Makita EM4350UH Technical Information page 8

R
epair
[4] DISASSEMBLY/ASSEMBLY
[4]-4. Gear case assembly (cont.)
ASSEMBLING
Assemble by reversing the disassembly procedure.
Note:
• Make sure that O ring 32 is put into the inner groove of
Gear case assembly in advance.
• When mounting Cutter shaft complete into Gear case
assembly, press-fit them together using arbor press and
1R028 as shown in Fig. 27.
[4]-5. Clutch shoe
DISASSEMBLING
Warning: Remove Spark plug cap from Spark plug to prevent accidental engine starting.
Note: Clutch can be easily removed with a cordless impact driver without locking Piston, because it is locked in a position
due to the compressed air resistance in Cylinder.
Therefore, do not remove Spark plug, or the air in Cylinder cannot be compressed.
(1) Remove two Clutch shoes and Tension springs 5 by loosening each M8 Shoulder hex bolt counterclockwise. (Fig. 28)
(2) Remove Clutch base by turning the hex portion counterclockwise. (Fig. 29)
Fig. 28
Clutch shoe (2 pcs.)
Tension spring 5 (2 pcs.)
ASSEMBLING
(1) Set Clutch base in place by turning the hex portion clockwise.
(2) Set two Clutch shoes and Tension springs 5 in place by tightening each M8 Shoulder hex bolt clockwise; first by hand,
then with a cordless impact driver*
*This is because the M8 Shoulder hex bolt is a shoulder bolt. Therefore, tighten by hand until the shoulder of the shaft portion contacts the upper end
surface of Clutch shoe, then tighten fully with a cordless impact driver. (Fig. 30)
Note:
• Face the arrow marks on Clutch shoes toward the upper side. (Fig. 31)
• Put Clutch shoe between Wave washer 10 and Flat washer 8, then tighten M8 Shoulder hex bolt.
Refer to Figs. 30 and 31.
Fig. 30
M8 Shoulder hex bolt
Wave washer 10
shaft portion
shoulder
Clutch shoe
Clutch base
M8 Shoulder hex bolt
(2 pcs.)
Fig. 31
Flat washer 8
Fig. 27
The components of
Cutter shaft complete
Gear case assembly
Fig. 29
Clutch base
Flat washer 8
(2 pcs.)
Wave washer 10 (2 pcs.)
M8 Shoulder hex bolt (2 pcs.)
P / 2
1R028
Ball bearing
6000DDU
Hex portion of
Clutch base
Arrow marks on
Clutch shoes
(2 pcs.)