there should be two flat head screw plugs in the side down near the prop. there a low plug and a hi plug. U want to fil it up until it come outs the hi plug. use the low plug to drain it as well as fill it. yes its best to fill from the low plug they sell little hand pumps the fit on the gear oil bottle. while ur ein there its best to just change the oil. freash oil never gonna hurt anything. just pump in gear oil from the low whl eontill it starts coming out the top plug, with te motor down as if it was it water trimmed and level
pwd 40
The oil capacity for the lower unit of a 1985 90 hp Johnson outboard motor is approximately 24 ounces (or 0.75 liters) of gear oil. It's important to use the appropriate type of gear oil recommended by the manufacturer, typically a high-quality marine gear oil. Always ensure the lower unit is properly filled and check for any leaks after servicing.
1 qt, just filled mine
remove the plug ! empty oil ! put on it side and fill it slowwwly to let air come out
It is a 2 stroke so it is in the gas and the lower unit has gear lube in it which can be checked by removing the upper plug on the side of the unit.
For a 1967 Johnson CD-24D outboard motor, it's recommended to use a 50:1 mix of high-quality two-stroke oil combined with premium gear oil, typically a SAE 90 weight, for the lower unit. Ensure to check the manufacturer's specifications for any specific oil recommendations or requirements for your model. Always replace the gear oil annually or after prolonged use to maintain optimal performance.
put engine down. remove bottom fill screw, top vent screw. fill/squeeze new oil into bottom screw until oil comes out vent screw..done !
The oil sending unit is located slightly lower than the distributor on the engine block.
There isn't a need to check the oil in the compressor. Oil is suspended in the refrigerant to keep the internal parts of the unit lubricated. If you're seeing oil on the lines or coil of the unit, you may have a leak. Be sure to get it checked before it does serious damage to the unit.
check your dip stick to see if your engine oil is too low. also check oil sending unit
If the horsepower of your Mercury outboard lower unit is 75 and below, SAE 80W90 Gear Lube is recommended.
Remove vent and drain plugs. Drain oil. Fill from bottom until the new gear oil comes out of top vent hole. Install drain plugs.