Makita PM7651H Technical Information page 32

6-14 Engine block
6-14-1 Engine block section
6-14-1-1 Disassembling
[1] It is highly recommended to drain the oil system of Engine block before starting disassembling because the remaining oil will
spill out.
[2] Remove Engine section from Volute case. (See 6-7 Blower section.)
[3] Remove Ignition coil, Flywheel and Spark plug from Engine section. (See 6-9 Ignition system.)
[4] Remove Air cleaner and Carburetor. (See 6-11 Carburetor section.)
[5] Remove Insulator complete and Muffler exhaust.
Note:
The bolts are thread-lock type screws.
·
Because adhesive is applied to two M5x25 Hex socket head bolts with WR and three M6x18 Socket head bolts, use a Hex
L-wrench to loosen or remove them.
ThreeBond 1342/ Loctite 243 must be applied to the thread of them when you use them again.
·
M5x25 Hex socket head
bolt with WR (2 pcs.)
Note: with adhesive
M5x14 Socket
head bolt
Fig. 6-14-1-1-2
[6] Remove two M5x30 Hex socket head bolts with WR,
and remove Rocker cover complete.
Rocker cover
complete
Fig. 6-14-1-1-1
Insulator
complete
M5x30 Hex
socket head bolt
with WR (2 pcs.)
32 / 41
Exhaust port Muffler
gasket
spacer
M6x18 Socket head bolt (3 pcs.)
Note: with adhesive
Fig. 6-14-1-1-3
[7] Remove five M6x35 hex socket head bolts, and remove
Cylinder head complete.
Muffler exhaust
M6x35 hex
socket head
bolt (5 pcs.)
Cylinder head complete
Note: Disassembly of
Rocker arm is
prohibited. Replace
Cylinder head
complete entirely.