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[3] DISASSEMBLY/ASSEMBLY 

[3]-1. Warning

 

There is a risk of a burn injury immediately after the engine is stopped. So wait until the engine has completely cooled 

  before performing the work. 

Completely remove all fuel from the inside of Fuel tank and Carburetor before performing the work. [No open flames] 

Remove the engine oil before performing the work. 

Perform the work on a solid workbench in a place where dust, dirt, etc. will not enter inside. 

Remember how and where the parts were assembled when disassembling the product and take care not to make a mistake 

  when assembling the product. 

Prepare boxes so that you can store the parts in groups when disassembling the product. 

Handle the removed parts carefully and clean and wash them properly. 

If a bolt or screw cannot be loosened, do not apply excessive force. Use an impact driver or similar tool. 

Be sure to tighten bolts and screws to the specified tightening torque values. 

After assembling the main parts, turn the engine by hand to check that there is no abnormality or looseness.

 

 

[3]-2. Blower Section (Band Completes L and R, Frame and Fan) 

Disassembly 

(1) Remove Band completes L and R and Hip belt. Remove each of the fixing parts as shown in 

Fig. 1

 

 

 

 

 

 

 

 

 

 

 

 

Fig. 1 

Pull out the band as shown above. 

Position the buckle vertically 
and then remove it. 

Turn the center of Lock rivet with 
a Phillips screwdriver to loosen it a 
little and then remove it. 

 

Makita Corporation

 

 

Summary of Contents for EB7650TH

Page 1: ...ed min rpm at max output power 7 100 at no load 2 800 Engine oil SAE10W 30 Class SF or higher ofAPIClassification 4 strokeengine oil forautomobile Carburetor Diaphragm Starting system Easystart Spring...

Page 2: ...SSARYREPAIRINGTOOLS Code No Description Use for 1R005 Retaining ring pliers RT 2N Attaching removing Cotter used together with 1R389 1R070 Tachometer Engine speed check 1R181 Ignition checker Diagnosi...

Page 3: ...g diagrams when assembling the parts ApplyMakita grease NNo 2 tothe sealing lips ofOilseals and outer circumference ofOrings 17 and 20 oftheanti icing valve portion indicated by ApplyMakita grease NNo...

Page 4: ...repareboxes so that you can store the parts in groups when disassembling the product Handle theremoved parts carefullyand clean and wash themproperly Ifa boltorscrewcannot beloosened do not applyexces...

Page 5: ...ontrolcable e fromCarburetor f Right photo ofFig 5 and then remove the integrated Controlcable e and Lead unit fromFront volute case h In the case of EB7650WH remove Control cable e fromClip g Centerp...

Page 6: ...tiondamper counterclockwise and then remove them Fig 6 9 Looseneleven5x20Tapping screws and then remove Rear volute case i Remove Elbow j together with it Fig 7 10 Loosen the four M6x25 Hexsocket head...

Page 7: ...as shown in Fig 9 so that you can rotate Elbowfromthe front ofthe machine and then secure Rear volutecase b withelevenTapping screws 5 Fig 7 4 Attach Frame then connect Carburetorto Controlcable then...

Page 8: ...artsbyreversingthe disassemblyprocedure shown in Fig 1 while taking care not tomix themup Twist the bands Band complete R by90 degreesclockwise and Band complete Lby90 degreescounterclockwise viewed f...

Page 9: ...h Spiral tube6 100 then cover the tube ofBreather e with the coil spring 8 and then slideTube guard20 102 f all the way to cover thetubes Fueltank Coilspring8 e Slide f alltheway tocoverthetubes Spira...

Page 10: ...oveThrottlelink e disconnect the connectorofSwitch unit and thenreplace Switch unit 5 Loosen M4x18Hex sockethead boltand removeThrottle leverB f Fig 16 Assembly AttachThrottlelink e at theposition sho...

Page 11: ...connector c ofStop switch wire and then pull out Control cable b Lead unit and Corrugated tube d Fig 18 4 Loosen M6x25Hex sockethead boltand then removeArmbase e 5 DisassembleArmbase e andArmbase hold...

Page 12: ...intoArmbase g while aligning the flats ofthe two parts Fig 21 4 Pass Control cable e Lead unit a and Corrugated tube through at theposition indicated in theright photo ofFig 18 5 InsertArmrubbers f th...

Page 13: ...d then remove Muffler gasket b and Exhaust port spacer c Fig 22 3 Refer to 3 6 Carburetor page 18 and thenremove Carburetor 4 Remove Camgear cover d Do notremove Pulley e oryou will have to turn theen...

Page 14: ...ove two M5x25 Hex socket head bolts securing Insulator with 1R229 At this time do notloosen the lower hex socket head bolt Fig 25 9 Remove Plug cap m and then disconnect thetwo tubes n with 1R311 Fig...

Page 15: ...move Cotter v with a bitor thelike u magnetized with 1R288 Fig 29 13 Remove Intake valve x andExhaust valve y to replaceorclean them Fig 30 s t v 1R389 1R005 u DisassemblyofRockerarmis prohibited Repl...

Page 16: ...e alignment mark on Camgear b1 and thatofCrankcase b2 then assemble themand then attach Camgear cover Fig 32 Pleasenotethat the engine speed will not increase ifeven oneofthe gear teethisnot aligned I...

Page 17: ...gap and then fullytighten Confirmthat a 0 15 mmleafofthe feeler gauge cannot be inserted 6 ApplyThreeBond 1342 or Loctite 243 to threeM6x18 Hex socket head boltsfor securing Muffler and five M6x35Soc...

Page 18: ...rburetor can bedisassembled as shown in Fig 40 A Adjust screw B Cable adjust nut M6 C Throttle assembly D Carburetor E Conical compression spring 5 9 F Pump gasket G Inlet screen H Metering diaphragm...

Page 19: ...at idling and full throttle and thatthe specified rotation speeds referto 3 10 Completion Inspection CheckPoints page28 areachieved after assembly 3 Refer to Fig 42 for theposition to connect each tu...

Page 20: ...bes are notpushing against Carburetor gasket large b 5 Connect the tubeswith Hosejoint d oriented as shown in Fig 44 45 10 Thetubesshould notpushagainst b b To Rockerarmchamber 1 0 mmorless Thegap sho...

Page 21: ...b is screwed onto Crankshaft so as to prevent deformation ofthe external male thread Woodruffkey4 will come offso take care notto lose it Fig 46 3 8 Ignition System Use 1R181 forIgnition coildiagnosis...

Page 22: ...arPortion page13 and then separate theengine sectionfromthe blower section 4 Remove Engine cover and Fuel tank and then remove Ignition coil Assembly 1 Align the positions ofthe magnet ofFlywheel a an...

Page 23: ...e bolts in the ordershown in Fig 50 3 Remove three M6x18 Hex socket head bolts a and then remove Muffler gasket b and Exhaust port spacer c Fig 51 4 Loosen two M5x25 Hex socket head boltsand one M5x14...

Page 24: ...ig 54 Crankcase h is stuck to Cylinderblock g with liquid gasket Inserta slotted screwdriver into the fourslots in the mating surface of Cylinder block and Crankcase and turn it to prythemapart Please...

Page 25: ...profileand has no top and bottomas both sides are the same Second ring c hasataper faceprofile with larger bottomthan top and so orientation matters Attach a newsecond ring so that the white paint d m...

Page 26: ...e and be careful not to allowit to fall offin assembling Crankcase Fig 51 5 Refer to 3 4 Engine Section RockerArm Valve Portion andCamgearPortion page13 and then assemble Camgear portion and attach Ca...

Page 27: ...o ofVolute case as shown in Fig 62 12 Connect Controlcable to Carburetor and connect the lead wire ofStop switch to Ignition coil 13 Insert Controlcable corrugated tubeand thebullet terminal in the s...

Page 28: ...oil starter 3 Does the engine speed increase smoothlyafter idling forabout 1 minute Theengine speed should be2800 to 3000 min 1 at idlingand 7000 to 7200 min 1at maximumspeed 4 Check that the rotorcon...

Page 29: ...Switch unit Earth terminal Black Black Black Black Black White Black Lead unit Lead unit Ignition coil Switch unit Earth terminal Black Black Black Black Black Black Lead unit Lead unit 1 1A EB7650WH...

Page 30: ...it in the grooveofFront volute case EB7650TH Earth terminal Control cable Lead unit Corrugated tube Earth terminal M5 10 Hex nut Hook the earth terminal ofLead unit in the grooveofM5 10 Hex nut Wiring...

Page 31: ...ead wire holders Switch unit Stop switch Place Connectors and theslack of lead wires oflead unit in this space Fix the lead wires ofLead unit in this Lead wire holder Place the slackofthe lead wires o...

Page 32: ...Fig D 5 Specifications without Line filter Forcountriesand areas where noise suppression is notrequired byregulation Earth terminal Lead unit Corrugated tube Control cable Earth terminal M5 10 Hex nut...

Page 33: ...n Line filter Allowthelead wireof Leadunit to have some slack whenroutingit here PlaceLine filter andthebullet terminals in thisspace Earth terminal Lead unit Corrugated tube Control cable Earth termi...

Page 34: ...terminal 1 must be routed between RibAand the wall ofArmcover Switch terminal 1 RibA Fix the lead wires of Lead unit Stop switch in these lead wire holders Place Connectors between Rib B and Rib C Fix...

Page 35: ...ilcase Crankcase 4 5 6 5 M5 25 HexsocketheadboltW SW 5 5 Cylinderhead Cylinder 10 0 14 0 M6 35 Hexsocketheadbolt 5 6 Flywheel 35 0 40 0 M10 Nut 1 7 Ignitioncoil Crankcase 2 3 2 7 M4 20 Hexsocketheadbo...

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