Mercury 250 Pro XS 4-Stroke Maintenance: Spark Plug & Fuel Filter Change + Fixing Engine Alarms!''

In this video, I'm showing you step-by-step how I perform routine maintenance on my Mercury 250 Pro XS 4-stroke outboard. After 475 hours of hard use on Texas and Louisiana bass lakes, it was time to swap out the spark plugs and replace the fuel filter. If your Mercury 4-stroke is running rough, throwing engine alarms, or giving you 5 and 6 beep codes, this simple maintenance can often fix it. I'll also show you what my old spark plugs looked like after nearly 500 hours of fishing and boating. Whether you're running a Mercury Pro XS 250, 225, or 300 regular maintenance is critical to keep your outboard performing at its best. Changing spark plugs and fuel filters is an easy DIY job that can save you money and prevent breakdowns on the water. If you've never done this before, I'll walk you through every step with the exact tools and parts you need for this Mercury 4-stroke service. If you fish lakes like Toledo Bend, Sam Rayburn, or Guntersville, and you run a Mercury Pro XS V8, you NEED to stay on top of maintenance. Don't wait for an engine alarm or rough idle to ruin your fishing trip. Watch this video and learn how to keep your outboard running smooth and strong. Be sure to like, subscribe, and drop a comment if you want more outboard maintenance and bass fishing content from CG WHACK EM'! Time stamps: Intro - 00:00 Spark plug change - 01:16 Fuel filter change - 18:38 Outro - 24:21 #mercury250proxs #outboardmaintenance #mercury4stroke #bassboat #bassfishingtips #boatmaintenance #fixenginealarms #fishingboat #cgwhackem #mercuryproxs #sparkplugchange #fuelfilter #bass