Nexgrill 820-0033 Assembly Instructions: 2-Burner Grill Build Guide
Step-by-step setup for the 820-0033 propane cart grill, from unboxing to leak test, plus the mistakes that send most first-timers back to the manual.
In This Article
Sequence Matters
60-90 Minutes Solo
Leak Test First
What Is the Nexgrill 820-0033 and Who Should Assemble It Themselves?
The Nexgrill 820-0033 is a two-burner propane cart grill with a lid: roughly 330 sq in of primary cooking space plus a warming rack near 115 sq in, two stainless tube burners, electronic ignition with a match-light backup, and a two-caster/two-fixed-leg undercarriage. It is the smallest freestanding lidded cart grill in the line, which is why balcony renters buy it - it stores against a wall.
Assembly is a one-person job if you sequence it correctly. Two components (the ignition lead and the bottom rails) must be in place before the firebox drops onto the cart, or you disassemble to fix it.
Your Ten-Minute Pre-Build Checklist Before the First Bolt
The flat-packed carton is roughly four feet long and typically clears a standard 30-inch interior door if you walk it through end-first and at an angle. If the hallway is tighter, assemble on the patio rather than dragging a half-built cart back outside.
- Clear a 6x6 ft work area, ideally on the patio
- Have a second person available for the ten minutes the lid goes on
- Confirm your tank plan - a 20-lb LP cylinder can live outside the cart on a balcony, upright and ideally covered
- Photograph the hardware bags before opening them
What Tools Do You Actually Need for the 820-0033 Build?
The box includes a stamped wrench, and it works - slowly. A real loadout: a Phillips screwdriver, 7/16-inch and 1/2-inch combination wrenches or an adjustable spanner, a socket set, a box cutter, a towel for sorting parts, and one AA battery for the igniter.
Expect 60-90 minutes solo as a first-timer. With two people, most builds land at 35-45 minutes because one person can hold the firebox while the other starts bolts.
Step 1: Unbox, Inspect, and Lay Out the Hardware by Bag Letter
Hardware bags are labelled A through H (typical). Do not dump them together - the manual reuses near-identical bolts in two lengths, and mixing them strips the thin side panels. Lay each bag on the towel and cross-check against the exploded diagram. Inspect porcelain and grates for shipping cracks before you throw the carton out.
Step 2: Firebox First - Mount the Burner Tubes and Route the Ignition Lead
Flip the firebox upside down. Seat each burner tube so its open end slides fully over the valve orifice - a tube resting beside the orifice produces the classic weak yellow jet flame. Then route the ignition lead from the control-knob position up to the burner tube and clip it in place. This is the step people skip, and why the firebox must be finished before it meets the cart.
Step 3: Lid, Handle, and Hinge Bracket Orientation
The hinge brackets are asymmetric and fit upside-down convincingly. Orient them so the lid opens past vertical without binding; hardware first, tighten last, and check the swing before final torque. This is the moment to call your helper.
Step 4: Cart Legs and Bottom Rails - Get the Tank Clearance Right
Mount the two casters and two fixed legs - the locking brake goes on the front-left on most builds, so test it before the grill is loaded. Then the bottom rails. Because the tank hangs below the firebox, the rails must be mounted with the shelf lip facing UP; flip them and the cylinder will not clear. This is the single most common 820-0033 rework.
Step 5: Side Panels, Folding Shelf, and Control Panel Reassembly
Attach side panels with the shorter bolts reserved for them, then the folding shelf and control panel. Leave every bolt finger-tight until the cart is square, then work around the frame tightening in sequence.
Step 6: Regulator, LP Hose Bracket, Grease Tray, and Cooking Grates
The regulator/LP hose bracket clips over the cart's left side-panel leg. Slide in the grease tray only after the heat shield is seated - reversed, it jams. Drop in grates and the warming rack last.
The Five Build Mistakes That Cause Weak Flames and Wobbly Carts
- Locking caster fitted on the wrong side, so the cart rolls when you lean on it
- Lid hinge bracket upside-down, causing binding and paint scuffs
- Burner tube not seated on the valve orifice - weak jet flame
- Grease tray inserted ahead of the heat shield, jamming the drawer
- Bolts mixed between bags, stripping the thin side panels
Comparing a couple of two-burner models before you commit? Use the comparison tool below to weigh specs side by side.
After the Last Bolt: The Soapy-Water Leak Test You Should Not Skip
Even a store-assembled unit needs a leak test on arrival. Mix dish soap and water 50/50, brush it on the regulator-to-tank connection and every hose joint, open the valve, and watch for expanding bubbles. No bubbles, no leak. Skipping this after a failed first ignition is how people chase a flame problem that is actually a gas-supply problem. US cylinders are governed by DOT 49 CFR 178.65 and LP handling by NFPA 58 - keep the tank upright and never test with a flame.
If the first click produces nothing, stop clicking. Confirm the AA battery, confirm the burner tube is seated, then re-run the soap test before troubleshooting further.
How to Run a Proper First Burn-In and Season the Grates
Run both burners on high, lid closed, for 15-20 minutes to burn off manufacturing oils. Then coat the warm grates with a thin layer of high-smoke-point oil (canola or grapeseed) using tongs and a paper towel, and let them cool. This seasoning layer stops your first burgers from welding to the bars.
| Post-Build Task | Time | Why It Matters |
|---|---|---|
| Soapy-water leak test | 5 min | Catches regulator/hose faults |
| High-heat burn-in | 15-20 min | Clears factory oils |
| Grate seasoning | 10 min | Prevents sticking |
Should You Assemble the 820-0033 Yourself or Pay for Store Assembly?
Store assembly in the US typically adds $50-$100, and you still do the leak test yourself. For a two-burner cart grill, self-assembly is a reasonable evening's work - but if you have no patio space, assembling inside and then discovering it won't navigate the doorway is the real risk. Boxed, it threads a 30-inch door; built, the cart width is fixed. Unbox and build outside.
Will It Fit? Doorway, Balcony, and Tank Storage Realities
On a six-foot balcony, the grill footprint plus a 20-lb tank outside the cart is workable if you keep roughly 36 inches of clearance from walls and railing. Check your lease before the first burn - many US apartment policies restrict open-flame grills on balconies and require 10 feet from structures, so confirm locally.
Fixing the Three Most Common Post-Assembly Problems
- Weak or uneven flame: burner tube off the orifice, or a hose kink at the left-leg bracket
- Wobbly cart: frame bolts left finger-tight; re-snug in sequence with the grill standing
- Drawer won't close: grease tray ahead of the heat shield - pull both and reseat
Which Buyer Profile Does the 820-0033 Build Suit Best?
Three profiles fit cleanly. The balcony renter gets the smallest lidded cart grill that stores flat against a wall. The first-time owner gets a build short enough to finish in one sitting without a helper. The tailgater gets a two-burner cart that breaks down into a car-friendly carton. If you need four burners or a side burner, size up - but for one or two people cooking most nights, the 820-0033 build is the right amount of grill. Browse the full range at Nexgrill.
