GROUND DIVISION
DIRECTORATE OF ANALYSIS AND PREVENTION
U.S. ARMY COMBAT READINESS CENTER
FORT RUCKER, ALABAMA

Properly preparing your motorcycle for winter storage can save time, headaches and money, especially once nice weather rolls around and the riding season begins. Since every motorcycle features different designs and specifications, these instructions provide a general overview of the process. You should always refer to your motorcycle owner's manual and repair manual for additional information.

Step 1: Give It a Transfusion

Change the oil after you complete your last ride of the season. Oil serves as the lifeblood of the engine. Providing a fresh transfusion of new oil ensures your bike is ready to roll come spring. Each motorcycle is different, so consult your owner's manual or repair manual for the specifics (particularly the type of oil, size of the oil filter and amount of oil) for your model. If you are mechanically inclined, clean the carburetors to prevent them from clogging during the winter. If you plan to store your bike for more than three months, this step proves highly beneficial. A quick internet search of your specific motorcycle model should provide enough additional information regarding how to remove and clean your carburetors.

Step 2: Give It a Bath

Cleaning the previous season's grit off your paint ensures it will not damage the finish during the winter. Using soap, a sponge, a bucket and water, thoroughly wash the dirt, grime and bugs off your motorcycle and leave it in the sun to dry.

Step 3: Give It a Drink and a Shot

A half-empty fuel tank and untreated gas can create major, expensive issues over time. A full fuel tank helps prevent rust from forming inside, and treated gasoline prevents gunk and varnish from building up inside the engine. After your bike dries completely from the washing you gave it in Step 2, remove the fuel cap, grab a gas can and give the motorcycle a “drink” by filling the tank three-quarters full. After consulting the directions on the fuel stabilizer, give the tank a “shot” by pouring the appropriate amount into the fuel. Then, fill the remainder of the tank with gas to help prevent the inside from rusting during the winter. After replacing the gas cap, start your bike and let it run for about five minutes so the stabilizer has a chance to treat the entire fuel system.

Step 4: Put It to Bed

Drive your motorcycle to its winter storage location, preferably a warm, dry spot such as a garage or shed. If you lack a garage or shed, a parking spot will suffice. Turn the motorcycle off and allow the engine and mufflers to cool. If possible, set the bike on jack stands just high enough to break contact with the ground, or place carpet or cardboard under the tires to save wear and tear and prevent flat spots. Fill your tires to the manufacturer's recommended psi (found in your owner's manual or swingarm sticker). If you do not place your bike on jack stands, check for flat spots before operating the motorcycle again.

Step 5: Protect It from Unwanted Guests

Critters love to climb into dark, cozy locations — like a motorcycle muffler — during the winter months. To prevent pests from nesting in your mufflers, insert the recommended motorcycle exhaust plugs. If you lack motorcycle exhaust plugs, simply place a plastic bag over your muffler and use a rubber band to secure the bag.

Step 6: Prepare It for a Bypass

For exact instructions, refer to your owner’s manual or repair manual. Remove the connectors from your battery and lift the unit out of the battery case. Remember the terminal where the red wire was attached (and remember that red is positive).

Step 7: Connect It to a Bypass Machine

A trickle charger is highly recommended to provide a steady, low stream of electricity to the battery, enabling it to maintain a charge through long periods of inactivity. Follow the instructions for connecting your battery to the charger, ensuring the clamps do not touch. Do not forget to plug in the charger!

Step 8: Tuck It In

Finally, cover your motorcycle. Use a cover designed specifically for your bike. It should consist of a breathable material that will not trap moisture. For riders storing motorcycles outside, this step is highly suggested and can be augmented by adding a weather-resistant or waterproof tarp. If storing your bike outside, firmly secure the cover to prevent the wind from removing it. A cover helps shield the bike from the elements, namely snow, ice and other particles that may scratch the paint or cause rust. If you store your motorcycle indoors, the cover adds an extra layer of protection, even though your bike will not face direct exposure to winds or snowstorms. Your motorcycle is now properly prepared for its winter hibernation.

One Final Note

If you plan to store your motorcycle for longer than three months, it is a good idea to reinstall the battery, remove the muffler covers and start the bike about once a month, letting the engine run for five to 10 minutes. Rev the engine a few times to help clear stagnant gasoline from the carburetors, then shut off the engine and allow it to cool. Afterward, repeat Steps 5 through 8. See you again when the riding season begins!