Makita EM4351UH ユーザーズマニュアル

P 12/ 22

(1) Before removing Ignition coil, separate Cylinder cover 

      from Engine, and pull out Primary wire from Ignition coil

      in advance. (Fig. 47)

(2) Remove two M4x20 Hex socket head bolts and Ignition coil 

       from Engine. (Fig. 47) 

Note: Be careful to the torque to loosen the bolts because 

           adhesive is applied on the threads under our quality 

           control. 

           Once removing their bolts, do not fail to apply adhesive 

            to the threads.

(1) Insert 0.3mm leaf of 1R366 between Ignition coil and 

      the magnet of Flywheel. (Fig. 48)

      Ignition coil will be attracted to the magnet through 1R366. 

      Then, without removing 1R366, fasten Ignition coil to 

      Engine with two M4x20 Socket head bolts. (Fig. 47)

(2) Remove 1R366. Then make sure that Flywheel does not 

      touch Ignition coil by turning it by hand.

REMOVING IGNITION COIL

MOUNTING IGNITION COIL

Spacer (2 pcs.)

M4x20 Hex socket 

head bolt (2 pcs.)

Ignition coil

Flywheel

Ignition coil

Female terminal of

Primary wire

0.3mm thick leaf 

of 1R366

DISASSEMBLING

ASSEMBLING

M8 Collared 

Hex nut

(1) Turn M8 Collared Hex nut in the center of Flywheel counterclockwise 

      using a cordless impact driver. (Fig. 49)

(2) Mount 1R364 on Flywheel, then screw two M5 bolts of 1R364 into 

      Flywheel as drawn in Fig. 50.

      Flywheel can now be removed from Crankshaft complete by turning 

      the center bolt of 1R364 clockwise using a screwdriver or the like.

      Important: Screw two M5 bolts evenly.

(1) Wipe off grease and oil from Crankshaft complete.

(2) Aligning the key way of Crankshaft complete with Woodruff key 3 on 

      Flywheel, install Flywheel onto Crankshaft complete. (Fig. 51)

(3) Screw M8 Collared Hex nut to Crankshaft complete by turning it clockwise 

      by hand.

(4) Tighten M8 Collared Hex nut firmly using an impact driver.

Note: Flywheel can be easily removed with a cordless impact driver without 

           using any locking tool, because Piston 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.

1R364

Woodruff key 3 on

Crankshaft complete

Keyway in 

the hole of

Flywheel

M5 bolt 

of 1R364 

(2 pcs.)