Chainsaw User Manual

MK CX-3 Revision 09/04, Effective Date September 17, 2004 Page 32
MAINTENANCE AND TROUBLESHOOTING
12. Spark Plug Adjustments and Replacement:
DO NOT work around the engine while hot.
NOTE: 1. Recommended spark plugs are: NGK – BPR6ES or DENSO – W20EPR-U
2. When installing the Spark Plug, ensure the threads of the are aligned with the threads in the
engine so as not to “cross-thread" the plug.
(D)
Clean with a wire brush and re-gap
the Spark Plug
(C)
Inspect Spark Plug if worn replace
Spark Plug and go to step E
(B)
Remove the Spark Plug using a
13/16-inch Spark Plug Socket
(A)
Remove Spark Plug Cap and
clean around the cap and spark
plug
(F)
Tighten the Spark Plug If new,
tighten 1/2-turn, if old, tighten 1/8-
1/4 turn using a 13/16-inch Spark
Plug Socket
(E)
Install the Spark Plug by Hand DO
NOT cross-thread the Spark Plug
(G)
Install the Spark Plug Cap verify
the Spark Plug Cap is seated
Electrode
not worn
N
o chips o
r
cracks
Clean
Pull back to
remove
Spark Plug Wrench
Gap Setting 0.028
– 0.031 in (0.70 –
0.80 mm
Set Gap Seat by Hand
Turn clockwise
to tighten
Push in to
install
Spark Plug
Cap
Spark Plug
Cap