Makita EK7650H, Technical Information

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[4] DISASSEMBLY/ASSEMBLY
[4]-4. Flywheel, Ignition coil
R
epair
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(1) Loosen four M5x30 - Hexalobular socket head bolts, then remove
Fan cover. ( Fig. 22 )
(2) Remove M10 Flange nut from Crankshaft by turning counterclockwise
by using Cordless impact driver with 14mm flats width Socket bit.
( Fig. 23 )
(3) Mount 1R364 on Flywheel complete, then put Screwdriver through
the center shaft of IR364. ( Fig. 24 )
(4) While holding the one of M6 bolts and center bolt with Water pump pliers
to prevent 1R364 from being rotated, turn Screwdriver clockwise.
When Flywheel is removed from Crankshaft, a snap sound is heard
because of their tapered fit.
(1) Remove grease from Crankshaft complete.
(2) After aligning the key slot of Flywheel complete with
Woodruff key in the keyway of Crankshaft complete,
mount Flywheel complete onto Crankshaft complete.
( Fig. 25 )
(3) Assemble the rest by reversing the disassembly procedure.
Fig. 22
DISASSEMBLING FLYWHEEL COMPLETE
ASSEMBLING FLYWHEEL COMPLETE
Fig. 23 Fig. 24
Fig. 25
M10 Flange nut
Flywheel
Crankshaft
14mm flats width
Socket bit
Screwdriver
Water pump
pliers
Woodruff key
in key way of
Crankshaft complete
M5x30 - Hexalobular socket
head bolt (4 pcs.)
M6 bolt of 1R364 Center bolt of 1R364
Key slot of
Flywheel complete
Fig. 26
ADJUSTMENT THE GAP BETWEEN IGNITION COIL AND FLYWHEEL
0.3 up to 0.4mm is the proper gap between Ignition coil and Flywheel.
Refer to Fig. 26 and the following steps.
(1) Loosen two M5x16 Hexalobular socket head bolts on Ignition coil.
(2) Insert 0.3mm leaf of 1R366 between Ignition coil and the magnet of
Flywheel complete.
Ignition coil will be attracted to the magnet through the Feeler gauge.
Then, without removing the Feeler gauge, fasten Ignition coil to
the engine with two M5x16 Hexalobular socket head bolts.
First tighten 1 , the next, tighten 2 . The order is easy to keep
the proper gap.
(2) Remove 1R366. Then make sure that Flywheel complete does not
touch Ignition coil by turning it by hand.
0.3 up to
0.4mm
0.3mm leaf of 1R366
M5x16 Hexalobular socket head bolt
(2 pcs.)
1
2