SERVICE MANUAL NUMBER 24
MAINTENANCE
20-Hour
Break-In Period
IMPORTANT: The first 20 hours of operation is the engine break-in period. Correct
break-in is essential to obtain minimum oil consumption and maximum engine per-
formance. During this break-in period, the following rules must be observed:
•
Do not operate below 1500 rpm for extended periods of time for first 10
hours. Shift into gear as soon as possible after starting and advance throttle
above 1500 rpm if conditions permit safe operation.
•
•
Do not operate at one speed consistently for extended periods.
Do not exceed 3/4 throttle during first 10 hours. During next 10 hours, occa-
sional operation at full throttle is permissible (5 minutes at a time maximum).
•
•
Avoid full throttle acceleration from IDLE speed.
Do not operate at full throttle until engine reaches normal operating tempera-
ture.
After Break-in Period
To help extend the life of your Mercury MerCruiser power package, the following recommen-
dations should be considered;
•
Use a propeller that allows the engine to operate at or near the top of the
maximum rpm range (refer to “Specifications” section) when at full throttle
with a normal boat load.
•
Operation at 3/4 throttle setting or lower is recommended. Refrain from pro-
longed operation at maximum (full throttle) rpm.
End of First Season Checkup
At the end of the first season of operation, an Authorized Mercury MerCruiser Dealer should
be contacted to discuss and/or perform various scheduled maintenance items. If you are
in an area where the product is operated continuously (year-round operation), you should
contact your dealer at the end of the first 100 hours of operation, or once yearly, whichever
occurs first.
Index
90-861327--1
OCTOBER 1999
Page 1B-13
| Categories | Mercury MerCruiser Manuals |
|---|---|
| Tags | Mercury MerCruiser 305 CID, Mercury MerCruiser 350 CID |
| Model Year | 1998, 1999, 2000, 2001 |
| Download File |
|
| Document File Type | |
| Copyright | Attribution Non-commercial |
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