Vermont Casting VM750 - Manual (Page 27)

Maintenance
BURNER ADJUSTMENT
NOTE: It may be necessary to adjust the burners periodically,
to compensate for variables in gas characteristics. If you notice
that the burner flame pattern is irregular (see Figs. 9a, 9b
& 9c), it may be necessary to adjust the air shutter opening at
the front of the venturi tubes.
• The shutters are accessible under the control panel at
the front of the Grill (see Fig. 20).
• Use a screwdriver to loosen the locking screws. Open
the shutter just enough to achieve the desired soft, blue
flames. Make adjustments in small increments and allow
the burner to come up to operating temperature
(10 min.) before making further adjustments.
If burners are removed for cleaning or adjustment, always
confirm that they have been reinstalled correctly over the valve
outlets (see Fig. 21). The valves should extend into the burner
venturis
1 / 4 " minimum.
NOTE: Similar adjustment can be made to Rotisserie and/or
Side Burners, if so equipped.
Fig. 20
Page 21
Fig. 21
Loosen the
locking screw
Turn shutter
clockwise to open
Venturi tube
Valve outlet
1/4”
Care & Maintenance