Changing Oil in Your Trimmer or Chainsaw: A Step-by-Step Guide

Why Oil Matters for Your Tools

Oil keeps the engine in your trimmer or chainsaw running smoothly. It reduces friction between moving parts and helps your tool last longer. Over time, oil breaks down and gets dirty, so changing it regularly is part of basic maintenance.

What You'll Need

Before you start, gather these items:

• New oil (check your tool's manual for the correct type and amount)
• An oil drain pan or container
• A wrench or socket set (size depends on your tool)
• Clean rags or paper towels
• A funnel
• Safety glasses
• Work gloves

How to Drain the Old Oil

Start by letting your tool cool down if you've used it recently. Never work with hot oil—it can burn you.

Locate the oil drain plug on your engine. This is usually a bolt on the bottom or side of the engine. Place your drain pan underneath it, then use your wrench to loosen and remove the plug. Let the old oil drain completely into the pan. This may take a few minutes.

Once the oil stops dripping, wipe the drain plug clean with a rag and set it aside.

Replacing the Drain Plug

Before you put the drain plug back in, check if it has a washer or seal. If it looks worn or damaged, replace it. Screw the plug back in by hand first, then tighten it with your wrench. Don't over-tighten—just snug enough that it won't leak.

Adding New Oil

Find the oil fill cap on top of or side of the engine. Remove it and set it somewhere clean. Place your funnel in the opening and slowly pour in the new oil. Check your manual for the exact amount—this is important because too much or too little oil can damage your engine.

Once you've added the right amount, replace the oil fill cap and wipe away any spills.

Check Your Work

Wait a minute, then remove the oil fill cap again and check the oil level with the dipstick (if your tool has one). It should be between the minimum and maximum marks. Add a little more if needed.

Start your tool and let it run for a minute to make sure everything works. Check underneath for any leaks around the drain plug.

Dispose of Old Oil Properly

Never pour old oil down the drain or into the ground. Take it to a recycling center, auto parts store, or hazardous waste facility in your area. Many places take used oil for free.

How Often to Change Oil

Check your tool's manual for the recommended schedule. Most trimmers and chainsaws need an oil change every 50 to 100 hours of use, or at least once a year if you don't use them much.