9www.napoleongrills.comWARNING! Always wear protective gloves and safety glasses when cleaning your grill.WARNING! Turn off the gas at the source and disconnect the unit before servicing. To avoid the pos-sibility of burns, maintenance should be done only when the grill is cool. A leak test must be performedannually and whenever any component of the gas train is replaced or gas smell is present.Maintenance InstructionsWe recommend this gas grill be thoroughly inspected and serviced annually by a qualified service person.Combustion Air Adjustment: (This must be done by a qualified gas installer.) The air shutter is factory set andshould not need adjusting under normal conditions. Under extreme field conditions, adjustments might berequired. When the air shutter is adjusted correctly the flames will be dark blue, tipped with light blue andoccasionally yellow.With too little air flow to the burner, the flames are lazy yellow and can produce soot.•With too much air flow, the flames lift erratically and can cause difficulties when lighting.•Adjusting the air shutter:1. Remove cooking grids and sear plates and leave lid open. You may have to open the door or remove thetop drawer (if equipped) to access the air-shutter screw located at the mouth of the burner. The back covermust be removed for rear tube burner air shutter adjustment.2. Loosen air-shutter lock screw and open or close air shutter as required. The normal opening settings are:Main Tube Burner Propane 1/4” (6mm) Rear Tube Burner Propane Full OpenNatural 1/8” (3mm) Natural 3/8” (10mm)*Infra-Red burners have no air adjustment.3. Light the burners and set to high. Visually inspect burner flames. When the shutters are set correctly, turnburners off, tighten locking screws, and replace removed parts. Ensure that the insect screens are installed.Burner: The burner is made from heavy wall 304 stainless steel, but extreme heat and a corrosive environmentcan cause surface corrosion to occur. This can be removed with a brass wire brush.CAUTION! Beware of Spiders.Spiders and insects are attracted to the smell of propane and natural gas. The burner is equipped with an insect screen onthe air shutter, which reduces the likelihood of insects building nests inside the burner but does not entirely eliminate theproblem. A nest or web can cause the burner to burn with a soft yellow or orange flame or cause a fire (flashback) at the airshutter underneath the control panel. To clean the inside of the burner, it must be removed from the gas grill: Remove thescrew (s) that attaches the burner to the back wall. Slide the burner back and upwards to remove. Cleaning: Use a flexibleventuri tube brush to clean the inside of the burner. Shake any loose debris from the burner through the gas inlet. Checkthe burner ports and valve orifices for blockages and use an opened paperclip to clean them. Take care not to enlarge theholes. Ensure the insect screen is clean, tight, and free of any lint or other debris.Reinstallation: Reverse the procedure to reinstall the burner. Check that the valve enters the burner when installing. Re-place sear plate mount and tighten screws to complete reinstallation.Light BlueYellow TippingDark BlueBurnerBurner PortApproximately1/2” (13mm)