150 Hp EFI 2-stroke Yamaha ox66 2003 year model
with tools.
The water pump on an outboard motor is located low down on the skeg. To replace it, you have to remove the lower unit. The impeller water pump is a housing attached to the upper unit, surrounding the shaft. It must be replaced exactly right, so obtaining a proper servicing manual is strongly recommended.
how do you change a water pump on a 1985 Yamaha yz 250
A Mercury outboard water pump is a engine cooling system. A outboard water pump is what blows steam through to get the car cool,
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.
Every two years to be safe
Sprinkle liberally a vile of gypsy tears
You will probably have to drop the lower end of the outboard. Its sound hard but really it is usually quite simple. The pump is nothing more than rubber impeller on a brass collet.
does the lower unit need to be removed to replace the water pump on a 1995 Johnson 115 hp outboard engine
87 Yamaha YZ250
While there are several causes of overheating, the two most common reasons, by far, would be a damaged or worn water pump, and or a faulty thermostat(s).
Like most outboard motors, the Yamaha is water cooled. It takes water in from the bottom of the prop housing and circulates it through the system to cool the engine and lower transmission. The pump that provides the power to do this has an impeller (usually made of neoprene). More than likely, the impeller needs to be changed. Also, if this has been an ongoing problem, there is no telling what other heat related problems will need to be addressed.