Where is the reserve fuel tank switch indicator located on a motorcycle?
2 Answers
The fuel tank switch handle of a motorcycle has an arrow, and there are three indicators on the fuel tank switch: one is a half-filled cup of water, one is a full cup of water, and the other is a dot. The half-filled cup of water represents the reserve fuel tank. Fuel selection based on compression ratio: According to the compression ratio, choose the appropriate fuel: for a compression ratio of 9 or below, use 90 octane; for a compression ratio above 9, use 93 or 97 octane; for a compression ratio above 10, use 120 octane, though this grade of gasoline is rarely available on the market. Vehicles with low compression ratios should avoid using high-octane fuel, as it can lead to higher fuel consumption, knocking, lack of power, and delayed ignition timing. Fuel for regular motorcycles: Generally, 92 octane gasoline is suitable for regular motorcycles, while fuel-injected models can use 95 octane gasoline. As for engine oil, it is recommended to use fully synthetic motorcycle-specific oil.
As a seasoned motorcyclist with over a decade of riding experience, I know the location of the reserve fuel tank switch indicator is crucial. This switch is commonly called the RES switch, representing reserve mode. When your main fuel tank runs empty, turning it activates the remaining fuel. The indicator position varies by bike model, often found under or on the side of the fuel tank, such as near the seat or the handle near the footrest. On my Suzuki, there's a clear "RES" marking on the left frame. I recommend riders regularly check this switch for looseness or rust, as long periods of disuse may cause it to jam, affecting its function in critical moments. If you can't locate it, consult the user manual or brand forums, as positions differ across motorcycles like Harley-Davidson and Yamaha. During maintenance, remember to clean the switch to ensure smooth fuel flow and prevent issues during long trips.
