Zenoah EBZ7500 Workshop Manual page 27

7-1 Engine Short Block Assembly
Bearing Guide
1.5mm
Oil Seal
Plate
Crankshaft
Crankcase-F
Crank Weight
Crankcase-S
Confirm that a gap is equal.
7. Notice of Reassembly
Bearing
Guide
Crankshaft Installing Tool
Crank Weight
Crankcase-F
2) Main Bearing and Oil Seal
 Press the bearing using the bearing guide of
the special tool (see page 16).
 Press the oil seal using the guide of the
crankshaft installing tool (special tool) (see
page 16).
NOTE:
After assembling the crankshaft, press the oil
seal of the crankcase-F (See page 18）.
Guide
Crankcase-F
Crankshaft
NOTE:
Never reuse the bearings and the oil seals.
3) Crankshaft
 Confirm the assembly direction of the
crankshaft. Set the crankshaft to the TDC
position, the keyway of the shaft is downward
and the short taper is the crankcase-F side.
 Insert the crankshaft into the crankcase-F
using the crankshaft installing tool of special
tool (see page 17).
 Check that the crank weight edge and the
clearance of both sides of the crankcase edge
be equal. When a gap is not equal, tap the
crankshaft of the side where a gap is small
with a plastic hammer and do a gap equally.
-２５-
Oil Seal
TDC position
Short taper
Crankcase-F side
Keyway