50 to 1
50-1
The 15 horsepower Mercury outboard motor does not have a water pump. The outboard motor is air cooled and does not have a need for circulating water.
The serial number OC111736 for a Mercury 15hp outboard motor indicates that it was manufactured in 1981. Mercury outboard motors typically use a coding system where the first letter represents the year of manufacture, and "O" corresponds to 1981 in this case. For precise confirmation, you can also contact a Mercury dealer or refer to an official Mercury outboard serial number guide.
A 15 hp Mercury outboard, serial number OD248758, would be a 1993 year model.
You can get it here: http://www.selffixer.com/outboard.motors/mercury/1986plus.Mercury.6-8-9.9-15HP.2-Stroke.Service.Manual.htm
70 LBS
what is the oil/fuel mixture for 1975 15hp johnson
Your motor is made by Chrysler, Model# VWB52119b is a 15hp, 1981-2
50:1
Depending on the year model, a 15 hp Johnson outboard is listed as having a dry weight of 70 - 85 lbs.
The points gap for a 1977 Mercury Mariner 15hp outboard motor is typically set at 0.020 inches (0.508 mm). It's important to ensure that the points are clean and properly adjusted for optimal engine performance. Always refer to the specific service manual for detailed instructions and specifications.