How to Change Mercury 40HP 2-Stroke Gearcase Lube
Follow these steps to learn how to change gearcase lube in a Mercury 40HP 2-stroke outboard.
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Kid-Friendly Outboard Maintenance Jobs
Teach your kids how to do basic outboard engine maintenance. Here are 5 easy boat motor maintenance repair jobs for kids.
How to Check for Water Intrusion in Boat Fuel
Tips for inspecting boat fuel and fuel tanks for water intrusion and what to do if you find it.
Outboard Engine Storage Oil Change Tips
Do you have to change the oil in an outboard engine before putting it away for storage? Yes you do, and here's why.
How to Change Mercury 40HP Gearcase Lube
How to change the lower unit oil in a Mercury 40HP outboard motor and pressure test the gearcase. 
Mercury 40 Outboard Engine Oil Change
Step-by-step walkthrough with video on how to change the motor oil and filter in a Mercury 40HP four-stroke outboard engine.
How to Change Mercury Tracker 25 Gearcase Oil
How to change the lower unit oil in a Mercury Tracker 25EL outboard motor. Step-by-step guide with video on changing Mercury outboard gearcase oil.
Yamaha F225 Gearcase Oil Change
Step-by-step walkthrough with video on how to change the lower unit oil in a Yamaha F225 outboard engine. 
Yamaha F225 Oil Change
Follow our step-by-step guide with video on how to change the oil in a Yamaha F225 outboard.
Diagnosing a Bad Outboard Thermostat
Got water mixed in with your outboard's engine oil? Before you panic, test out the thermostat(s) to see if that's the problem. Here's how to quickly diagnose a bad outboard thermostat.

 

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