Evinrude outboard motor 15HP 1974 Model. Need a manual or diagram of the gearbox and how the gear shift seal is fitted/replaced. Also need a diagram of how the water pump is connected into the power head.
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Re: gear box oil leak
Here is a website where a manual for you outboard may be purchased. Outboard Marine went out of buisness in 2000 and thus no parts of origial manufacture are support is available . Therir are secondary markets .
THe Lower case splits in half and their is a seal around the prop shiftm which is pressed in. The seal between the cases are cut o-rings which are placed and glued into place with gasket seal.
The water pump is located where the case splits a little bit higher. You must open the little port on the side and take out one of the screws to the connecting shift linkage to split the case. After splitting the case the drive shaft and water pickup tube(s) wil come out of the powwer head or the tubs may stick into the power head which is ok. Place the lower skag into a vice and remove the 4 or 5 screws to the water pump housing. Remove and replace impellor and impellor plate if available. If part(pieces) of the rubber impellor is missing flush out the tubes and the power head to remove them.
When reinstalling the lower unit use a flash light to make sure that the tubes return to the proper place in the power head and the shift lever is resecured.
If you need more assistance, just write back. I was an Outboard motor mechanic for five years about the time of your motor.
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Evinrude used a shift mechanism located in the lower unit that is actuated by a rod up to the linkage in the motor housing. It could be stuck anywhere along the way or the gear that shifts on the shaft could be immobile due to rust and corrosion.
Take the cowling off. Also drop the foot. There wil be a stainless linkage rod that runs the length of the motor that you will have undo to drop the foot. The water impeller will be inside a stainless casing that you will have to disassemble.
Look on the side, of the lower end, (dirveshaft housing) for a small cover, with usually two screws holding it on. Then underneath the cover there is a fitting that connects the linkage. Put a mark with a magic marker on the linkage rod to remember where they line up. Put the motor in neuteral, (not running) and loosen the fitting, it should all seperate after that.
hi obviously a fuel fault someware / when motors are winterised the fuel system is usualy emptied, this causes gaskets and diaphrams to dry out and split try it with the tank filler off /replace the diaphram in the carb and i am pretty shure that will solve the problem /nb / as this motor has stood for a time and does not do much work /outboards love work check the water pump impellor and put a spoonful of oil in a full tank of gas hope this helps merlin v12
Keep an eye on it and put a bucket with paper inside under the motor. You want to know whether the oil is burnt oil from the exhaust or gear lube. You should be able to tell from the color of the oil. Its kind of like soot in a chimney, the exhaust goes through the prop with the oil you added to the gas.
Your best bet is ebay for a replacement user manual. Take a look around, you will come across one... For the meantime, gas oil ratio should be 50 parts gas to 1 part oil, i.e. 50:1. General care: Dont go full throttle for any length of time. Cruise of 3/4 throttle... Always flush engine after use in saltwater, including washing down exterior. Keep spark plugs in good order and check prop for fishing line wrapped around in near the prop hub. Otherwise, get a yearly service and have them check the water pump and replace as needed, get it tuned etc and gearbox oil changed.