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Answers to some of your Yamaha Marine products questions


No, E15 or E85 should not be run in any Yamaha Outboard. For more information refer to the Fuel & Fuel System section of Maintenance Matters.
No. The Tilt Support Lever is to be used only for storage purposes. The Tilt Support Lever was not designed to withstand the strain of transport and could break causing damage to the Tilt Support Lever and/or other bracket components. Yamaha offers Trailering Support as an accessory for transporting, visit your local Yamaha dealer for more information.
When viewing dealers on the dealer locator within, dealers that sell individual outboard motors will be identified under the Details & Certifications "Full-line Outboards". A dealer that only sells a boat and motor package will be listed as "Yamaha Powered Boat Packages".

Cars are having issues but are somewhat more tolerant due to typical usage patterns and differences in their fuel systems. Major differences are:

  • Modern automotive fuel systems (fuel filler, fuel tank, distribution lines and engine components) are closed or non-vented. Once the fuel is pumped into the tank, there is very little circulation of outside air (containing moisture) into the fuel system.
  • Boats are operated and often stored in a very wet environment increasing the risk of water directly entering the fuel system.
  • Boats have vented fuel systems which allow moisture laden air to circulate into the fuel tank as the fuel is drawn out of the tank and as the fuel expands and n wcontracts during heating and cooling cycles of the outside air.
  • Automotive fuel tanks are typically much smaller than boat fuel tanks and are refilled more frequently. A full tank of fuel in a car or truck, typically 20 - 40 gals, may be used and refilled every week or two. Boat fuel tanks, typically 40 - 100+ gals per tank, may only be refilled once a month during the boating season and typically may sit unused for many months during the off season.
  • Some boats use fiberglass fuel tanks. Polyester resins can be dissolved by ethanol.