Replacing Oil Seal And Ball Bearing - Echo CS-310 Service Manual

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8-9 Replacing oil seal and ball bearing

ENGINE
1. Check oil seal(s) and replace if defective.
2. Check ball bearing(s) for smooth rotation. If not,
remove ball bearing(s) using bearing wedge (A)
897701-02830.
A
3. Install new ball bearing(s) onto crankshaft us-
ing bearing/seal tool 897726-21430 (B). Bearing
should be completely seated against crankshaft
B
counterweights.
NOTE: Preheat ball bearing using heating gun,
heat lamp, or suitable heater for easier installation.
4. Install oil seals onto both ends of crankshaft in-
suring proper direction of oil seal.
CS-310