How to Replace W10339442 Gas Range Surface Burner Control Knob on Whirlpool Maytag — Step-by-Step

Your Whirlpool range's control knob just spins without clicking into position. Or maybe it cracked off in your hand when you tried turning the burner down from high heat. This is one of the simplest repairs you'll ever do on your gas range — no tools required, takes about 90 seconds per knob, and you won't even need to pull the range from the wall.

What You Need Before Starting

Tools needed: None — this is a pull-off, push-on replacement

Time required: 1-2 minutes per knob

Difficulty: EASY — Perfect for first-time DIYers

Safety First

Make sure all burners are off and the cooktop is completely cool before starting. While you don't need to disconnect power for this repair, it's good practice to ensure no burners are accidentally turned on while the knobs are removed. If you're replacing a damaged knob, check for any sharp edges on the broken piece before handling.

Step 1: Remove the Old Control Knob

Grip the knob firmly and pull straight out away from the control panel. These knobs use a D-shaped shaft connection — they're designed to pull off without any clips or fasteners. If it's stuck, gently wiggle it side-to-side while pulling. Don't twist it — just pull straight out.

Step 2: Inspect the Control Valve Stem

Look at the metal shaft (valve stem) sticking out from the control panel. It should have a flat D-shape profile. Wipe away any grease or food residue with a damp cloth — a clean shaft ensures the new knob seats properly and won't slip during use. Check that the valve stem isn't bent or damaged. If it is, you've got a bigger problem requiring valve replacement.

Step 3: Align the New W10339442 Knob

Look inside the back of your new knob — you'll see a D-shaped opening that matches the valve stem. The flat side of the D must line up with the flat side of the shaft. Hold the knob so the indicator line or marking points to the OFF position on your range, then align the D-shape opening with the stem.

Step 4: Push the Knob Firmly Into Place

Once aligned, push straight in until the knob seats completely against the control panel. You should feel it slide smoothly onto the shaft and stop when it's fully seated. Give it a gentle tug — it shouldn't pull off easily. Turn it through all positions (off, low, medium, high) to verify it clicks into place at each setting and doesn't slip on the shaft.

Step 5: Test Each Burner Setting

Turn the new knob to the LITE position and verify the igniter clicks and the burner lights. Test each heat setting to ensure the valve opens and closes properly. The knob should turn smoothly with distinct click stops at each position. If it spins freely without resistance, remove it and check the D-shaft alignment again — one side might not be fully seated.

Testing After Installation

Run through every burner position twice. Listen for the distinct click at each setting. The knob should stay wherever you set it without drifting. Light the burner and adjust from high to low — the flame should respond immediately to knob movement. If you're replacing multiple knobs, verify each one before moving to the next.

Frequently Asked Questions

Will this W10339442 knob fit my Whirlpool or Maytag gas range?

This knob fits dozens of Whirlpool and Maytag models including WFG320M0BB0, WFG505M0BS0, WFG510S0AB2, and MGR8800FZ0. Check your range's full model number (located inside the oven door or on the back panel) against the compatibility list. The knob replaces original part numbers WPW10339442, AP6019877, 2311008, and PS11753188.

My new knob feels loose — is that normal?

No. A properly installed control knob should fit snugly without wobbling. If it feels loose, pull it off and check that the D-shaped opening is fully aligned with the valve stem's flat side. Also inspect the valve stem itself — if it's worn or rounded, the knob won't grip properly and you'll need to replace the control valve assembly, not just the knob.

Can I mix different knob styles on the same range?

While they'll physically fit if they're compatible with your valve stems, mixing knob styles looks mismatched and can make it harder to identify which knob controls which burner. All W10339442 knobs are identical, so if you're replacing just one damaged knob, it'll match your existing ones perfectly. If several are worn, replace them all at once for a uniform appearance.