To remove the bottom end of a 1991 Mercury Classic 50 outboard motor, start by disconnecting the battery and draining the gear oil. Then, remove the lower unit by loosening the bolts that secure it, typically found on the anti-cavitation plate and the side of the unit. Carefully lower the lower unit straight down to avoid damaging the shift shaft. Finally, you may need to remove additional components, like the propeller and exhaust housing, depending on your repair needs.
Remove vent and drain plugs. Drain oil. Fill from bottom until the new gear oil comes out of top vent hole. Install drain plugs.
The 45 and 50hp model Mercury Classic Fifty requires a 50:1 fuel, to 2 cycle oil mix. This is roughly one pint of oil, to six gallons of fuel.
If OB is listed as serial number prefix, it would be a 1987 year model.
Fifty Classic Climbs of North America was created in 1979.
The serial number OC121590 indicates that your Mercury 45 HP Classic Fifty outboard motor was likely manufactured in 1976. Mercury outboard motors typically use a coding system where the letters and numbers in the serial number correspond to the year of production. For more precise information, you can consult a Mercury outboard motor reference guide or contact a Mercury dealer.
The ISBN of Fifty Classic Climbs of North America is 0-87156-292-8.
Sea foam is good for any outboard motor and you can tell the difference between tanks of gas if you stop using it. 1 ounce per gallon is reccomended by manufacturer, and that is how i mix it for my classic fifty.
A spin on the classic book. he named it "Fifty Shades Of Gay"
you have to get fifty flags apparently to remove all the boulders.
All planets except Mercury can appear 50 degrees from the Sun.
There are no top 9 or bottom 9. They are all equally likely.
Using Current Massachusetts Regulatory Limit of 0.002 mg/L. (2 ppb) as a starting point and assuming an average 10 ft depth for the lake. The lake would contain (43560 x 10) ft3 of water or about 27 million lbs of water, a bit more than 10 million liters To reach the standard would require (.002 x 10,000,000) mg of mercury This would be 20g of mercury, approximately the weight of 4 American nickels At a density of Mercury of 13.6 g/cm3, this would be about 1.5 cm3 mercury