Instruction/ maintenance manual of the product EK7650H Makita
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PRODUCT C ONCEPT AND MAIN APPLICA TIONS S pecification P 1/ 19 Models No. EK7650H, EK7651H Description Power Cutters 305mm (12"), 355mm (14") Models EK7650H and EK7651H are the world’ s first 4-stroke power cutters.
[1] NECESSARY REPAIRING TOOLS Description Code No. Use for Retaining ring pliers ST-2N for External ring 1R003 press-fitting Ball bearing 6203LLU into Cutting device Bearing setting pipe 25-17.
Description Item No. Use for Amount a little a little a little Lubricant 4-cycle Engine oil (API grade SM class) 4-cycle Engine oil (API grade SM class) Makita grease N No.
Hood section V belt 5-800 Cutting device [4] DISASSEMBLY/ASSEMBLY [4]-1. V-belt 5-800, Cutting device R epair P 4 / 19 (1) Loosen two M8 Hex nuts slightly with Wrench 13-16 of a standard accessory. ( Fig. 2 ) (2) Release the tension on V-belt 5-800 by turning M6 Tensioning screw counterclockwise with Screwdriver.
[4] DISASSEMBLY/ASSEMBLY [4]-1. V-belt 5-800, Cutting device (cont.) R epair P 5 / 19 Assemble their parts by reversing the disassembly procedure. (1) Assemble one of Ball bearing 6203LLU to Cutting holder, then snap Retaining ring R-40 into the groove of Cutting device to secure the bearing.
[4] DISASSEMBLY/ASSEMBLY [4]-2. Starter assembly R epair P 6 / 19 (1) Loosen three M5x19 - Hexalobular socket head bolts, then remove Starter assembly. ( Fig. 10 ) (2) When Starter rope is not broken; 1. Make a slack of Starter rope then hook it on U-shaped notch of Reel.
[4] DISASSEMBLY/ASSEMBLY [4]-3. Clutch, Ratchet R epair P 7 / 19 (1) Remove Cutting device. Refer to the clause of [4]-1 . (2) Loosen three M5x12 Hexalobular socket head bolts, then remove Clutch cover together with Starter assembly.
[4] DISASSEMBLY/ASSEMBLY [4]-4. Flywheel, Ignition coil R epair P 8 / 19 (1) Loosen four M5x30 - Hexalobular socket head bolts, then remove Fan cover. ( Fig. 22 ) (2) Remove M10 Flange nut from Crankshaft by turning counterclockwise by using Cordless impact driver with 14mm flats width Socket bit.
[4] DISASSEMBLY/ASSEMBLY [4]-4. Flywheel, Ignition coil (cont.) R epair P 9 / 19 DISASSEMBLING IGNITION COIL Fig. 27 Fig. 28 Fig. 29 Fig. 30 Fig. 31 (1) Loosen M6x15 Thumb screw, then remove Top cover. ( Fig. 27 ) (2) Loosen four M5x40 Hexalobular socket head bolts, then remove Filter cover complete ( Fig.
P 1 0 / 19 [4] DISASSEMBLY/ASSEMBLY [4]-5. Carburetor R epair Fig. 32 Fig. 33 Fig. 34 Fig. 35 Fig. 37 Fig. 36 5.5x20 Hexalobular tapping screw (1) After completion of the steps (1) and (2) on [4]-4 , remove Grip cover by loosening 5.5x20 Hexalobular tapping screw.
[4] DISASSEMBLY/ASSEMBLY [4]-5. Carburetor (cont.) R epair P 1 1 / 19 ADJUSTMENT OF CARBURETOR AFTER REPLACEMENT ASSEMBLING Fig. 38 Fig. 39 Fig. 40 Pull throttle lever fully after a while engine running at idle position. When there is a problem with the engine quick acceleration, adjust H needle ( Fig.
[4] DISASSEMBLY/ASSEMBLY [4]-6. Throttle lever R epair P 1 2 / 19 DISASSEMBLING DISASSEMBLING Fig. 42 Fig. 43 Fig. 44 (1) Remove Pin 5 from the grooves on Tank complete by levering it up with a slotted screwdriver. ( Fig. 42 ) (2) Expand the hinge portion for Throttle lever on Tank complete with 1R003.
[4] DISASSEMBLY/ASSEMBLY [4]-7. Engine block (cont.) R epair P 1 3 / 19 DISASSEMBLING Fig. 46 Fig. 47 (6) Remove four M6x30 Hexalobular socket head bolts that fasten Front handle, Tank complete and Engine. ( Fig. 46 ) Engine block can be removed. ( Fig.
[4] DISASSEMBLY/ASSEMBLY [4]-8. Engine R epair P 1 4 / 19 DISASSEMBLING Fig. 48 Fig. 49 (1) Remove Clutch complete and Clutch drum. Refer to [4]-3 . (2) Remove Flywheel. Refer to [4]-4 . If necessary, remove Ignition coil. (3) Loosen five M6x25 Hexalobular socket head bolts, then remove Cutting arm from Cylinder block complete.
[4] DISASSEMBLY/ASSEMBLY [4]-8. Engine (cont.) R epair P 1 5 / 19 DISASSEMBLING Fig. 54 Note : Cam gear assembly functions as automatic decompression valve system. Valve is slightly open to release the compressed air in Engine at the starting time, before moving fly weight by centrifugal effects.
[4] DISASSEMBLY/ASSEMBLY [4]-8. Engine (cont.) R epair P 1 6 / 19 DISASSEMBLING Fig. 58 M6x30 Hexalobular socket head bolt (8 pcs.) Cylinder block Slotted screwdriver Cylinder block Top ring Second ring Oil ring Piston Piston pin Ring spring 12 Crankshaft complete* Flat washer 41 Oil seal L *The components cannot be supplied individually.
[4] DISASSEMBLY/ASSEMBLY [4]-8. Engine (cont.) R epair P 1 7 / 19 Note: Be sure to apply Makita grease N No.2/ 4-cycle engine oil in accordance with [3] LUBRICANT APPLICATION . (1) Connect Piston with Crankshaft complete by inserting Piston pin into place; there is no front/back to Piston.
[4] DISASSEMBLY/ASSEMBLY [4]-8. Engine (cont.) R epair P 18 / 19 DISASSEMBLING Fig. 68 (8) Assemble Cam gear section by reversing the disassembly procedure. (Refer to Fig. 53 and 52 .) (9) Move Piston to the upper dead point in Cylinder block by turning Crankshaft slowly and carefully by hand.
[5] Tightening torque specifications R epair P 19 / 19 [4] DISASSEMBLY/ASSEMBLY [4]-9. Ignition system (cont.) CHECKING SPARK PLUG (1) Remove Plug cap from Spark plug, then Spark plug from Cylinder head complete with the supplied socket wrench. Note: If the electrodes of Spark plug are wet, wipe them with a rag then dry them with an air blower.
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If you have not bought Makita EK7650H yet, this is a good time to familiarize yourself with the basic data on the product. First of all view first pages of the manual, you can find above. You should find there the most important technical data Makita EK7650H - thus you can check whether the hardware meets your expectations. When delving into next pages of the user manual, Makita EK7650H you will learn all the available features of the product, as well as information on its operation. The information that you get Makita EK7650H will certainly help you make a decision on the purchase.
If you already are a holder of Makita EK7650H, but have not read the manual yet, you should do it for the reasons described above. You will learn then if you properly used the available features, and whether you have not made any mistakes, which can shorten the lifetime Makita EK7650H.
However, one of the most important roles played by the user manual is to help in solving problems with Makita EK7650H. Almost always you will find there Troubleshooting, which are the most frequently occurring failures and malfunctions of the device Makita EK7650H along with tips on how to solve them. Even if you fail to solve the problem, the manual will show you a further procedure – contact to the customer service center or the nearest service center
