Makita EB7650TH Technical Information page 24

(6) When replacing Oil seal only, do not disassemble Cylinder block assembly but insert a slotted screwdriver in the lip portion of the inner
ring of Oil seal and pull it out. Take care not to damage Cylinder.
(7) Remove five M5x25 Socket head bolts (e) from the bottom of the engine section and then remove Oil case (f). (Fig. 53)
Fig. 53
(8) Remove four M6x30 Socket head bolts inside the oil chamber and two M6x30 Socket head bolts outside the oil chamber and then
separate Cylinder block (g) and Crankcase (h). (Fig. 54)
Crankcase (h) is stuck to Cylinder block (g) with liquid gasket. Insert a slotted screwdriver into the four slots in the mating surface of
Cylinder block and Crankcase and turn it to pry them apart. Please note that inserting a slotted screwdriver into other than the slots may
.
result in damage
Fig. 54
(g)
(9) Remove Crankshaft and Piston assembly and then replace Oil seals on the both ends of the shaft, Piston, and Piston rings.
(10) Piston (i) can be disassembled first by inserting a small slotted screwdriver or similar tool in from the notch (j) shown in Fig. 55,
then by removing one of Ring springs 12 (k), and then pushing out Piston pin (l) from the other side.
Fig. 55
(j)
(f)
(e)
h)
(
(k)
(l)
(i)
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