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In case the pressure stays regular, it suggests the lower unit is sufficiently sealed, and no big troubles are present. However, if pressure drops, it implies a possible challenge, and further inspection and repairs could be essential.
The shafts and clutch are carefully and thoroughly inspected to assure effectiveness reliability. All tolerances are checked for clean, exact unit operation. (Johnson and Evinrude outboards usually do not consist of water pump assemblies.)
Within the online video embedded within this short article, the Yamaha lower unit pressure test was done over a Yamaha F115 outboard. However, the video and the action-by-phase Recommendations bundled within this informative article utilize to:
Identify the test port around the lower unit of your outboard motor. The location of this port may vary depending on the make and model of your motor.
Another sections of this guide will even more elucidate the tools and approaches needed to perform this test correctly.
We just need to have to eliminate the bottom drain screw after which website take out the highest vent screw within the gear case. Let all the previous gear lube drain out of your case.
Pressure testing a gear case on an inboard like an Alpha 1 lower unit is largely the same procedure. The greatest distinction is going to be while in the location from the drain and vent screws.
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It is possible to Do it yourself pressure test lower units as it will not be a hard thing to do. We're essentially gonna be Placing pressure to the gear case. Then we watch the gauge to check out if it leaks down or not.
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