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[4] DISASSEMBLY/ASSEMBLY

[4]-5. Trimmer head ass’y

(1) Remove Trimmer head ass’y from Pipe.

(2) Turn the machine upside down. Loosen six M4x16 Hex socket 

      head bolts and then remove Under cover. (

Fig. 12

      Remove Plate and Gasket from the upper side (viewed from 

      Under cover installation side) in Gear housing complete.

      (

Fig. 12

)

(3) Remove Connecting rod and Spur gear 43 from the upper side 

      in Gear housing complete. (

Fig. 13

)

(4) After sliding Blade cover from the base of Shear blade ass’y, 

      loosen two M5x25 Hex socket head bolts and then remove 

      Seal and Shear blades. (

Fig. 14

      Be careful to the shear blades.

      Remove Connecting rod and Plate from Gear housing complete. 

      (

Fig. 14

)

Note

: Connecting rod and plate on the lower side in Gear housing 

           are the same as those on the upper side.

(5) Remove Retaining ring S-8 with 1R291 and separate Spur gear 

      24. Remove Retaining ring R-26 with 1R291. (

Fig. 15

)

(6) Remove M6-10 Hex lock nut with Box driver 10-16 and 

      Wrench 4 supplied as standard equipment (

Fig. 16

), and 

      separate M6x85 Hex socket button head bolt from Joint. 

      Remove Gear housing section from Joint section. (

Fig. 17

 

M4x16 Hex socket head bolt (6 pcs.)

M5x25 Hex socket head bolt (2 pcs.)

Under 

cover

Fig. 12

Fig. 14

Fig. 13

Fig. 15

Plate

Blade cover

Gasket

Connecting rod

Seal

Holder

Plate

Connecting rod

Retaining ring S-8

Retaining ring R-26

Spur gear 24

Spur gear 43

Fig. 16

Fig. 17

Wrench 4

Joint

M6-10 Hex lock nut

Box driver 10-16

Gear housing 

complete

Gear housing

section

Coned disc spring 6

Joint section

Flat washer 6

M6x85 Hex socket 

button head bolt

Flat washer 36

M6x85 Hex socket button head bolt

DISASSEMBLING

Summary of Contents for EN4950H

Page 1: ...ries only Note The standard equipment for the tool shown above may vary by country Hedge trimmer head set Shear blade assembly with End cover Shear blade assembly without End cover End cover set for s...

Page 2: ...emoving Ball bearing 6000DDU from Cutter shaft complete Bearing setting plate 10 2 1R033 removing Ball bearings Gear extractor Large 1R045 Air density tester 1R127 diagnosing Carburetor Drill chuck ex...

Page 3: ...tect parts and product from unusual abrasion Fig 1 Once Engine is disassembled remove oil grease from the mating surface of Cylinder and Crankcase complete then apply ThreeBond 1215 to the mating surf...

Page 4: ...5x12 Hex socket head bolt Fig 4 Fig 6 Fig 7 Fig 5 Fig 3 Connector 4pcs Adjust screw Projection of Insulator Swivel Nuts Nuts to fix on the projection of Insulator Water pump pliers Rag Follow the inst...

Page 5: ...socket head bolt with flat washer and spring washer and M5x25 Hex socket head bolt and then separate Trimmer head ass y from Shaft and Pipe complete manually or using Waterpump pliers and Plastic ham...

Page 6: ...the lower side in Gear housing are the same as those on the upper side 5 Remove Retaining ring S 8 with 1R291 and separate Spur gear 24 Remove Retaining ring R 26 with 1R291 Fig 15 6 Remove M6 10 Hex...

Page 7: ...ever set by unscrewing two 4x18 Tapping screws Fig 20 11 Remove M5x25 Hex socket head bolt and two Stop rings E 4 Fig 21 then separate Cover from Pipe holder Joint Fig 22 12 Loosen four M4x20 Hex sock...

Page 8: ...13mm width groove of 1R139 and put them on 1R217 so that Cam A comes to the hole Then press down the shaft end of Spiral bevel gear 9 with 1R280 Fig 29 Fig 26 Fig 28 Pipe holder Holder plate Shaft en...

Page 9: ...ex socket button head bolt Fig 32 After adjusting the tightening torque of M6x85 Hex socket button head bolt so that Joint and Gear housing can be set to the desired angle without any backlash secure...

Page 10: ...se section 3 Remove Clutch drum from Clutch case section with 1R247 and Arbor press Fig 38 1 Put Clutch case on the table of Arbor press vertically then pressfit Clutch drum into Ball bearing 6201LLU...

Page 11: ...plug carefully 4 Install Plug cap with Plug cap spring on Plug and connect the plug screw part to a metal part of Engine then pull Starter rope slowly The sparks can be seen when starter rope is pull...

Page 12: ...hen screw two M6 bolts into Flywheel as drawn in Fig 46 instead of M6x25 shoulder hex bolts Flywheel is removed from Engine Important Screw two M6 bolts evenly ASSEMBLING 1 Wipe off the grease and oil...

Page 13: ...52 how to make a knot of the rope 4 Wind the rope two or three turns around Reel 5 While turning Reel counterclockwise fit it into Starter case and hook Spiral spring end on the rib inside of Starter...

Page 14: ...op of Inlet needle is not deformed worn out Fig 61 5 When Control lever is set in place make sure that Spring is put properly as drawn in Fig 62 6 Regarding three M3x8 Pan head screws with washers loo...

Page 15: ...er elements in place The felt element is put on the bottom and the sponge element is on the front 4 Hook the tabs of Cleaner plate assembly with the holes of Cleaner cover assembly Fig 64 Check the co...

Page 16: ...ds to screw them 6 Set Cylinder cover in place 1 Drain the oil from Engine as much as possible so that the remaining oil is not spilled out when disassembling 2 Remove the following parts from Engine...

Page 17: ...eak Do not enlarge them too much when fixed 4 Assemble Cylinder block assembly Degrease the matching surface of Cylinder block and Crank case Refer to Fig 73 apply ThreeBond 1215 on the Crank case sid...

Page 18: ...ad bolt M5 16 Flange nut M8 Hex socket head bolt M4 20 W SW MEC Hex socket head bolt M5 16 Nut M5 Hex socket head bolt M5 16 Clutch bolt M6 25 Hex socket head bolt M5 40 W MEC M10 P1 0 Hex socket head...

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