ENGINE
CS-2511TES
251Ts, 251TCs
60
A
8-4 Testing crankcase and cylinder sealings
1. Remove air cleaner cover, air filter 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
(C) and carburetor (D) and tighten original bolts (E)
for carburetor.
3. To seal exhaust port of cylinder, cut pressure
rubber plug 91041 (F) off as shown.
4. Remove exhaust plate and muffler (G) with ex-
haust gasket (H) (Refer to “8-3 Inspecting muffler
and exhaust port” ).
5. Set pressure rubber plug (F) to muffler (G) with
exhaust gasket (H) as shown.
NOTE
: Make sure to cover exhaust port (g) of
muffler with pressure rubber plug (F).
6. Gently tighten muffler bolts (J1 and J2) until the
muffler (G) and pressure rubber plug (F) fit with
cylinder. Then turn muffler bolts (J1) 180 degrees
clockwise.
NOTE
: Do not install exhaust plate. Do not tighten
muffler (G) and pressure rubber plug (F) fully, or
muffler (G) may be deformed.
44mm
17mm
B
C
E
D
F
F
G
H
J1
g
J2
