Outboard Motor Maintenance

So you own a Mercury outboard but just haven’t quite kept up on maintenance.  Perhaps you have no idea where you stored the owners manual and are just crossing your fingers that you haven’t forgot any major maintenance items. For anyone who can identify with the above, this article is for you.

Regular engine maintenance is essential to ensuring your engine will provide you with years of trouble-free operation.  Mercury Authorized Dealers have the expertise and training to handle all of your engine maintenance service and needs.  US Boatworks is a Mercury Authorized Premier Dealer with over 30 years experience in repairing and maintaining Mercury Outboard Motors in the Kansas City area.  Please call to schedule your 100 and 300 hour maintenance of your Mercury Outboard or follow the recommended guidelines below.

For the do-it-yourselfer, timely, accurate maintenance is essential.  The maintenance checklist at the bottom of the page is a great reminder of items to be reviewed at both 100 and 300 engine hours.  Next you will find a grease chart for fresh water use to insure the proper product is used on your motor.  Always refer to your specific owners manual or call your authorized Mercury Motors dealer before performing these recommended services.

OILS AND LUBRICANTS  

Oils and lubricants are an integral part to keeping your motor parts moving properly.  Don’t be fooled into buying generic or multi-purpose oils which are inferior to genuine manufacturer oils.  Mercury Oils and Lubricants are specifically engineered for the unique needs of marine engines and rigorously tested to meet high standards. You can get the most out of your engine while having total peace of mind that your engine is being protected when you choose oils manufactured by your engine manufacturer.

GREASE CHART FOR FRESH WATER USE

STEERING SYSTEMS / CABLE, LINKAGES	2-4-C	100 hrs/at least once a yr
THROTTLE AND SHIFT CABLES, LINKAGES	2-4-C	100 hrs
REMOTE CONTROLS	2-4-C	100 hrs/at least once a yr
PROP SHAFT	2-4-C	100hrs/120 days
SWIVEL PINS	2-4-C	100hrs/120 days
TILT LOCK MECHANISM/TILT TUBE	2-4-C	100 days
DRIVE SHAFT SPLINES (ENGINE COUPLERS)	EXTREME	100 hrs/at least once a yr

MAINTENANCE CHECK LIST	100 HRS	300 HRS
INSPECT ENGINE AND ACCESSORIES FOR VISIBLE DAMAGE	♦	♦
RUN ENGINE FOR CORRECT OPERATION, CHECK FOR ANY ACTIVE CODES	♦	♦
DRAIN GEAR HOUSING AND REFILL WITH GEAR LUBE	♦	♦
REPLACE GEAR LUBE	♦	♦
SERVICE WATER PUMP	♦
INSPECT THERMOSTATS, REPLACE IF NECESSARY	♦	♦
LUBRICATE DRIVE SHAFT SPLINES	♦	♦
INSPECT PROPELLER SHAFT NUT, TORQUE IF NECESSARY	♦	♦
INSPECT IGNITION COMPONENTS, REPLACE SPARK PLUGS IF NECESSARY	♦
INSPECT FUEL TANK, FUEL LINES AND CONNECTIONS	♦	♦
INSPECT FUEL FILTERS, REPLACE IF NECESSARY	♦	♦
CHANGE ENGINE OIL AND REPLACE OIL FILTER (FOURSTROKE ONLY)	♦	♦
INSPECT HIGH PRESSURE FILTER, REPLACE IF NECESSARY	♦	♦
CHECK AND INSPECT ANODE, REPLACE IF NECESSARY	♦	♦