedMax HC510DV Owner's/Operator's Manual
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RedMax HC510DV Owner's/Operator's Manual

RedMax HC510DV Owner's/Operator's Manual

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OWNER / OPERATOR MANUAL
Dust Collection Type
WARNING
Diamond wheel use only, Do not use
abrasive wheels with this product.
WARNING
The engine exhaust from this product
contains chemicals known to the State
of California to cause cancer, birth
defects or other reproductive harm.
APPLICABLE SERIAL NUMBERS :
CUT-OFF SAW
HC510DV
200101 and up
WARNING
Before using our products, please
read this manual carefully to
understand the proper use of your
unit.
T2069-93110 (310)

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  • Page 1 State of California to cause cancer, birth defects or other reproductive harm. APPLICABLE SERIAL NUMBERS : CUT-OFF SAW HC510DV Before using our products, please read this manual carefully to understand the proper use of your unit.

  • Page 3: Table Of Contents

    SAFETY FIRST Instructions contained in warnings within this manual marked with a critical points which must be taken into consideration to prevent possible serious bodily injury, and for this reason you are requested to read all such instructions carefully and follow them without fail. ■...

  • Page 4: Parts Location

    1. Parts location 2. Specifications Model Name and Number ···································································CUT-OFF SAW, HC510DV Overall Size (with 14 in. Blade)(LxWxH) ························· 29.4(735)x9.4(235)x19.8(495) in. (mm) Dry Weight (excluding Blade) ··············································································· 29.0 lbs (13 kg) Engine Type ··············································· Single-Cylinder Air-Cooled 2-Cycle Gasoline Engine Displacement ······················································································ 3.1cu-in. (49.3cm Max.

  • Page 5: Warning Labels On The Machine

    3. Warning labels on the machine IMPORTANT If warning label peel off or become soiled and impossible to read, you should contact the dealer from which you purchased the product to order new labels and affix them in the required location(s). WARNING Never modify your machine.

  • Page 6: Symbols On The Machine

    ENGINE FAMILY : 3KZXS. 0494LM ; EM ENGINE DISPLACEMENT : 49.3cm REFER TO OWNER’S MANUMAL FOR MAINTE- NANCE SPECIFICATIONS AND ADJUSTMENTS. MANUFACTURED: RedMax Made in Japan 6  WARNING For safe operation and maintenance, symbols are indicated on the machine. According to these indications, please be careful not to take a mistake.

  • Page 7: For Safe Operation

    5. For safe operation ■ BEFORE USING THE MACHINE a. Cut-off saws are high-speed cutting tools and very dangerous to operate; therefore it is very important that you read and fully understand the contents of the owner’s manual before using. b.
  • Page 8 ■ WARNING CONSIDERING HANDLING OF FUEL 1. The engine of the RedMax product is designed to run on a mixed fuel which contains highly flammable gasoline. Never store cans of fuel or...
  • Page 9 5. For safe operation refill the tank of the unit in any place where there is a boiler, stove, wood fire, electrical sparks, welding sparks, or any other source of heat or fire which might ignite the fuel. 2. Never smoke while operating the unit or refilling its fuel tank.
  • Page 10 Keep the wheel always sharp. While using the unit, if the wheel won’t cut well caused by clogging, set the teeth of the saw by cutting concrete block, clayware or sandstone. f. Avoid standing in a direct line with the cutting wheel.
  • Page 11 When replacing any parts or when replacing the oil or any lubricants, always be sure to use only RedMax products or products which have been certified by RedMax. e. On checking or servicing, be sure to wear thick,...

  • Page 12: Set Up

    6. Set up 12  WARNING Use adequate cutter blades suited to materials to be cut. Use of inadequate cutter blades may cause irregular wear of blades, poor cutting performances, or irregular overheating, etc. Continuance of those inadequate operations may damage the blades and cause serious accidents.
  • Page 13 6. Set up ■ MOUNTING OF CUTTER BLADE WARNING The flange bolt shall be securely fixed. (Fixing torque: 266~434 in-lbs (30~50 N·m)) Insufficient fixing of the bolt may cause brake away of the blade and is extremely dangerous. 1. Unscrew a flange bolt and remove flange washer (A).

  • Page 14: Fuel

    3m (10ft) away from the fueling point before starting the engine. • The RedMax engines are lubricated by oil specially formulated for air-cooled 2-cycle gasoline engine use. If RedMax oil is not available, use an anti-oxidant added quality oil expressly labeled for air-cooled 2-cycle engine use.
  • Page 15 7. Fuel again for at least one minute. As some oils may be difficult to agitate depending on oil ingredients, sufficient agitation is necessary for the engine to last long. Be careful that, if the agitation is insufficient, there is an increased danger of early piston seizing due to abnormally lean mixture.

  • Page 16: Operation

    8. Operation 16  ■ STARTING ENGINE WARNING • Before starting the engine, check if there is any problem such as loose fitting of cutter blade or fuel leakages. • Place the machine on the ground and hold securely when starting. Do not start the engine while hanging it by one hand because the cutter blade may contact with the ground or other obstacles.
  • Page 17 8. Operation NOTE In case of restarting immediately after stopping the engine, pull the starter knob with the choke knob pushed in (choke open). 4. Push down a safety lock above the rear handle and pull the throttle lever. Push in a start setting button and set the throttle lever to a starting position.
  • Page 18 8. Operation 18  pulled, push in the choke knob and pull the rope until it starts. Otherwise, remove a spark plug to dry its electrode, and reassemble. Try again the starting operation. 8. When the engine is started, lightly pull the throttle lever and unlock the start setting button.
  • Page 19 8. Operation ■ CUTTING OPERATION • For cutting, hold the machine in your body centre and lead the dust hose through both legs. Lightly bend the knees and keep a stable posture. • When applying the cutter blade to a work, start with low speed to form a guide notch, and then cut with full throttle.

  • Page 20: Maintenance

    • Be sure to stop the engine for check and maintenance. • Do not modify the machine nor disassemble the engine. • Use RedMax genuine or specified spare parts and oils. ■ AIR CLEANER The air cleaner is adhered with much dusts produced by a cutting operation.
  • Page 21 9. Maintenance 0.6~0.7mm or damaged. • Avoid dusts to penetrate into the engine when removing the air filter. Cover an air inlet with a cloth after removing the filter. • To keep the engine performance, change the air filter at every 20 hours of operation. ■...
  • Page 22 9. Maintenance 22  ■ COOLING AIR PASSAGE WARNING • Do not touch the cylinder, muffler or spark plug by bare hands immediately after stopping the engine. There is a danger of burn for its high temperature. • On the starting inspection, check the muffler and clean if there are adhered wood chips or dry leaves.
  • Page 23 9. Maintenance This machine is equipped with a spring loaded semi-automatic tensioner. Therefore, by slackening cutting head fixing nuts and bolts, correct tension is always maintained. (MA6) Apply following procedures if readjustment is required: (1) Cutting head (2) Spring (3) Drive case 1.
  • Page 24 9. Maintenance MA10 MA11 MA12 MA13 24  3. Slacken a stay bolt on opposite side and remove together with a washer. (MA10) (1) Stay (2) Washer (3) Bolt 4. Slacken a semi-auto tensioner bolt using angle wrench. Push the cutting head toward the engine while swinging it up and down to slacken the belt tension.
  • Page 25 9. Maintenance MA14 2. Put the belt into a pulley groove on the main body. Then engage fan drive spline axle of the drive case with splines on the main body. 3. Assemble the drive case to the main body with 2 nuts and 4 screws.
  • Page 26 2. Start engine and allow it to warm up in low speed for a few minutes. 3. Turn idle adjusting screw (T) counter-clockwise so that saw chain does not turn. If idling speed is too slow, turn the screw clockwise.
  • Page 27 9. Maintenance 4. Make a test cut adjust the H needle for best cutting power, not for maximum speed. Standard Idle Speed: 2300~2700 rpm. (1) Idle adjust screw (T) (2) Low speed needle (L) (3) High speed needle (H) 27 ...
  • Page 28 To exchange rope, ask sales dealer or obtain RedMax genuine part and go through following procedure: 1. Remove a recoil case from the machine. (MA16) (1) Recoil case 2.
  • Page 29 9. Maintenance MA19 MA20 MA21 NOTE In case irregular wear is observed on a recoil boss or reel bore, exchange for new components. 5. Remove the rope from the reel. 6. Make a knot in end of new rope and lead it through a reel hole from outside.
  • Page 30 9. Maintenance 30  rope slowly be retracted to the reel. 12.Pull the rope 2~3 times to confirm if it is fully retracted. If it is not fully retracted, pull it out halfway and while holding the reel with left hand, hitch the rope to the reel notch and turn additional 2~3 turns clockwise.

  • Page 31: Storage

    10. Storage WARNING When discharging fuel, be careful not to spill fuel and completely wipe off if spilled. Also, securely close a cap of storage tank. IMPORTANT • In case the machine is left for long time, inside of the carburetor may be clogged and cause engine failure (starting failure or poor output power).

  • Page 32: Troubleshooting Guide

    (exhaust port) ➞ carbon is built-up air cleaner cylinder fin, fan cover When your unit seems to need further service, please consult with our RedMax service shop in your area. 32  PROBABLE CAUSES ➞ incorrect fuel ➞...

  • Page 33: Parts List

    (7) years after the machine is discontinued. It is also possible that some parts may be available even after the limit of seven (7) years.] APPLICABLE SERIAL NUMBERS : CUT-OFF SAW HC510DV 200101 and up Dec 2002 33 ...
  • Page 34 12. Parts list Fig.1 CUTTER UNIT HC510DV (S/N 200101 and up) 34 ...
  • Page 35 Fig.1 CUTTER UNIT HC510DV (S/N 200101 and up) Key# Part Number Description 2894-61100 CASE COMP 01252-60510 • BOLT 06004-06001 • BEARING 2670-21220 • SEAL 2894-64110 SHAFT, inlet 2894-64120 PULLEY 2894-64210 2894-64250 SPACER 2894-64300 SHAFT COMP 01643-30823 WASHER 3350-43231 2894-64410 COVER, fan...
  • Page 36 12. Parts list Fig.2 POWER UNIT (1) HC510DV (S/N 200101 and up) 36 ...
  • Page 37 Fig.2 POWER UNIT (1) HC510DV (S/N 200101 and up) Key# Part Number Description 2884-12110 CYLINDER 2884-14100 VALVE ASS'Y 3388-23110 GROMMET 2880-14111 PIPE 2880-14120 SPRING 2880-14150 GUIDE 2670-14311 BRACKET 2670-14320 SCREW M5x14 2880-14350 SPACER 2880-14361 GASKET 2670-14211 GASKET, cylinder 2850-14220 BOLT M5x20...
  • Page 38 12. Parts list Fig.3 POWER UNIT (2) HC510DV (S/N 200101 and up) 38 ...
  • Page 39 Fig.3 POWER UNIT (2) HC510DV (S/N 200101 and up) Key# Part Number Description 2884-31110 COVER, cylinder 2670-14320 SCREW M5x14 2884-82603 PLATE COMP 2884-82630 • SEAL 2884-82640 • SEAL, plate 2670-14320 SCREW M5x14 2884-83100 CLEANER COMP 2884-83121 • ELEMENT 2884-83301 PLATE ASS'Y 2884-83320 •...
  • Page 40 12. Parts list Fig.4 CARBURETOR HC510DV (S/N 200101 and up) Key# Part Number Description T2069-81000 CARBURETOR ASS’Y (WT-648) 3306-81380 • SCREEN 2810-81120 • COVER 3310-81130 • SCREW T2050-06020 • GASKET KIT 3310-81230 • LEVER 3310-81240 • SCREW 2841-81270 • SPRING 3310-81250 •...
  • Page 41 • WRENCH T25 2670-96320 • WRENCH T20 2894-96000 SPACIAL TOOL SET (OP) 2890-96100 • PULLER ASS'Y (OP) 2616-96210 • WRENCH (OP) 2670-96220 • STOPPER (OP) HC510DV (S/N 200101 and up) Q'ty Key# Part Number 3350-96230 3350-96620 2670-96660 3350-96240 2670-96410 2810-96710 2894-96810...
  • Page 42 CALIFORNIA EMISSION CONTROL WARRANTY STATEMENT YOUR WARRANTY RIGHTS AND OBLIGATIONS The California Air Resources Board and KOMATSU ZENOAH are pleased to explain the emission control system warranty on your 1995 and later small off-road engine. In California, new small off-road engines must be designed, built and equipped to meet the state’s stringent anti-smog standards.

  • Page 43: Limited Warranty

    ZENOAH AMERICA INC. AT (770)-381-5147. IMPORTANT: YOU WILL RECEIVE A WARRANTY REGISTRATION CARD AT TIME OF PURCHASE.PLEASE FILL OUT THE CARD AND SEND IT TO RedMax / KOMATSU ZENOA AMERICA WITHIN SEVEN (7) DAYS.BE SURE TO KEEP A COPY FOR YOUR RECORDS.
  • Page 44 Telles sont les limites de la garantie. Le coût du transport de l'unité jusqu'au revendeur RedMax et depuis celui-ci sera à la charge de l'acheteur. L'acheteur ne supportera pas le coût de main d'oeuvre du diagnostic qui amène à la conclusion qu'une pièce garantie est défectueuse, si ce diagnostic est effectué...

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