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ENGINE

CS-2511WES

251Ws

8-9 Inspectingcrankcaseandcrankshaft

1. Remove cylinder, gasket and piston.

2. Remove woodruf key (A) from crankshaft fly-

wheel end (B).

3. Remove three bolts (C) from crankcase assem-

bly (D).

4. Set puller Y089-000111 (E) on crankcase as-

sembly (D) as shown.

5. Tighten three nuts (F) on the puller (E) alternate-

ly to remove crankcase.

6. Remove another crankcase half in the same

ways.

NOTE : If puller Y089-000111 (E) is not available,

you can use puller Y089-000110 (G) prepared as

follows.

(1) Drill two 6mm dia holes on puller Y089-

000110 (G) as below.

(2) Three screws or bolts 91311-04075 (H) (size:

M4x75mm lengh,pitch 0.7mm)

(3) Three nuts 900500-00004 (F) (size : M4, pitch

0.7mm)

(4) Three circular washers 177214-03930 (J) (size

: innner dia.4.5 x outer dia.16.5 x 1.0mm thick-

ness)

7. Clean the inside of crankcase. Replace with new

one if damaged.

8. Measure crankshaft runout and replace if it ex-

ceeds service limits (Refer to 1-5Servicelimits).

Inspect connecting rod big end (K) for discoloration

or needle bearing damage. Replace crankshaft as-

sembly with new one as required.

7mm

27mm

3mm

dia. 6mm

Echo CS-2511WES Service Manual

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