ENGINE
CS-2510TES
250Ts, 250TCs
63
8-7 Inspecting piston and piston ring (continued)
NOTE:
Make sure to place piston with piston arrow
mark (P) pointing as shown.
10. Insert pin guide tool (Q) stamped “8”, through
piston (H), with needle bearing (L) and piston pin
spacers (M) set at step 9.
11. Insert piston pin (G) in piston (H), pushing out
pin guide tool (Q) until the pin end comes up to
snap ring groove.
NOTE:
If piston pin is tight, use piston pin tool
897702-30131 (J) with pusher adapter (K) stamped
“8”.
12. Install new snap rings on both end of piston
pin. Make sure that they are properly seated in
snap ring grooves.
NOTE:
Always use new snap rings.
13. Install piston ring on piston.
8
P
Q
H
J
K
G
Q
8-8 Replacing oil seal
1. Pry defective 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. Apply lithium based grease on inner rubber lips
(a1) of new oil seal (A).
3. Lubricate circumferences (a2) of new oil seal
with 2-stroke oil.
4. Push in new oil seal (A) until fl ush with crank-
case surface using oil seal tool 897726-09130 (B).
a1
C
A
B
a2
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