45
ENGINE
CS-370ES
CS-420ES
7-3 Inspecting muffler and exhaust port
1. Remove cylinder cover and muffler.
2. Inspect cylinder exhaust port and clean the port
using wooden or plastic stick if carbon is found.
NOTE: When cleaning exhaust port, always position
piston at Top Dead Center (TDC) to prevent carbon
from entering cylinder. Do not use metal tool and be
careful not to scratch piston or cylinder.
NOTE: Replace exhaust gasket with new one when
removing muffler.
3. Remove muffler lid (A) and spark arrestor screen
(B) from muffler.
4. Remove carbon deposits from spark arrestor
screen and muffler lid. If screen has heavy deposits,
replace with a new screen.
5. Reinstall muffler with new gasket and cylinder
cover.
7-4 Testing crankcase and cylinder sealing
1. Remove cylinder cover.
2. Remove air filter bracket and air filter. Disconnect
fuel return line and fuel inlet line from purge bulb
(Refer to “4-3 Replacing purge bulb”). Remove
switch bracket (Refer to “3-5 Replacing ignition
switch”). Disconnect fuel line and pulse line from
carburetor, and remove carburetor from the unit.
3. To seal intake port, install pressure rubber plug
897826-16131 (A) between insulator and carburetor,
and fasten with 2 screws (B) as shown.
A
A
B
B
To Next Page
Loading...
Need help?
General
