Nexgrill 720-0896B Assembly Instructions: Revision Check, Torque Sequence, and First-Fire Checklist
A revision-first, fastener-sequencing method for building the 720-0896B correctly and safely-before you light a single burner.
In This Article
Confirm Your Revision First
Loose-Tighten Sequence Prevents Warping
Leak Test Is Non-Negotiable
How to Confirm You Have the Right 720-0896B Manual and Hardware Revision
Before you tear open a single hardware bag, confirm you have the correct manual and hardware for your specific 720-0896B revision. Nexgrill, like most grill manufacturers, updates models mid-production without changing the headline model number, so a guide for rev A won't match rev C's bolt count or bracket design. Start by locating the carton label-usually a white sticker with a barcode and a model number like 720-0896B. Then check the rating plate on the grill itself: it's a metal tag riveted to the back of the firebox or inside the cart door, and it lists the serial number and a revision code (often a letter suffix). If the carton says 720-0896B but the rating plate says 720-0896B-1, you have a later revision and your manual must reflect that. Also look for a CSA/ANSI sticker (e.g., ANSI Z21.58 / CSA 1.6) near the rating plate-its presence confirms the grill meets U.S. and Canadian safety standards, but the revision code is what dictates assembly details.
Tip: Photograph the carton label and rating plate before assembly. If you need to call support, those images speed up parts identification.
If the manual in the box doesn't match the revision on the rating plate, stop. Download the correct manual from Nexgrill's product page or contact support with your model and serial number. Using the wrong manual often leads to missing parts or misassembled brackets that compromise safety.
What to Have Ready Before You Start: Tools, Space, and a Second Set of Hands
Gather tools and clear a work area before unboxing. Most 720-0896B builds require a Phillips screwdriver, an adjustable wrench, and a socket set (10mm and 13mm are common). Some manuals include a stamped wrench, but it's usually flimsy-have a proper adjustable wrench on hand for brass fittings. A second person is invaluable when lifting the firebox onto the cart; the firebox is the heaviest component and awkward to balance solo. Work on a flat, non-abrasive surface like a garage floor or a large cardboard sheet to protect the finish. Lay out all hardware bags and compare them to the manual's parts list before assembly-missing a bolt early saves a mid-build scramble.
The Core Assembly Method: Loose-Start, Square the Frame, Then Final Torque
The single biggest cause of a wobbly cart or misaligned lid is over-tightening bolts before the frame is square. Follow this three-phase method: (1) Loose-start all bolts-thread every bolt and nut finger-tight, leaving 1-2mm of play. (2) Square the cart-with all bolts loose, gently push and pull the cart until the legs are equidistant and the base shelf sits flat; then tighten the cart bolts in a cross pattern (top-left, bottom-right, top-right, bottom-left) to 60-80 inch-pounds (about 7-9 Nm). (3) Final torque-after the firebox and lid are mounted, torque all remaining bolts in a cross pattern to the same spec. This sequence prevents binding and ensures the lid closes evenly.
Warning: Never use a impact wrench on brass fittings or the regulator-hand-tighten plus a quarter turn is sufficient. Over-tightening can crack the fitting and cause a leak.
Step-by-Step: Building the 720-0896B with Fastener Sequencing
Follow this numbered sequence to avoid rework:
- Unpack and inventory: Separate hardware by bag number and verify against the manual's parts list. Note any missing items.
- Assemble the cart loosely: Attach legs to the base shelf and side panels using bolts finger-tight. Do not tighten yet.
- Square the cart: Measure diagonally from front-left to rear-right and front-right to rear-left-the two measurements should match within 5mm. Adjust until square, then tighten cart bolts in a cross pattern.
- Mount the firebox: With a helper, lift the firebox onto the cart and align the mounting holes. Insert bolts finger-tight; do not fully tighten until the lid is checked.
- Attach the lid: Mount the lid to the firebox using the hinge pins or bolts provided. Check alignment-the lid should close without rubbing. If it doesn't, loosen the firebox bolts slightly, adjust, and retighten.
- Install side shelves and side burner (if equipped): Attach brackets and shelves, again starting bolts loose and tightening after alignment.
- Final torque all fasteners: Go over every bolt in a cross pattern, tightening to 60-80 inch-pounds. Do not overtighten.
- Install the ignition battery: Locate the ignition module (usually under the control panel) and insert a AA battery (check manual for type). This is frequently forgotten.
Typical torque spec for cart and firebox bolts (7-9 Nm)
Common Assembly Mistakes That Cause Wobble, Binding, and Safety Risks
Avoid these pitfalls: Over-tightening bolts early-it twists the frame and makes squaring impossible. Skipping the squaring step-results in a wobbly cart and a lid that doesn't seal. Cross-threading brass fittings-always start by hand, then snug with a wrench. Forgetting the ignition battery-you'll troubleshoot a non-working ignition unnecessarily. Not leak-testing-a safety risk; always perform a soapy-water test on all propane connections before first fire. Ignoring the manual's burn-off instruction-typically 15 minutes on high with lid closed to burn off manufacturing oils; confirm exact duration for your SKU.
When to Stop and Call Nexgrill Support for Missing or Damaged Parts
If you find missing, damaged, or incorrect parts, do not improvise. Contact Nexgrill support with your model number (720-0896B), serial number, and the part number from the manual's exploded view. Trying to substitute hardware can compromise safety or fit. Support can ship replacement parts, and having the manual handy speeds up the process. For contact options, visit Nexgrill Contact & Support.
Once you have your parts and tools ready, compare two assembly approaches below to see which fits your situation best:
Once You've Compared Two Options: What Else Matters for the 720-0896B Build
After weighing two assembly approaches-say, building solo versus with a helper-consider long-term factors that affect satisfaction. The 720-0896B uses a propane tank (sold separately), so budget for a standard 20 lb tank and a spare if you entertain often. Storage space matters: assembled dimensions are roughly 50 inches wide by 25 inches deep, so measure your patio or garage before building. If you plan to move the grill frequently, invest in locking casters (some models include them) to prevent rolling on sloped surfaces. Also think about wind exposure-a wind guard or a sheltered spot reduces flare-ups and improves temperature stability.
Safety-Critical Step: Propane Leak Testing Before First Fire
Never skip the leak test. After connecting the propane tank, mix a solution of one part dish soap to three parts water and apply it to the tank-to-regulator connection and the regulator-to-manifold connection. Turn on the tank valve (do not light the grill). If bubbles appear, there's a leak-tighten the connection and retest. If bubbles persist, turn off the tank and contact support. According to the National Fire Protection Association (NFPA), grills caused an average of 10,600 home fires per year from 2014-2018, many due to leaks or improper connections. The U.S. Consumer Product Safety Commission (CPSC) also emphasizes leak checks before first use. Always leak-test after any tank change or if the grill has been in storage.
Tip: Keep a spray bottle of soapy water near the grill for quick leak checks-it's faster than mixing a fresh batch each time.
First-Fire Checklist: Burn-Off, Flame Observation, and Seasoning
Before cooking, perform a burn-off: light all burners on high, close the lid, and let it run for 15 minutes (consult your manual for exact duration). This burns off manufacturing oils. During burn-off, observe flame color-should be mostly blue with occasional yellow tips. Excessive yellow or lifting flames indicate a problem; turn off and check burner tubes for obstructions. After burn-off, let the grill cool, then coat cooking grates with a high-heat oil (like canola) to season them. Reapply oil every few cooks to maintain the seasoning.
| Task | Tools/Materials | Time | Notes |
|---|---|---|---|
| Leak test | Soapy water, spray bottle | 5 min | Check all connections |
| Burn-off | None | 15 min | Lid closed, high heat |
| Season grates | High-heat oil, paper towel | 5 min | Apply thin coat |
Tools and Fasteners: What's in the Box vs. What You Need
The 720-0896B box typically includes hardware bags, a manual, and sometimes a cheap stamped wrench. But you'll want your own tools: a #2 Phillips screwdriver, an adjustable wrench (for brass fittings and hose connections), and a 10mm/13mm socket set. A magnetic bowl helps keep bolts organized. Consider buying a small torque wrench calibrated in inch-pounds for accurate tightening-it's a $30-$50 investment that prevents overtightening. Also have a AA battery for the ignition and a 20 lb propane tank (not included).
Real-World Scenarios: Small Patio, Tight Storage, and Shared Spaces
On a small patio, assemble the grill near its final spot-moving a fully built grill through narrow doors is difficult. If storage is tight, remove side shelves (if detachable) to reduce width. In shared spaces like apartments or townhomes, check HOA rules on grill use and consider a cover to minimize smoke and odor complaints. If you must store the grill between uses, disconnect the tank, cover the grill, and store the tank upright outdoors-never indoors.
