Husqvarna TC 449 2011 I.E. Workshop Manual page 97

GENERAL PROCEDURES
TC 449 2011/2012 I.E.
TE 449 - 511 2011/2012 I.E.
TXC 449 - 511 2011/2012 I.E.
SMR 449 2011 I.E.
SMR 511 2011/2012 I.E.
- turn spark plug cap (3) complete with coil through 90° and lift it to remove it;
then remove spark plug.
3
H02466
Carefully change the spark plug, if necessary, using one having the
same rating.
Before refitting the plug, thoroughly clean the electrodes and the
insulator using a metal brush. Apply graphitised grease on spark
3
plug thread, screw it by hand all the way down, then tighten it to
the torque of 10 ÷ 12 Nm (7.38 ÷ 8.85 ft-Ib). Loosen spark plug and
tighten it again to 10÷12 Nm (7.38 ÷ 8.85 ft-Ib).
Spark plugs which have cracked insulators or corroded electrodes
should be replaced.
H02465
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Workshop Manual Ed. 03-2012