SERVICE MANUAL NUMBER 26
TROUBLESHOOTING
WARNING
When running engine with boat out of water, be certain that area in vicinity of
propeller is clear and that no person is standing nearby. As a precautionary
measure, it is recommended that the propeller be removed.
CAUTION
DO NOT run engine above 1500 rpm, as suction created by seawater pickup pump
may collapse water supply hose and cause engine to overheat.
WARNING
Be sure that engine compartment is well ventilated and that no gasoline vapors are
present to prevent the possibility of a FIRE or EXPLOSION.
WARNING
DO NOT leave helm unattended while performing idle speed adjustment.
Used Spark Plug Analysis
Use the following illustrations for determining serviceability of spark plug. Spark plug
condition also can suggest a variety of possible engine malfunctions and, therefore, can
indicate needed engine repairs. When old plugs are replaced, replace entire set. Perform
plug service only on those plugs suitable for additional service, using the following
procedures:
1.
2.
3.
Remove any oil deposits with solvent and dry plugs thoroughly.
Open electrode gap wide enough to permit cleaning and filing.
Remove combustion deposits from firing end of spark plug with a plug cleaner. Blow off
with compressed air to remove abrasives.
4.
5.
File electrode surfaces to restore clean, sharp edges. Again remove filings with com-
pressed air.
Reset gap to specifications by bending only side electrode with proper tool.
IMPORTANT: When working on engine, spark plug holes and carburetor throat
should be kept covered to prevent foreign objects from entering combustion
chamber.
Index
90-861329--1
MARCH 1999
Page 1C-3
| Categories | Mercury MerCruiser Manuals |
|---|---|
| Tags | Mercury MerCruiser 181 CID |
| Model Year | 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011 |
| Download File |
|
| Document File Type | |
| Copyright | Attribution Non-commercial |
(6 votes, average: 5 out of 5)
Marine readers have rated Mercury MerCruiser GM 4 Cylinder 181 cid 3.0L Marine Engines Service Manual Number 26 5.0 out of 5.0 based on 6 product reviews. Thanks for sharing this material. Helps a lot after suffering with bad mechanics. spend too much money and nothing very good
great manual, makes impossible jobs possible. without a manual you can not do the job, a must have.
Great resource. Excellent information provided.
Need help to install automate choke
Need help to instal automate choke