Zenoah EBZ7500, Руководство по ремонту

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-１８-
5.
Special Tools
5-2 How to use
Item Procedures
-8
）
Press of Fan
side Oil Seal
1. Insert the oil seal to the crankcase-F until
it stops with your fingers.
NOTE:

When inserting the oil seal, do not
damage the lip of it at the edge of the
crankshaft.

Insert the oil seal horizontally so as
not to be tilt.

Because there is a groove preventing
coming off on the outside of the oil
seal, its insertion is not easy.
2. Place the guide (special tool) against the
oil seal and tap it with a hammer to press
the oil seal into the crankcase-F.
NOTE:
After press, rotate the crankshaft to
check the operation of the bearing.
-9)
Compression
Pressure
Check
1. Warm-up the engine for at least 5 minutes.
NOTE:
After warm-up, the engine and the
muffler will become hot. Be careful
not to burn yourself.
2. Remove the attachment of the
compression gauge (special tool) and
attach the adapter (
φ
10mm).
3. Remove the spark plug and set the
compression gauge (special tool) to the
cylinder.
4. Pull the recoil knob quickly and strongly
about 5 times.
More than 8.4 kg/cm
2
(872kPa) is fine.
“This value is only an estimate.”
NOTE:
Engine parts is not thermal expansion
in the warm-up the shortage, or
immediately after replacement with
the new part, cannot be to correctly
measure the compression pressure.
Compression
Gauge
(
φ
14mm)
Adapter (
φ1
0mm)
Oil Seal
Push with a finger.
Crankcase-F
Attachment
Do not use.
Guide
(
①
of Crankshaft
installing tool)