. On all motors except the 2. To be honest, a complete overhaul is recommended, because corrosion and damage may have occurred if moisture was in the gearcase long enough. Also, significant amounts of water mixed with the oil will give the appearance of an overfilled condition. Cleaning the gearcase will also help you spot potential. Taking Care not to damage the driveshaft and the water tube, separate the lower unit from the exhaust housing by pulling straight downward.
If any oil leaks out or water enters, either the propeller shaft seal must be replaced or the gear case must be disassembled, inspected and completely overhauled. The gearcase contains the propeller shaft, the driven and pinion gears, the drive shaft from the powerhead and the water pump. If necessary for service or access, remove the propeller, for details refer to the procedure in the Maintenance and Tune-Up section. The last, most important task you can perform to help keep your gearcase in top shape, is to flush the inside and outside of the gearcase after each use. Remove the two screws securing the lower unit to the exhaust housing. And, water, mixing with or replacing the oil in the gearcase will wreak havoc with the shafts and gears contained within the housing. Then, refill the unit with fresh oil and test the outboard by using it! If necessary for service or overhaul, drain the gear oil from the gearcase.
Make sure all mating surfaces are clean and free of debris, corrosion or damage. Performing the scheduled maintenance is very important. Thoroughly inspect the gearcase and exhaust housing for signs of damage. If you suspect water in the gearcase, start by draining and closely inspecting the fluid refer to the procedures found in the Maintenance and Tune-Up section. But, in some cases, if the leak was caught in time, and there is no significant wear, damage or corrosion in the gearcase, the propeller shaft seal can usually be replaced with the gearcase still installed to the outboard. Download a manual straight to your computer in just seconds.
Apply a light coat of clean liquid soap to the water tube grommet. Watch the fluid level closely after the test, and for the first few outings. Install the gearcase, while carefully aligning the water tube in the grommet and the driveshaft s~linesto the crankshaft shaft. Again, details are found in the Maintenance and Tune-up section, look under Flushing the Cooling System. On models equipped with shifting capabilities, the forward and reverse gears, together with the clutch, shift assembly, and related linkage, are all housed within the case. Note: from the list of manuals below, we recommend downloading the factory service manual for your model engine first. Not only is it important make sire the oil is at t k proper level not above or below , but it is important to check the oil for signs of contamination from moisture.
The second most important task for proper gearcase maintenance is checking and maintaining the oil inside the case. For safety, disconnect the spark plug lead, then ground it to the cylinder head. If oil can get out, then water can get in. Once you've rinsed the outside, hook up a flushing device and do the same for the inside. Remove any sand, silt or dirt that could potentially damage seals or clog passages. Follow the Maintenance Schedule recommendations to ensure that the engine is in peak operating condition.
The single most important task for proper gearcase maintenance is inspecting it for signs of leakage after each use. If necessary, turn the propeller shaft slowly clockwise when viewed from the shaft end in align the splines. It compensates for the initial wear that occurs during the life of the engine. Water entering the gear case will usually cause the oil to turn a slightly milky-white color. . . .
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