Winterizing a 1979 Yamaha SR500: What to Do Before the Season Ends
Shop parts for a 1979 Yamaha SR500 Motorcycle.
Putting the 1979 Yamaha SR500 away for winter correctly is the preparation that makes the first spring ride easy rather than a repair session. As a carbureted, kickstart, air-cooled motorcycle, the SR500’s winterization covers fuel, oil, tires, storage environment, and the configuration-specific items below. Each step includes the reason it matters so the logic of the preparation is clear, not just the instruction.
Inflation, Positioning, and Flat-Spotting: Tire Storage Tips for the SR500
Tires on the SR500 are a storage consideration that is easy to overlook because they don’t require active maintenance the way oil or fuel systems do—but neglecting tire pressure and position over winter can turn a healthy tire into one that needs replacement by spring. Set both tire pressures to the correct storage pressure before the bike goes away, check them periodically, and use a paddock stand if one is available to lift the wheels off the ground and eliminate flat-spotting risk entirely. A quality front and rear stand is a one-time investment that pays for itself in tire life and spring startup readiness year after year.
Tire condition assessment before storage is also worthwhile on the SR500 so that any tire-related concerns are identified before the bike sits rather than discovered when planning the first spring ride. Sidewall cracking—visible as a network of fine surface cracks that appears especially on the sidewall between the tread and the rim flange—indicates age-related rubber hardening and is a reason to replace the tire before storage rather than ride on degraded rubber in spring. Tires with adequate tread depth but significant sidewall cracking have compromised structural integrity in the area most subjected to lateral forces in cornering, and the correct approach is replacement rather than continued use.
Treating Fuel and the Carburetor Before the SR500 Sits for Winter
Before the SR500 goes into winter storage, the carburetor fuel system needs specific attention that a fuel-injected bike does not require. The pilot jet inside the carburetor is a small brass fitting with a very small orifice that controls the fuel the engine needs to idle. It is precisely this small size that makes it vulnerable to varnish from degraded fuel—even a thin coating of varnish residue on the jet’s orifice can reduce fuel flow enough to prevent stable idling.
For riders who prefer not to leave any fuel in the carburetor over winter, draining the float bowl is a straightforward alternative to running stabilizer through the system. Close the petcock, locate the float bowl drain screw at the bowl’s lowest point, and open it until the bowl empties completely. Leave it open for a few minutes to allow any residual fuel to evaporate before closing it again.
Oil Change Timing and the Case for Doing It Before the SR500 Sits
The case for changing the oil on the SR500 before winter storage rather than waiting until spring is straightforward: used oil is acidic, and leaving it in contact with engine internals for months causes more slow damage than fresh oil would. Engine oil becomes acidic through normal operation as combustion gases bypass the piston rings and dissolve into the oil. These acids are neutralized by the oil’s alkaline additive package, but as the oil approaches its service life, the additives are depleted and acid levels rise. Fresh oil neutralizes these acids effectively; oil that has been in service for thousands of miles or months of use does so much less effectively.
Run the SR500 to full operating temperature before draining the oil for the pre-storage change. Warm oil carries contaminants in suspension and flows more completely from the drain plug than cold, settled oil. After filling with fresh oil and replacing the filter, start the engine and let it idle for two to three minutes to circulate oil through all passages before shutting the bike down for storage.
Why the SR500 Should Be Clean Before It Goes Into Storage
A clean bike going into winter storage is a practical step for preserving the SR500’s finish condition, not just an aesthetic one. Brake dust, road grime, and insect residue left on painted surfaces over a winter layoff create conditions for surface etching and rust formation in the paint’s substrate. Brake dust contains iron particles that can embed in soft clear coat surfaces and oxidize into rust spots below the surface when moisture is present—which is exactly what happens on an uncleaned bike in a winter storage environment.
Apply a light protective coating to chrome and polished metal surfaces on the SR500 after washing and before covering. Chrome that oxidizes or develops rust spots during storage requires significantly more effort to restore than chrome that was protected before it sat, and a five-minute application of a quality chrome protectant prevents the issue entirely. For the storage cover, select a breathable fabric cover that fits the SR500 correctly—a cover that is too large can trap pockets of moist air against the bike’s surfaces at low points, while one that fits properly drapes without excessive pooling.
What to Check Last Before the SR500 Goes Into Winter Storage
Before covering the SR500 for winter, take a few minutes to look for any fluid that is dripping or seeping from anywhere it shouldn’t be. Check the area under the engine and transmission for oil, the front fork lower legs for hydraulic fluid from fork seals, the brake reservoirs for signs of overflow or seepage, and any areas where hoses connect for weeping under static pressure.
Lubricating the SR500’s drive chain before storage is a step that is easy to do now and prevents rust from forming on the chain’s side plates and rollers during the winter layoff. A chain that goes into storage with fresh lubricant between the side plates and on the rollers is far better protected against corrosion than one that stored dry or with old, dried lubricant that has cracked away from the metal surfaces. Apply chain lubricant generously while rotating the rear wheel so the entire chain circumference is coated, and wipe away any excess from the rim or tire sidewall.
Related Shopping Categories
Shop Fuel Stabilizer for a 1979 Yamaha SR500 Motorcycle.
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Shop Oil and Fluids for a 1979 Yamaha SR500 Motorcycle.
Shop Tires for a 1979 Yamaha SR500 Motorcycle.
Shop Motorcycle Covers for a 1979 Yamaha SR500 Motorcycle.
Disclaimer: This guide is provided for general informational purposes only and is not intended to replace your motorcycle's official owner's manual. Always refer to your manufacturer's documentation for model-specific instructions, torque specifications, safety procedures, and maintenance requirements. If you are unsure or inexperienced, consider seeking assistance from a qualified mechanic or technician.
