MerCruiser Scorpion 350, User Manual

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Section 5 - Maintenance
90-899883175 DECEMBER 2007 Page 53
All Models Capacity Fluid Type
Engine oil (with filter)
4.25 L
(4.5 US qt)
Mercury Full‑Synthetic MerCruiser Engine Oil 20W‑40
Changing Oil and Filter
See
Maintenance Schedule
for the change interval. Engine oil should be changed before
placing the boat in storage.
IMPORTANT: Change engine oil when the engine is warm from operation. Warm oil flows
more freely, carrying away more impurities. Use only recommended engine oil (refer to the
Specifications section).
Easy Engine Oil Drain System
NOTE: The boat must be out of water to perform this procedure.
1. Loosen the oil filter to vent the system.
2. Allow sufficient time for the oil to drain from the filter down into the engine block.
3. Remove the bilge drain plug.
4. Pull tether through the bilge drain.
f
e
d
c
b
a
7284
a - Bilge drain plug
b - Tether
c - Clip
d - Oil drain hose plug
e - Oil drain hose
f - Bilge drain flange
5. Place the oil drain hose in a suitable container.
6. Remove the drain plug from the oil drain hose.
7. After oil has drained completely, install the drain plug in the oil drain hose.
8. Push the hose through bilge drain and install the plug.
9. Replace the engine oil filter. See
Changing the Oil Filter
.
Engine Oil Drain Pump
1. Loosen the oil filter to vent the system.
2. Remove the dipstick.