15-18 ft. lb. (20 – 25 N.m)
The spark plugs must be
tightened to the proper torque.
Loose spark plug(s) will cause
compression leaks leading to
hard starting and decreased
engine power.
To ensure proper operation of
the engine, the spark plug gap
must be maintained and be free
of deposits. Clean the spark
plug according to the steps
shown below.
b) Slight amount of buildup on
the electrodes can be cleaned
with a wire brush. Replace the
plug if heavily soiled. Spark
plug(s) that look wet, oily or
have extreme electrode wear
indicate the engine needs to be
serviced by a trained small
engine technician.
19-ENG