Yamaha Lower System-- 100-Hour Service
Yamaha reduced system equipment lube is drained by eliminating the lower drain screw first and after that the top plug air vent to permit air in. On many designs, both plugs are plainly visible on the lower system, yet on versions with low tide pickups, the forward pickup will need to be eliminated to access the drainpipe plug. Utilize an appropriately sized screwdriver aided by a wrench if required to loosen these screws which should be rather tight. An influence vehicle driver and hammer might be needed relying on that serviced your engine last. The drain screw has a magnetic suggestion, so evaluate the plug after elimination to see if heavy deposits exist. Some fine shavings are normal, but chunks or a big amount of metal is reason for additional examination. Have a drain pan and also added rags useful as gear lube will certainly begin running down the skeg as soon as you get rid of the upper vent plug. Be sure to accumulate the fiber gaskets from both plugs after removal, as these are not multiple-use as well as ought to be disposed of.
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Allow a number of minutes with the engine tilted all the way down to completely drain the old gear oil. Like your engine oil, inspect the invested oil for proof of water invasion or various other contamination or steel. If you have actually purchased one of PartsVu's useful reduced system oil modification sets you will certainly currently have brand-new gaskets, oil, and also a pump. Screw the pump into the lower drain hole and then link it to the quart of Yamalube gear oil or HD equipment oil depending on your model. Begin pumping oil into the lower unit till oil begins to move from the air vent plug on top. Stop pumping and wait a couple of minutes for all the air bubbles to function themselves out of the gearcase. After this brief time out, pump a couple of more pumps till clean gear oil without bubbles is streaming from the vent plug. With a fresh fiber gasket in place, install and also torque the leading vent plug. Loosen your fill tube from the lower drainpipe plug and rapidly swap in the lower drainpipe plug with a brand-new gasket. Torque to spec and also re-install the lower water pickup screen if appropriate.