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[3] DISASSEMBLY/ASSEMBLY
[3] -4. Active Dynamic Vibration Absorber (HR4510C and HR4511C only)

R

epair

ASSEMBLY

DISASSEMBLY

Spring guide

Spring guide

If Spring guide is
locked inside the
Absorber,

Push the locked
Spring guide to 
protrude from Absorber.

Now Spring guide
protrudes.

Spring guide

Mount Active dynamic vibration absorber
while keeping its position parallel to 
Crank housing.

Spring guide

Fig. 31

Fig. 32

Fig. 33

Fig. 34

1) Assemble Active dynamic vibration absorber.  (Fig. 30)
2) Set Spring guide in place as illustrated in Fig. 31.
3) Mount Active dynamic vibration absorber on the both side of Crank housing complete.   (Fig. 32)
4) Do the reverse step of disassembly in Fig. 27.  

[3] -5. Crank Cap Section

1) Remove Crank cap section as illustrated in Fig. 27.
2) Disassemble Crank cap section as illustrated in Figs. 33 and 34.

Link plate

Crank cap

Crank cap

Link plate and Change lever
can be disassembled from 
Crank cap.

M4x12 Pan head screw
(with threadlocker)

Crank lever

Torsion
spring 15

Pull off Torsion
spring 15 with
pliers. 

Remove Link lever. 

Link lever

Torsion spring 15

Link lever

Crank shaft

Crank lever

Link plate

While gripping Crank lever with water pump pliers, unscrew M4x12 
Pan head screw using cordlress impact driver with philips bit.

phillips bit

Summary of Contents for HR4501C

Page 1: ...e been developed as successor models of HR4500C featuring low vibration level and high work efficiency Listed below are their main features Active dynamic vibration absorber Model No Vibration absorbi...

Page 2: ...Fitting Fluoride ring 28 to Impact bolt Screwing Unscrewing M4x25 Hex socket head bolt of Barrel cover Screwing Unscrewing M6x30 Hex socket head bolt of Barrel Removing Ball bearings Removing Mounting...

Page 3: ...ture Crank room Lip portion Inner periphery of Plane bearing 59 The component of Crank housing completete Fig 2 Grease R No 00 82 Crank shaft 40 37 49 48 39 99 146 Armature Torque limiter assembly 82a...

Page 4: ...le section from Motor housing by unscrewing 5x25 Tapping screws 2 Pull off Connector from Controller 3 After removing 4x14 tapping screws disassemble Controller from Motor housing Ring spring 25 While...

Page 5: ...Fig 12 Reserve the space for Tool retainer removing by pressing down Spring guide And take off Tool retainers 2pcs from Tool holder Disassemble Spring guide and Compression spring 49 from Tool holder...

Page 6: ...hane ring 36 from Tool holder M6x30 Hex socket head bolt 4 pcs Barrel cover complete Barrel complete Barrel complete Barrel complete Flat washer 36 Flat washer 36 Urethane ring 36 Tool holder Tool hol...

Page 7: ...nd to Crank housing assemble Straight bevel gear 35 the Driving sleeve section with Link arm Compression spring 39 and Ring 38 Refer to Fig 18 Fig 19 Fig 20 O ring 27 Bulge portion Crank housing side...

Page 8: ...ethane washer 36 Urethane washer 36 Rubber ring 20 Shoulder sleeve 19 Face the chamfered edge to Impact bolt Face the conical side to Slide sleeve Face the chamfered Side to Shoulder sleeve 19 Insert...

Page 9: ...il seal 35 Lip portion Barrel complete Note Facing the lip portion of Oil seal 35 to Tool holder cap side fit Oil seal into Barrel complete 1 Fit Oil seal 35 into Barrel complete Refer to Fig 26 2 Sec...

Page 10: ...as follows Disassemble Active dynamic vibration absorber by levering up with two slotted screwdriver Active Dynamic Vibration Absorber Remove Crank housing cover Then set Change lever to Rotation wit...

Page 11: ...Fig 31 3 Mount Active dynamic vibration absorber on the both side of Crank housing complete Fig 32 4 Do the reverse step of disassembly in Fig 27 3 5 Crank Cap Section 1 Remove Crank cap section as i...

Page 12: ...andle installation side by hand If sliding Link plate by hand is impossible Driving sleeve does not engage with Straight bevel gear 35 when assembling Tool holder section Push Driving sleeve to engagi...

Page 13: ...p section Fig 38 HR4511C only 5A Assemble Control plate by fitting its elliptic Loop portion with the protrusion of Crank lever Then mount Crank cap cover Fig 38A HR4501C and HR4510C only Change Lever...

Page 14: ...onnecting rod Crank shaft Connecting rod Connecting rod Piston Fig 41 Fig 42 Fig 43 Screwdriver Wooden piece to protect the edge of Crank housing complete Cylinder 34 Cylinder 34 can be removed by lev...

Page 15: ...d separate Switch box from Handle Now Slide switch can be replaced Leaf spring 4x14 Tapping screw Slide switch Switch box Slide lever complete Slide lever complete ASSEMBLY 1 Passing Connecting rod th...

Page 16: ...r 12mm Holding Fan 90 with gloved hand remove M8 12 Hex nut using cordless impact driver with M8 Socket bit Remove rear cover from Motor housing Note Turn M8 12 Hex nut clockwise Fan guide Fan 90 Flat...

Page 17: ...bled as illustrated in Fig 55 Fig 54 HR4510C and HR4511C only Slotted screwdriver Crank housing cover Remove Crank Housing Cover and Active Dynamic Vibration Absorber Remove M6x30 Hex socket head bolt...

Page 18: ...ining Ring S 14 Retaining ring S 17 Remove Crank shaft by carefully striking the specific position of Crank housing complete as illustrated right while keeping Connecting rod in right angle to the rem...

Page 19: ...Dust cover support Dust cover Handle cover Separate Handle section from the machine by unscrewing 5x25 Tapping screws Remove another two 5x25 Tapping screws to disassemble Handle in the next step Rem...

Page 20: ...M4x12 Pan head screw Item No 78 Item No Fastening torque Q ty Description 15 4 7 8 11 7 N m M6x30 Hex socket head bolt M6x30 Hex socket head bolt M4x12 Pan head screw 64 78 4 4 9 7 8 N m 131 1 1 1 8...

Page 21: ...ome countries instead of black Lead wire of A is blue for some countries instead of white A B Lead unit Wiring diagram Fig D 1 Fig D 2 viewed from Motor housing side Do not to pinch the Lead wires at...

Page 22: ...from Lock ON Switch in Switch box Lead wires to ON OFF Switch Do not to pinch the Lead wires at this position when assembling Handle Viewed from Motor housing side Motor Housing Handle Switch Box vie...

Page 23: ...nected exactly to Brush holder unit Wire connecting portion faced to Field side interferes the exact connecting of Carbon brush s Terminal to Brush holder unit Connecting Carbon Brush Field side Rear...

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