Husqvarna TC449 Workshop Manual page 356

FUEL INJECTION SYSTEM
Fuel pump inspection
Remove the pump as described in Section "E".
- Connect the power supply unit positive pole (12V) to the red lead pin in the
pump connector;
Connect the power supply unit negative pole to the negative lead pin in the
pump connector.
Never keep the pump connected to the power supply unit for more
than 3 seconds in a row.
H006418
H06268
S.6
1 edition (08-2010)_Rev. 11-2010
st