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6-2-2

 

Assembling 

 

[1]  Assemble by reversing the disassembly procedure. 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Fig. 6-2-2-1 

[2]  Apply Makita grease FA No.2 a little on the 

outer circumference of Cock and O-ring 9.   

Fig. 6-2-2-2 

[3]  Insert Cock into Cock body and turn it with pliers as shown below, 

and assemble Cock lever with 4x18 Tapping screw. 

 

O-ring 9 

Cock 

(1) 

(2) 

(3) 

4x18 Tapping screw 

Cock lever 

Fig. 6-2-2-3 

[4]  Assemble Cock section to Straight pipe. 

Straight pipe 

Cock section 

 

 

 

 

 

 

 

 

 

 

 

10 / 41 

Summary of Contents for PM7651H

Page 1: ...by 75 6mL 4 stroke engine and developed based on the current model PM7650H The modifications from the current model PM7650H are as follows Compliance with EU standards Lock off button on the handle Wi...

Page 2: ...nd pipe 450 2 Flat pipe 2 Nozzle 0 8 2 Tube 10 500 2 1 With engine oil contained for some countries 2 Depends on destinations Note The standard equipment may vary by country or model variation Optiona...

Page 3: ...mbling 18 6 8 Frame section 19 6 8 1 Disassembling 19 6 8 2 Assembling 19 6 9 Ignition system 20 6 9 1 Checking plug cap 20 6 9 2 Checking Spark plug 20 6 9 3 Checking of Ignition coil 21 6 9 4 Checki...

Page 4: ...ne block 37 6 15 1 Cylinder head section 37 6 15 2 Adjustment of valve clearance 39 6 15 3 Assembling of Muffler exhaust and Insulator complete 39 6 16 Final check 40 7 TIGHTENING TORQUE SPECIFICATION...

Page 5: ...k if it moves smoothly without abnormal noise by manually turning the crankshaft After completion of reassembly check for loose parts or abnormal noise and vibration by manually turning the crankshaft...

Page 6: ...little Outer circumference of O ring 93 Elbow Spiral spring Any lubricants are available Nozzle cap Top adapter Diffusion cover Intake valve Exhaust valve Retainer Cotter Compression spring 11 Cylinde...

Page 7: ...remove grease from the mating surface of Crankcase to Cylinder block and then apply ThreeBond 1215 or 1216 as shown below Oil route Note ThreeBond 1215 or 1216 should not be come into here Surface wh...

Page 8: ...g 28 from Sleeve 25 Top adapter Sleeve 25 4x20 Tapping screw Sleeve 25 O ring 28 Fig 6 1 1 4 6 Remove Nozzle 4 5 from Nozzle adapter complete with a slotted screwdriver Nozzle 4 5 Fig 6 1 1 5 7 Remove...

Page 9: ...as follows Cock body Strainer case 3x16 Tapping screw 2 pcs O ring 12 Cap hose Joint strainer Pliers Tube 10 500 Hose clamp 14 Hose clamp 14 Hose clamp 14 Tube 10 750 Fig 6 2 1 3 3 Remove 4x18 Tapping...

Page 10: ...le on the outer circumference of Cock and O ring 9 Fig 6 2 2 2 3 Insert Cock into Cock body and turn it with pliers as shown below and assemble Cock lever with 4x18 Tapping screw O ring 9 Cock 1 2 3 4...

Page 11: ...p 76 Swivel pipe complete Tube 10 750 Straight pipe Swivel pipe complete Hose clamp 76 Flexible pipe complete Fig 6 3 1 4 5 Loosen M5x30 Thumb screw and remove Control lever assembly from Swivel pipe...

Page 12: ...Disassembling Fig 6 4 1 1 1 Remove three M5x20 Pan head screws and remove Recoil M5x20 Pan head screw 3 pcs Recoil Fig 6 4 1 2 2 Remove four 5x20 Tapping screws and remove Engine cover complete 5x20...

Page 13: ...sure to connect the black one to Carburetor and the transparent blue one to Primer pump Fig 6 4 1 4 When mounting Engine cover be careful not to bend nor pinch the breather pipe Fig 6 4 1 6 Do not for...

Page 14: ...1 2 5 Hold Cable tube to Elbow with a new Wire band that holds Fig 6 5 1 1 2 Remove Control cable and ON OFF switch cords from the hook of Volute case 2 then disconnect the bullet terminal of ON OFF...

Page 15: ...ull out Pin 5 E 4 Stop ring Band R L Fig 6 6 1 4 4 Remove five M5x12 Pan head screws remove Cushion 5 Remove two M6x30 Pan head screws remove Tank holders and Tank complete Note Be careful not to lose...

Page 16: ...7 10 Remove two M5x12 Pan head screws and remove Mixing body upper from Mixing body lower Fig 6 6 1 7 11 Remove Check valve and Flat washer 10 from Mixing body lower Fig 6 6 1 7 Note Be sure not to l...

Page 17: ...Frame holder M6x20 Pan head screw 2 pcs Frame holder Lower frame holder Compression spring 17 Frame complete Fig 6 7 1 3 5 Remove three 5x20 Tapping screws and remove Fan guard 6 Remove nine 5x20 Tap...

Page 18: ...holder from Volute case 2 10 Remove four M6x40 Hex socket head bolts and remove Impeller Fig 6 7 1 7 11 Remove six M6x30 Hex socket head bolts and remove Volute case 2 and Engine 12 Remove Base L and...

Page 19: ...8 1 Disassembling 6 8 2 Assembling Assemble by reversing the disassembly procedure Fig 6 8 1 1 Remove six M4x25 Pan head screws and remove Guard from Frame complete Guard Frame complete M4x25 Pan hea...

Page 20: ...terminal or metal part of the machine Spark plug Plug cap spring located in Plug cap Ignition cable Ignition coil Plug cap Plug cap spring High voltage cable Spray lubricant WARNING When a spark is p...

Page 21: ...s of 1R181 Cylinder fin Cable from Ignition coil Note Some products have this projection on the top Spark window Contents of 1R181 Note When you find it difficult to see the sparks in Spark window adj...

Page 22: ...n coil may break Spark window 3 Start Engine and check that the sparks are found out continuously during idling after that while accelerating the rpm of engine to the maximum gradually Note Some model...

Page 23: ...9 6 1 1 Insert 0 3mm leaf of Feeler gauge set 1R366 between Ignition coil and the magnet of Flywheel complete Ignition coil will be attracted to the magnet through the Feeler gauge Then without removi...

Page 24: ...wise Note Tighten two M6 bolts evenly Hex socket bit 14 Impact driver M10 Flange nut 1R364 Center bolt M6 bolt 2 pcs Fig 6 9 8 1 1 Remove grease from Crank shaft assembly 2 After aligning the key slot...

Page 25: ...Reel Starter knob Starter case complete U shaped notch Starter rope 5x12 Tapping screw Swing arm 2 pcs Reel 1 If Spiral spring pops out of Reel put it back in place by setting the outer end of Spiral...

Page 26: ...ined Inner end of Spiral spring Slit Shaft portion of Starter case complete Swing arm Reel Slot of Reel Collar Fig 6 10 2 6 7 Hook Starter rope on the U shaped notch of Reel Then while pulling Starter...

Page 27: ...ring diaphragm cover Metering diaphragm and Metering diaphragm gasket by unscrewing four Screws Fig 6 11 2 1 Note If Metering diaphragm gasket is sticking on the adjacent part remove it with care as i...

Page 28: ...loosen the idle adjusting screw then remove two M3x10 Pan head screws Fig 6 11 2 1 7 Make sure that Inlet screen is not clogged then set it back in place 8 Spray carburetor cleaner in all the fuel lin...

Page 29: ...is no vacuum leak 1R127 Carburetor Fig 6 11 5 1 1 With two M5x70 Pan head screws fasten the following five parts to Cylinder head complete Carburetor gasket large Carburetor Plate 31 Carburetor gaske...

Page 30: ...leaner plate into the slot ofAir cleaner cover complete Air cleaner element Air cleaner cover complete Air cleaner plate M5x25 Pan head screw Locking tab Slot Fig 6 11 6 1 1 Start the engine wait for...

Page 31: ...h the switch ON and there will be continuity with the switch OFF ON OFF Control lever 1R402 Fig 6 13 1 2 2 Before inserting Tube guard 20 160 to Carburetor put Tube guard on three tubes Fig 6 13 1 1 1...

Page 32: ...t Note The bolts are thread lock type screws Because adhesive is applied to two M5x25 Hex socket head bolts with WR and three M6x18 Socket head bolts use a Hex L wrench to loosen or remove them ThreeB...

Page 33: ...ad bolts and remove Oil case from Cylinder block set Oil case M5x25 Hex socket head bolt 5 pcs Cylinder block set Fig 6 14 1 1 6 10 Loosen M4x10 Socket head bolt and remove Retainer plate And then rem...

Page 34: ...2 1 3 Install Oil ring in the grooves of Piston Side rail first Spacer next then the other Side rail Important Be sure to fit the three rings with the ring gaps at 120 degrees to one another as shown...

Page 35: ...where ThreeBond 1215 or 1216 should be applied Fig 6 14 1 2 3 6 Apply 4 stroke engine oil to the contact surface of Piston and Crank shaft section as shown below While holding Piston ring set assembl...

Page 36: ...M4x10 Socket head bolt Oil case gasket Lead valve Note Face the chamfered corner toward the oil filter opening Retainer plate Fig 6 14 1 2 6 9 Bend Oil tube to the lead valve side Oil tube Fig 6 14 1...

Page 37: ...nd 1R389 and remove two Retainers Compression springs 11 Intake valve and Exhaust valve Note If Cotter is fixed firmly apply spray lubricant to it And set an offset wrench to it then tap it to remove...

Page 38: ...to Crankcase Piston comes to the upper dead point in Cylinder block set M10 Flange nut Crankcase Marking Oil case 6 Cam gear gasket Note Face the convex side to Cam gear cover 5 Tighten five M6x35 he...

Page 39: ...ded value 0 1mm After adjustment tighten M5 Hex nuts while slightly holding Adjusting screws to the screwed direction and pull out the feeler gauge 3 Turn Flywheel a few times to check that the cleara...

Page 40: ...e full after idling for one minute smooth acceleration can be obtained without engine stalling When you tilt left and right back and forth about 45 on condition that engine remains idle the engine doe...

Page 41: ...shaft assembly M8 Pulley 9 0 11 0 1 Oil cap assy Crankcase Oil cap assy 0 4 0 7 1 Choke plate Choke lever 4x12 Tapping screw 0 9 1 1 1 Air cleaner cover complete Cleaner plate assembly M5x25 Pan head...

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