ENGINE
CS-501SX, CS-501SXH
501sx
53
8-7 Replacing oil seal
1. Pry oil seal from crankcase.
NOTE:
Be careful not to damage crankshaft and
oil seal housing.
NOTE:
Before removing fl ywheel side oil seal, re-
move woodruff key.
2. Remove oil seal (A) using fl at head screwdriver.
3. Apply lithium based grease, ECHO XTended
Protection Lubricant or Red Armor Lubricant on in-
ner rubber lips of new oil seal.
4. Lubricate circumferences of new oil seal with
high melting point grease.
5. Push in new oil seal (A) until fl ush with crank-
case surface (B) using Oil seal tool X646-000360
(C).
B
C
A
A
A
B
8-8 Disassembling crankcase
1. Referring to “11-1 Disassembly chart”, remove
necessary parts for crankcase disassembly.
2. Remove 5 bolts (A) from crankcase.
3. Install long 3 bolts (B) (length: approx. 80 mm)
on one side of crankcase halves (in the picture, fl y-
wheel side is shown).
4. Tighten bolts (B) to pull crankcase halves apart.
5. Crankshaft remains on the other side of crank-
case halves, and can be removed by the same
procedure with long 3 bolts (B).
6. Clean and inspect crankshaft and crankcase for
damage and discoloration.
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