Repair
1.Replacement of carbon
1)Loosen three tapping screws 4x18 that fix front handle and remove front handle to replace the carbon.
2)Secure lead wires to the lead holder.
Tapping screw 4x18 (3 pcs.)
Carbon brush
Lead holders (4 locations)
2.Replacement of front hand guard
1)Put down front hand guard forward and replace it while actuating a
2)Mount torsion spring 20 on the front hand guard as shown in the figure below.
3)Mount the front hand guard to the housing L at an angle as shown below. At this time hook the torsion spring to the boss of the housing L.
Front hand guard 
Housing L
Torsion spring 20 | Hook here |
3. Replacement of bearing
Replace bearing #6001LLB by using two flat head screwdrivers as shown below.
Flat head screwdriver
Bearing #6001LLB
Spur gear 55
Spindle
Bearing #608ZZ
