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If you attempt to service the product yourself, we suggest you order the service manual for that model. The service manual
outlines the correct procedures to follow. It is written for the trained mechanic, so there may be procedures you don't
understand. Do not attempt repairs if you do not understand the procedures.
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There are special tools and equipment that are required to perform some repairs. Do not attempt these repairs unless you
have these special tools and/or equipment. You can cause damage to the product in excess of the cost a dealer would
charge you.
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Also, if you partially disassemble an engine or drive assembly and are unable to repair it, the dealer's mechanic must
reassemble the components and test to determine the problem. This will cost you more than taking it to the dealer
immediately upon having a problem. It may be a very simple adjustment to correct the problem.
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Do not telephone the dealer, service office or the factory to attempt for them to diagnose a problem or to request the repair
procedure. It is difficult for them to diagnose a problem over the telephone.
Your authorized dealer is there to service your power package. They have qualified factory trained mechanics.
It is recommended you have the dealer do periodic maintenance checks on your power package. Have them winterize it in the
fall and service it before the boating season. This will reduce the possibility of any problems occurring during your boating
season when you want trouble free boating pleasure.
Inspection
Inspect your power package often, and at regular intervals, to help maintain its top operating performance and correct potential
problems before they occur. The entire power package should be checked carefully, including all accessible engine parts.
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Check for loose, damaged or missing parts, hoses and clamps; tighten or replace as necessary.
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Check plug leads and electrical leads for damage.
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Remove and inspect the propeller. If badly nicked, bent, or cracked, contact your authorized Mercury MerCruiser dealer.
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Repair nicks and corrosion damage on power package exterior finish. Contact your authorized Mercury MerCruiser dealer.
MerCruiser Gas Sterndrive Inspection and Maintenance Schedule
New sterndrive installations may require as much as 470 mL (16 fl oz) of gear lube added to the monitor bottle during the
break‑in period (20 hours of running time). It is important to monitor and maintain the gear lube level during the break‑in period.
During the initial drive installation, air may be trapped in the top of the driveshaft housing. This void is filled from the gear lube
monitor during the sterndrive break‑in period. As the air is purged from the sterndrive through the monitor bottle, the lube level
in the bottle will drop.
Daily Checks
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Check the engine oil level
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Check the power steering fluid level
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Check the power trim pump fluid level
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Check the sterndrive gear oil level
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Check the lanyard stop switch
After Each Use
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Flush the engine with fresh water, brackish or saltwater use only
Weekly Checks
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Check the seawater inlets for marine growth
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Clean the seawater strainer, if equipped
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Check the coolant level, if equipped
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Inspect the anodes
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Verify the operation of the MerCathode module, if equipped
Every Two Months or 50 Hours
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Lubricate the engine coupler
Annually or 100 Hours
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Lubricate the engine coupler
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Lubricate the propeller shaft splines
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Clean the gauges and check wire connection—dealer item
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Check the torque of the propeller nut
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Power packages that are used extensively at idle or trolling speeds must have the coupler lubricated every 50 hours.
90-8M0128976
MAY 2017
eng
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Section 4 - Maintenance
Page 47
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