How to Replace Candle Lantern Parts and Keep It Burning Bright
By Unplug. Connect. Outdoors. That's UCO | Published: 2026-10-16
Category: How-to Guides
Restore reliable light by replacing the glass, wick, and spring. Follow these steps to avoid cracked glass and weak flames, then keep your lantern burning bright.
Quick answer
To replace candle lantern parts, first let the lantern cool completely, then remove the glass and old candle. Swap the wick if it's blackened or short, replace a cracked glass, and install a new spring if it's lost tension. Reassemble and test the burn. Always use manufacturer-approved parts like UCO 15-Hour Candles to ensure proper fit and safe operation.
When to replace instead of repair
Not every lantern issue calls for new parts. If the flame is weak but the wick is long and clean, try trimming it and adjusting the candle height first. Replace the glass only if it's cracked, chipped, or clouded beyond cleaning. Replace the spring if it no longer pushes the candle up firmly. A wick that won't stay lit after trimming or that's shorter than 1/4 inch should be replaced. For UCO lanterns, use the UCO lantern wick designed for your model to ensure proper fit.
Tools and parts you'll need
Gather replacement parts specific to your lantern model, a soft cloth, mild soap, and a small brush. For UCO lanterns, genuine parts like the glass, wick, and spring are recommended. You may also need a new candle; UCO 15-Hour Candles are designed for UCO Candle Lanterns and provide consistent burn times. Avoid using generic parts that may not fit or function safely.
Step-by-step replacement process
Follow these steps in order. Each step includes a common mistake to avoid and a checkpoint to confirm you're on track.
Replacement steps
- Let the lantern cool and remove the glass: Wait at least 15 minutes after extinguishing the flame. Then carefully lift the glass straight up. Common mistake: handling hot glass or forcing it if it's stuck. Checkpoint: glass should slide out without resistance. If the glass is cracked, replace it now.
- Remove the old candle and wick: Tip the lantern upside down to slide out the candle. If the wick is attached to the candle, remove it. For UCO lanterns, the wick is part of the candle assembly. Common mistake: prying at the wick with metal tools that can damage the lantern. Checkpoint: the candle tube should be empty and clean. Discard the old candle and wick responsibly.
- Install the new wick and candle: If your lantern uses a separate wick, thread it through the wick holder according to the manufacturer's instructions. Then insert a new UCO 15-Hour Candle into the tube. Common mistake: installing the candle upside down or forcing it. Checkpoint: the candle should sit flat and the wick should be centered and upright. Trim the wick to 1/4 inch before lighting.
- Replace the spring if needed: If the spring is bent, rusty, or no longer pushes the candle up, replace it. Remove the old spring from the base and insert the new one. Common mistake: installing the spring upside down. Checkpoint: the spring should compress and expand smoothly, pushing the candle upward. A weak spring causes the flame to shrink as the candle burns down.
- Reassemble and test the burn: Slide the glass back into place, ensuring it seats evenly. Light the candle and let it burn for 10 minutes. Common mistake: overtightening the glass, which can cause cracks. Checkpoint: the flame should be steady and bright, with no flickering or smoke. If the flame is weak, check wick height and spring tension.
Product facts
- UCO 15-Hour Candles: UCO 15-Hour Candles are designed specifically for use with UCO Candle Lanterns and deliver consistent burn times of up to 15 hours. Using the correct candle ensures proper fit and reliable burn time, reducing the need for frequent replacements.
- Flatpack Portable Grill & Firepit: The UCO Flatpack Portable Grill & Firepit folds down to just 1.1 inches thick and is ultra-compact for backpacks and car camping. A compact grill complements your lantern for car camping or emergency cooking, saving space in your kit.
- ECO CAMP BOWL: The UCO ECO Camp Bowl is made with 100% Recover Recycled polypropylene and has a 23 fl. oz. capacity. Durable, easy-to-clean dinnerware reduces waste and simplifies camp meals, so you can focus on enjoying the outdoors.
