Makita PM7650H, Technical Information

Page 1: ...with nozzle 4 with Straight pipe 330 13 3 29 3 Recoil starter with mechanical decompression 16 0 52 Max air velocity m s Max air volume 3 m h 85 845 7 400 2 800 Fuel Straight gasoline 1 CONCEPT AND MA...

Page 2: ...ed torque as shown in 4 16 Tighteningtorquespecifications Each time after you mounted a main part of the engine such as the piston check if it moves smoothly without abnormal noise by manually turning...

Page 3: ...by turning it counterclockwise Fig 1 4 Remove Sleeve 25 from Top adapter by unscrewing 4x20 Tapping screw Fig 2 5 Remove O ring 28 from Sleeve 25 Fig 3 6 Remove Nozzle 4 5 from Nozzle adapter complet...

Page 4: ...removed from Cock body Fig 9 6 Remove O ring 18 from Body cover Fig 9 7 Remove Valve rod from Cock body then remove O ring 9 and O ring 12 from Valve rod Fig 9 Hose clamp 14 Tube 10 500 Tube 10 750 4x...

Page 5: ...emove Control lever assembly from Swivel pipe complete by unscrewing M5x25 Pan head screw Fig 11 4 Remove Flexible pipe from Elbow by removing Hose clamp 100 Fig 12 Fig 12 DISASSEMBLING ASSEMBLING Ass...

Page 6: ...ove Recoil complete by unscrewing three M5x20 Pan head screws Fig 13 2 Remove Engine cover by unscrewing four 5x20 Tapping screws Fig 14 DISASSEMBLING Fig 13 Recoil complete M5x20 Pan head screw 3 pcs...

Page 7: ...Tube assembly to Carburetor and Primer pimp do not confuse them Be sure to connect the black one to Carburetor and the transparent blue one to Primer pump Fig 15 When mounting Engine cover be careful...

Page 8: ...of Swivel and then hook the cable end on Swivel Fig 23 2 Put Control cable in the space between Volute case and Air cleaner cover complete Fig 22 3 Fix Control cable and the high voltage cable of Ign...

Page 9: ...e Tube 10 300 from Pressure pipe by removing Hose clamp 14 Fig 25 3 Remove Band R and Band L from Tank complete by removing four E 4 Stop rings with small pliers then by sliding four size 5 Pins Fig 2...

Page 10: ...ose clamp 14 Figs 30 31 9 Separate Upper mixing body from Lower mixing body by unscrewing two M5x12 Pan head screws Fig 31 10 Remove Washer 10 and Check valve from Lower mixing body Be careful not to...

Page 11: ...ig 33 5 Remove Fan guard from by unscrewing three 5x20 Tapping screws Fig 34 6 Remove Volute case 1 from Volute case 2 by unscrewing nine 5x20 Tapping screws and two M5x65 Pan head screws Elbow is als...

Page 12: ...e case 2 by unscrewing four M6x40 Hex socket head bolts Fig 37 11 Remove Volute case 2 from the engine section by unscrewing six M6x30 Hex socket head bolts Fig 38 12 Remove Base L and Base R from Vol...

Page 13: ...9 Framesection P 13 26 Remove Guard from Frame complete by unscrewing six M4x25 Pan head screws Fig 39 DISASSEMBLING ASSEMBLING Assemble by reversing the disassembly procedure Fig 39 Guard M4x25 Pan...

Page 14: ...lug cap spring is properly connected to Ignition cable If not connect them properly Also check Plug cap for any crack If Plug cap is cracked replace it with new one Insert Plug cap spring in the cente...

Page 15: ...threads of Spark plug to a proper metal part of the engine 6 With Stop switch on pull Recoil starter knob gently and check for spark Note It is hard to see the spark in a bright location Therefore be...

Page 16: ...lete Then remove Flywheel complete by turning the center bolt of 1R364 clockwise with a Phillips screwdriver of a proper size Fig 46 Note Tighten two M6 bolts evenly MOUNTING FLYWHEEL COMPLETE 1 Remov...

Page 17: ...49 Fig 48 Fig 49 U shaped notch Reel Starter case complete 5x12 Tapping screw Swing arm 2 pcs Starter rope knot of Starter rope Reel ASSEMBLING RECOIL STARTER 1 If Spiral spring pops out of Reel put...

Page 18: ...not properly set in place if the rotation of Reel is slow after the screw is fastened In this case repeat steps 5 and 6 until normal rotation of Reel is obtained 7 Hook Starter rope on the U shaped n...

Page 19: ...re that the tip of Inlet needle is neither worn nor deformed Fig 59 Note The inner parts are not available individually If you need some of the inner parts order Pump body assembly 5 When mounting Con...

Page 20: ...te 31 Carburetor gasket small Air cleaner plate 2 Connect two Tubes to Carburetor Fig 63 Then connect Return tube to Cylinder and Breather pipe to Air cleaner plate Fig 64 3 Mount Air cleaner element...

Page 21: ...If Stop switch functions properly there will be no continuity with the switch ON and there will be continuity with the switch OFF FUEL TUBE ROUTING 1 Mount Filter onto the end of the black tube of Tu...

Page 22: ...EMBLING ENGINE BLOCK Piston pin Ring spring 12 Piston Fig 70 Fig 70 Crankcase Piston Crankshaft complete Cylinder head Cylinder block 1R286 See 4 10 Ignitionsystem for removal of Spark plug Ignition c...

Page 23: ...le not on the side face of Top ring You can face the large diameter of Second ring by placing Second ring with the white marking on your right and with the ring gap near you as shown in Fig 74 If both...

Page 24: ...onto each Push rod Note Make sure that one end of Push rod is firmly held in the hole of Cam lifter and the other end also firmly in the hole of Rocker arm assembly 4 Loosen Adjusting screw of Rocker...

Page 25: ...et head bolt 4 5 6 0 Air cleaner plate Insulator complete M5x70 Pan head screw 2 0 4 0 Pulley Crankshaft complete Pulley 9 0 11 0 Oil cap assembly Crankcase Oil cap assembly 0 4 0 7 Choke plate Choke...

Page 26: ...Recoil Engine cover complete M5x20 Pan head screw 1 8 3 5 Nozzle cap Nozzle adapter complete 3x10 Tapping screw 0 3 0 5 Nozzle 4 5 Nozzle adapter complete Nozzle 4 5 0 7 1 0 Sleeve 25 Top adapter 4x20...