101 Natural Gas Conversion Kit Assembly Guide

Before you begin, make sure your grill model supports natural gas conversion. This kit is compatible with the following Monument Grills models:

• Eminence 605
• 41847NG
• Denali 605
• 77352NG

What You’ll Need

• NG hose
• NG regulator
• Slot screwdriver (flat-blade)
• Orifice sockets
• NG side burner orifice

Tip: Always work in a well-ventilated outdoor space and keep safety gloves handy. You can buy the conversion kit here.

Step-by-Step Conversion

Step 1: Remove the LP fuel tank
➡ Make sure the tank valve is fully closed before disconnecting. Always handle the tank outdoors and keep it upright.

Step 2: Use a 6mm wrench to remove the LP regulator
➡ Double-check that there's no gas pressure left in the line before loosening.

Step 3: Install the NG regulator
➡ Ensure the regulator is tightened securely to prevent leaks.

Step 4: Pass the NG hose through the grill cart
➡ Keep the hose away from sharp edges or hot surfaces to avoid damage.

Step 5: Connect the NG hose to the NG regulator
➡ Hand-tighten first, then use a wrench carefully. Do not overtighten.

Step 6: Connect the NG hose to the rigid natural gas supply pipe
➡ Always use approved pipe sealant or tape rated for gas connections. Test connections later with a soapy water solution to check for leaks.

Step 7: Push back the clamp spring
➡ Hold it firmly to prevent it from snapping back during removal.

Step 8: Remove the burner
➡ Gently lift it out to avoid bending the burner tube.

Step 9: Use orifice sockets and slot screwdriver to remove brass orifice from the end of gas valve
➡ Keep the removed LP orifice in a safe place in case you ever convert back.

Step 10: You don't need to install NG orifice — it's already in place
➡ Just confirm it's seated properly before moving on.

Step 11: Reinsert the burner
➡ Align the burner tube correctly with the gas valve opening.

Step 12: Reattach using the clamp spring previously removed
➡ Make sure the spring locks the burner securely in place.

Step 13: Remove the LP side burner orifice
➡ Work carefully here, as the side burner fittings are smaller and more delicate.

Step 14: Install the NG side burner orifice
➡ Tighten snugly, but do not force it.

Step 15: Remove all the control knobs (firmly pull off)
➡ Grip straight and pull outward — avoid twisting to protect the valve stems.

Step 16: Use flat-blade screwdriver to turn the high-flame setscrew clockwise about 90°
➡ This reduces the flame for natural gas use. Do not over-adjust — 90° is usually enough.

Step 17: Reattach the control knobs and turn off the burner
➡ Once installed, test all burners. Turn them on briefly, check flame color (blue with slight yellow tips is ideal), then turn them off.

Final Safety Check:

• After conversion, always perform a leak test with soapy water on all connections.
• If you see bubbles forming, shut off the gas immediately and retighten.
• If unsure, contact a technician to review your installation.

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Related natural gas grill resources

Before or after conversion, these Monument Grills links help confirm compatibility, setup, safety, and replacement parts:

• Natural Gas Conversion Kit
• Natural Gas Conversion Kit Collection
• Natural Gas Grill
• Eminence 605
• 41847NG Stainless Natural/Propane Gas Grill
• Denali 605
• 77352 Stainless Propane Gas Grill
• Gas Grills
• Gas Grills Parts
• Outdoor Grill Replacement Parts
• Assembly Manuals and Videos
• Warranty and Replacement Parts
• Support
• Monument Grills FAQs
• How to Perform a Gas Leak Test on Your Grill
• Installing Your Monument Gas Grill
• Troubleshooting Your Grill
• How to Clean Your Monument Grill
• Eminence Series Grill Maintenance Guide
• Monument Grills Comparison