Burner Adjustment - North Star M157310AC.1 Owner's Manual

The oil burner is preset and performance tested at the factory (elevation 1100 feet). Different
altitudes may require a one-time initial burner adjustment.
CAUTION:
If white smoke appears from the burner exhaust vent during start-up or operation, discontinue
use and readjust air bands.
Specific steps for burner correction are given below.
Adjusting the burner will require you to access the burner from underneath the
Burner
pressure washer while someone else is operating the spray gun.
Correction
Detailed instructions:
1. Make sure burner is cool to the touch before attempting to adjust.
2. Locate the air intake adjustment band as shown in Figure 13 below. Observe
Intake Adjustment
3. Loosen the locking screw and rotate the air band closed until black smoke
4. Slowly open the air band until white smoke just starts to appear.
5. Turn air band halfway back to the black smoke position previously noted.

Burner Adjustment

Oil Burner Adjustment
(only needed if white exhaust smoke appears)
WARNING
: The burner adjustment procedure requires part of
an individual's body to be underneath the pressure washer while it is
elevated. Always ensure the pressure washer is securely elevated
before working on the burner underneath.
the position of the arrow on the air band relative to the calibration numbers
directly to the right. (Note: Factory calibration starts out at close to "1".)
Rotatable Air
Band
Arrowhead
Locking
Screw
appears from the burner exhaust vent. Note which number the arrow now
points to.
Tighten the locking screw.
34
Figure 13
Burner