Don’t Overlook the Water Pump
As is the case with any machinery, outboard motors require occasional basic maintenance to run properly. Rather than waiting for something to go irreparably wrong, take a proactive approach to motor maintenance by making simple engine observations. Get to know the sound of your well-oiled outboard motor, and learn to recognize any deviations from that norm.
A functioning water pump is particularly important, as it draws water out of the engine and acts as a cooling agent. Without a water pump most 2-cycle engines would overheat in no time. To replace an ailing water pump, begin by removing the bolts from the bottom portion of the motor. Use an engine vice to securely mount the lower engine housing, making sure that any electrical wiring between the housings is disconnected.
Remove the water pump housing, and then replace the impeller. Beneath the impeller you’ll find three gasket seals; remove them. Use some of your supply of bulk outboard motor oil to lube the gaskets before slipping them back into place. Put the housing back into place, and then reconnect the wiring. You’ve just increased the lifespan of your outboard motor.
For rapid acceleration and blazing speed, boaters the world over turn to lightweight, compact outboard motors. These motors have progressed by leaps and bounds – especially in the last 40 years – in terms of increased efficiency. By the late 1970s, the world was beginning to gain an environmental conscience. As a result, boaters began scouring the outboard motor landscape for engines that created less pollution.
If you’re the kind of person who likes to do it yourself, here are some suggestions for performing maintenance on your outboard motor. First, it’s important to note that present day marine equipment is quite sensitive, and represents advanced technological machinery. Make sure to have the proper training before performing maintenance on these sensitive technological systems. Don’t perform maintenance that’s not covered in the service manual unless aware of the procedures and precautions, otherwise, your safety could be at risk. There are simple procedures, like premixing fuel with gasoline and 
When looking through the standard owner’s manual for a boat engine, it’s important to note that the engine oil capacities listed are approximate. In addition, the engine oil capacity is reflective of the entire lubrication system. For this reason, when filling the engine, sometimes boat owners will notice that the engine is filled before the indicated amount of oil is used. Once oil is inside the engine, it’s quite difficult to ensure that all the oil is drained during an oil change. The residual oil left in the engine is the reason that it cannot be filled with the recommended amount of oil.
The average outboard engine runs for about 1,500 hours before requiring significant maintenance. While this number might seem a little surprising, the average owner only uses their outboard for about 200 hours per year, thus, the average outboard motor can be expected to last 7-8 years, which isn’t an unreasonable amount of time. However, it is possible to ensure an outboard lasts much longer with regular maintenance, and a few due diligence practices. For example, with two stroke outboard engines, it’s important to have the right mixture of gasoline to 
