A 1991 115 hp Johnson VRO outboard motor typically weighs around 330 to 350 pounds (150 to 159 kg). The exact weight can vary slightly depending on specific model variations and configurations. This weight includes the motor itself but does not account for additional accessories or equipment that may be attached.
If not using the VRO system, a 50:1 ratio is required, this is roughly one pint of 2 cycle oil to six gallons of fuel.
'92 Johnson 115s are VROs which will vary fuel"oil ratio if operating properly. At idle, should be the 50:1 std. up to 100:1 at WOT. Some owners bypass oil-side of balky VRO pumps and pre-mix. Pretty bullet-proof motor if no VRO problems and seasonally maintained.
Fuel ratio is 50:1
more than likely 50 to 1
How much oil do I use per gallon of gas for a 40 HP Johnson motor
If it is an oil injected, (VRO) model, add nooil to the fuel. If running without the the oil injection system, use a 50:1 fuel to oil ratio, roughly one pint of 2 cycle oil, to six gallons of fuel.
This engine should have a VRO pump and if it has been bypassed the mixture is 50:1
The Johnson outboard models equipped with VRO, (varible ratio oiling), have an onboard oil reservoir. Use a good quality, TC-W3 rated, 2 cycle oil. It is also good practice to not mix various brands of oil in the VRO tank, as reactions of additives in certain brands can lead to filter gelling.
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