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ENGINE

CS-2511TES

251Ts, 251TCs

8-4Testingcrankcaseandcylindersealings

1. Remove air cleaner cover, air lter and carbure-

tor from the unit (Refer to “4-9 Testing carburetor” ).

2. There are two ways to seal intake port and

crankcase pulse passage. Choose convenient one

from followings.

Way1 : Install pressure plate 897827-16131 (A)

and tighten M5 bolts (B) of 8-10 mm (0.3-0.4 in)

length.

Way2 : Install pressure rubber plug 897826-16131

for carburetor.

3. To seal exhaust port of cylinder, cut pressure

rubber plug 91041 (F) off as shown.

4. Remove exhaust plate and mufer (G) with ex-

haust gasket (H) (Refer to “8-3 Inspecting mufer

and exhaust port” ).

5. Set pressure rubber plug (F) to mufer (G) with

exhaust gasket (H) as shown.

NOTE : Make sure to cover exhaust port (g) of

mufer with pressure rubber plug (F).

6. Gently tighten mufer bolts (J1 and J2) until the

muffler (G) and pressure rubber plug (F) fit with

cylinder. Then turn mufer bolts (J1) 180 degrees

clockwise.

NOTE : Do not install exhaust plate. Do not tighten

mufer (G) and pressure rubber plug (F) fully, or

mufer (G) may be deformed.

44mm

17mm

Echo CS-2511TES User Manual

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