Inspecting Spark Plug; Replacing Spark Plug Cap And Coil - Echo CS-2511WES Service Manual

CS-2511WES
251Ws
3-3 Inspecting spark plug
3-4 Replacing spark plug cap and coil
A
IGNITION SYSTEM
A
B
A
C
B
1. Remove spark plug from the unit.
2. Inspect for spark plug gap fouling, cracked
or broken insulator, cracked outer electrode, or
rounded center electrode. Replace spark plug as
required.
Spark plug gap (A) Standard :
0.9 to 1.0 mm (0.035 to 0.039 in)
3. If engine does not start with correct spark plug,
inspect if spark plug is wet or dry. If it is exces-
sively wet or dry, inspect fuel system.
1. Disconnect spark plug cap (A) from spark plug.
2. Apply some oil in spark plug cap (A) for easy re-
moval from high tension lead (B).
3. Pull spark plug cap away from high tension lead.
4. Inspect spark plug cap coil (C) for corrosion
and correct connection. Inspect spark plug cap for
cracks. Replace as required.
NOTE: Make sure spark plug cap coil (C) contacts
center core of high tension lead when reinstalling.
5. Coat the end of high tension lead (B) with small
amount of oil, and insert into spark plug cap (A)
as shown, until the spark plug cap coil is properly
seated in the cap.
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