Zenoah HC510DV manual

OWNER / OPERA T OR MANUAL CUT -OFF SA W 848-C8X-93A1 (60 ) HC510DV The engine exhaust from this product contains chemicals known to the State of California to cause cancer, birth defects or other reproductive harm. W ARNING Before using our products, please read this manual carefully to understand the proper use of your unit. W ARNING Diamond wheel[...]

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SAFETY FIRST Instructions contained in warnings within this manual marked with a symbol concern 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. ■ WARNINGS IN THE MANUAL This mark indicates i[...]

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 Blad[...]

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). Never modify your machine. We won't warrant the machine, if you use the remodeled machine or you don't observe the proper usage written in the[...]

 6  For safe operation and maintenance, symbols are indicated on the machine. According to these indications, please be careful not to take a mistake. (a) The port to refuel the "MIX GASOLINE" Position: FUEL TANK CAP (b) Choke will close when pulling the choke knob Position: CHOKE KNOB (c) It indicates the start (I) and stop (O) dir[...]

 7  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. This unit has been designed for use in cutting concrete products, stone and cast-iron pipe at[...]

 8  exposes the operator to Whitefinger disease. This condition produces numerous burning sensations and interferes with the ability to feel and regulate temperature. Get medical advise at once if you experience these symptoms. h. Be sure to keep this manual handy so that you may refer to it later whenever any questions arise. i. Always be su[...]

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. 3. When refilling the tank, always turn off the engine and allow it to cool down. Take a careful l[...]

 10  the other one’s presence and how to sign the danger etc. d. Fix the cutting object if it is unfixed. e. Never operate the engine without wheel guard. f. Adjust the wheel guard to deflect sparks, dust, and material away from the operator and flammable materials. g. Inspect the entire unit for loose fasteners and fuel leakage. Make sure [...]

i. Do not cut above shoulder height. j. If someone calls out while working or if you wish to continue work in another spot, or if you want to check the unit, always be sure to turn off the engine before making your next move. k. Never touch the spark plug or plug cord while the engine is in operation. Doing so may result in being subjected to an el[...]

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. ■ CHANGE OF DUST STOPPER • To apply 12 inch blades, the dust stopper[...]

■ MOUNTING OF CUTTER BLADE 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). 2. Mount a cutter blade on flange washer (B) aligning its centre hole correctly with a[...]

 14  7. Fuel ■ RECOMMENDED MIXING RATIO GASOLINE 50:OIL 1 (when using ZENOAH genuine oil) • Exhaust emission are controlled by the fundamental engine parameters and components(eq., carburation, ignition timing and port timing) without addition of any major hardware or the introduction of an inert material during combustion. • These engi[...]

7. Fuel  15  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. 5. Put a clear indication on t[...]

 16  ■ STARTING ENGINE •B efore starting the engine, check if there is any problem such as loose fitting of cutter blade or fuel leakages. •P lace 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. • As[...]

8. Operation In case of restarting immediately after stopping the engine, pull the starter knob with the choke knob pushed in (choke open). 4. Push in a decomp valve on right side of the machine. (OP3) (1) Decomp valve In case a starter rope felt to be heavy, check if the decomp valve is pushed in. 5. Place the machine on stable ground and confirm [...]

 18  In case of cold start of the engine, apply 1~2 minutes of warming up operation before use. ■ STOPPING ENGINE • In an emergency, immediately stop the engine. • Even after stopping the engine, the cutter blade continues to turn awhile by inertia. Do not touch the blade until it is fully stopped. • Do not touch a muffler or the spar[...]

 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. •W hen applying the cutter blade to a work, start with low speed to form a guide notch, and then cut with full throttle. Do not forcedly press the cutter bl[...]

 20  9. Maintenance Maintenance, replacement, or repair of the emission control device and systems may be performed by any non-road engine repair establishment or individual. • Be sure to stop the engine for check and maintenance. • Do not modify the machine nor disassemble the engine. •U se RedMax genuine or specified spare parts and o[...]

• Clogging of air filter reduces engine performances. Inside of an engine will quickly wear by dusts if an air cleaner cover is not correctly fitted or if a filter is missed, deformed, 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 e[...]

 22  In case the fuel filter is clogged or the fuel pipe is bent, engine speed may not increase or may become unstable. ■ COOLING AIR PASSAGE • 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 [...]

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. Slacken 3 pieces of flange nuts which are holding the cu[...]

 24  MA11 9. Maintenance 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. (MA11) (1) Push toward the engine (2) Bolt (3) Slac[...]

MA14 9. Maintenance 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. 4. Put the belt into the cutting head pulley. 5. Apply tension on the belt by screwing in the belt tensioner bolt to the e[...]

 26  9. Maintenance 4. Tighten the centre bolt of the idler pulley to fix the belt adjustment plate. 5. Fit the belt cover as original. ■ ENGINE ADJUSTMENT (MA15) It is dangerous if the cutter blade continues to turn even fingers are removed from the throttle lever. In case it is not solved by readjusting an idle adjust screw with following[...]

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) 9. Maintenance  27 [...]

 28  9. Maintenance ■ STARTER ROPE EXCHANGE When exchanging the starter rope, pay attention so that built-in recoil spring does not jump out. Mistake in operation may end up with injury to the eye, etc. by jumped out spring. The starter rope wears and deteriorates with usage. In case the rope becomes shaggy or partially worn, suggest exchan[...]

9. Maintenance 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. Pull the rope hard to engage the knot into a reel pit and put end of the knot into a reel notch. (MA19) (1) Notch In case the [...]

 30  9. Maintenance 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. Excessive turns of reel cause overload on the coil spr[...]

10. Storage When discharging fuel, be careful not to spill fuel and completely wipe off if spilled. Also, securely close a cap of storage tank. • 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). • During storage, make fuel tank cap loose. If it i[...]

 32  11 . T roubleshooting guide Case 1. Starting failure CHECK PROBABLE CAUSES ACTION fuel tank ➞ incorrect fuel ➞ drain it and with correct fuel fuel filter ➞ fuel filter is clogged ➞ clean carburetor adjustment screw ➞ out of normal range ➞ adjust to normal range sparking (no spark) ➞ spark plug is fouled/wet ➞ clean/dry ?[...]

12. Parts list NOTE : 1. Use KOMATSU ZENOAH genuine parts as specified in the parts list for repair and/or replacement. 2. KOMATSU ZENOAH does not warrant the machines, which have been damaged by the use of any parts other than those specified by the company. 3. When placing parts orders for repair and/or replacement, check if the model name and th[...]

12. Parts list Fig.1 CUTTER UNIT HC510DV (S/N 200101 and up)  34 [...]

Key# Part Number Description Q'ty 1 2894-61100 CASE COMP 1 2 01252-60510 • BOLT 1 3 06004-06001 • BEARING 4 4 2670-21220 • SEAL 1 5 2894-64110 SHAFT, inlet 1 6 2894-64120 PULLEY 1 7 2894-64210 FAN 1 8 2894-64250 SPACER 1 9 2894-64300 SHAFT COMP 1 10 01643-30823 WASHER 1 11 3350-43231 NUT 1 12 2894-64410 COVER, fan 1 13 2894-64420 SEAL 1 [...]

Fig.2 POWER UNIT (1) HC510DV (S/N 200101 and up)  36  12. Parts list[...]

Key# Part Number Description Q'ty 61 2810-72110 • CAP 1 62 1400-72121 • SPRING 1 63 2670-71320 • TUBE 1 64 2810-71250 • GROMMET 1 65 2670-14220 SCREW M5x20 2 66 2670-71510 CORD 1 67 T2069-71600 SWITCH ASS'Y 1 71 2670-14130 SCREW 1 72 3699-90512 SPARKPLUG NGK BPM8Y 1 73 2810-21270 PLATE 1 74 0260-30410 SCREW 2 75 2884-75000 STARTER[...]

12. Parts list Fig.3 POWER UNIT (2) HC510DV (S/N 200101 and up)  38 [...]

Key# Part Number Description Q'ty Key# Part Number Description Q'ty 1 2884-31110 COVER, cylinder 1 2 2670-14320 SCREW M5x14 5 3 2884-82603 PLATE COMP 1 4 2884-82630 • SEAL 1 5 2884-82640 • SEAL, plate 1 6 2670-14320 SCREW M5x14 4 7 2884-83100 CLEANER COMP 1 8 2884-83121 • ELEMENT 1 9 2884-83301 PLATE ASS'Y 1 10 2884-83320 • B[...]

Key# Part Number Description Q'ty 1 848-C8X-8101 CARBURETOR ASS’Y (WT-648A) – 2 3306-81380 • SCREEN 1 3 2810-81120 • COVER 1 4 3310-81130 • SCREW 1 5 T2050-06020 • GASKET KIT 1 6 3310-81230 • LEVER 1 7 3310-81240 • SCREW 1 8 2841-81270 • SPRING 1 9 3310-81250 • PIN 1 10 3310-81280 • COVER 1 11 3356-81310 • INLET VALVE 1[...]

 41  Key# Part Number Description Q'ty 1 2894-92310 PLATE for 12" 1 2 2894-68310 CLUMP 1 3 2894-68210 DUST HOSE 1 4 2894-68110 DUST BAG 1 5 3388-92110 MASK 1 6 6242-92110 GOGGLE 1 7 2894-91000 TOOL SET 1 8 3345-91110 • BAG 1 9 3320-91140 • PLUG WRENCH 1 10 3582-91330 • BAR 1 11 2670-91150 • DRIVER 1 12 3388-91310 • WRENCH [...]

The California Air Resources Board and KOMATSU ZENOAH are pleased to explain the emission control system warranty on your 2005 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. KOMATSU ZENOAH must warrant the emission control system on[...]

EMISSION-RELATED PARTS, FOR TWO (2) YEARS FROM THE DATE OF ORIGINAL DELIVERY OF THE UNIT, RedMax / KOMATSU ZENOAH AMERICA, INC., THROUGH ANY RedMax DEALER, WILL REPAIR OR REPLACE, FREE OF CHARGE, FOR THE ORIGINAL AND EACH SUBSEQUENT PURCHASER, ANY PART OR PARTS FOUND TO BE DEFECTIVE IN MATERIAL AND/OR WORKMANSHIP. EMISSION-RELATED PARTS ARE: THE CA[...]

Pièces en rapport avec les émissions de gaz d'échappement : RedMax / KOMATSU ZENOAH AMERICA INC., par l'intermédiaire de n'importe quel revendeur RedMax, réparera gratuitement ou remplacera gratuitement pour l'acheteur initial et chaque acheteur successif toute(s) pièce(s) se révélant de constitution et/ou de montage dé[...]