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Mercury MerCruiser MCM 7.4L MPI User Manual

Mercury MerCruiser MCM 7.4L MPI
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MAINTENANCE SERVICE MANUAL NUMBER 23
Page 1B-18 90-861326--1 MARCH 1999
7. Remove oil filler cap from valve rocker arm cover.
75988
a
a-Oil Cap
8. Add required amount of oil to bring level up to, but not over the FULL mark on dipstick.
Changing Oil and Filter
1. Start engine and run until it reaches normal operating temperatures.
IMPORTANT: Change oil when engine is warm from operation, as it flows more freely,
carrying away more impurities.
2. Stop engine.
3. Remove drain plug from oil pan or from oil drain hose.
NOTE: If drain plug is not accessible because of boat construction, oil may be removed
through dipstick tube, using a Quicksilver Crankcase Oil Pump. See Quicksilver Accessory
Guide.
4. After oil has drained completely, reinstall drain plug (if removed) and tighten securely.
5. Remove and discard oil filter and its sealing ring.
75179
70572
a
b
a-Oil Filter
b-Sealing Ring
6. Coat sealing ring on new filter with engine oil, and install. Tighten filter securely
(following filter manufacturer’s instructions). Do not overtighten.
7. Fill crankcase with oil. See “Specifications” for type of oil and quantity.
8. Start engine and check for leaks.
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Mercury MerCruiser MCM 7.4L MPI Specifications

General IconGeneral
BrandMercury
ModelMerCruiser MCM 7.4L MPI
CategoryEngine
LanguageEnglish

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