How To Change Oil Omc Cobra 3.0
OMC Cobra oil refill instructions
Instructions on how to make full your stern drive with oil, consummate with photos and tech help
- Lower gearcase photos
- Links to technical drawings
- Step by step oil filling instructions
- Exploded view OMC Cobra drawing
- GLM aftermarket replacement plugs and parts are available
By author Trish Dougherty
| Cobra sterndrive has one cavity where the oil is stored, so all the oil in the upper and lower gearcase must exist changed and filled at the same time. Follow these easy steps to change the oil in your bulldoze.
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| Oil filling diagram Oil filling diagram Start off by locating the lower bleed screw/plug on the lower gearcase. (It is on the starboard side of the lower unit on the cone - shown in photo). Remove this plug using the largest blade flathead screwdriver available. Insert your oil pump as snug as possible into the bleed hole. |
| Lower gearcase upper drain screw location Lower gearcase upper drain spiral Locate the upper bleed spiral/plug (shown in photo), and remove it using the aforementioned flathead screwdriver you used to remove the lower drain screw. Begin pumping oil into the lower bleed hole, and carefully watch the upper drain hole until you see the oil reach this level. When the oil just reaches the upper drain hole, close it upwardly by inserting the upper bleed screw. (Practice Non STRIP the spiral when making certain it is tight enough) |
| Lower unit of measurement oil pump Lower unit oil pump Remove the oil pump from the lower drain hole, and rapidly insert the drain screw/plug. Once again, remove the drain screw from the upper portion of the lower gearcase , and rapidly insert the oil pump into the upper drain hole. Begin pumping oil to proper level on |
| 28404 cover o-ring Dip stick location On the pinnacle side of the upper gearcase , you will meet a embrace, with four big bolts attached to it. In the center of this cover or cap, you lot will meet a 3/four" bore flathead dipstick. Remove information technology, and note where the oil level is. The oil level on an Cobra should exist at the line on the dipstick. If it is not at this line, keep pumping in oil through the lower units upper bleed hole. When the oil reaches the line, put the dipstick back in. Remove the oil pump, and quickly insert the lower units upper drain plug. Make sure this screw/plug is tight, but be careful not to strip the screw. |
| Lower unit oil pump | Oil pump $12.29 |
| 21731 Draining screw washer | Replacement oil draining screw/plug (includes one gasket) P/North 21731 Draining spiral $ix.99OEM 318544 |
| 31171 Gasket | Replacement oil draining screw/plug gaskets (v units) P/N 31171 Gaskets $4.89 OEM 311598 |
| 28404 encompass o-ring two | Replacement pinnacle cover assembly P/N 28404 Embrace assembly $71.89 OEM 914489 |
| 21732 Dipstick | Replacement dipstick for top cover P/N 21732 Dipstick $24.00 OEM 914488 |
Source: http://www.sterndrive.info/id270.html
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