Inspection
Inspect your power package often and at regular intervals to help maintain operating performance and to identify potential
problems before they occur. The entire power package should be checked carefully, including all accessible engine parts.
1. Check for loose, damaged, or missing parts, hoses, and clamps; tighten or replace as necessary.
2. Check electrical connections and leads for damage.
3. Remove and inspect the propeller. If it is badly nicked, bent, or cracked, contact your Mercury Diesel–authorized repair
facility.
4. Repair nicks and corrosion damage on power package exterior finish. Contact your Mercury Diesel–authorized repair
facility.
Maintenance Schedule (Sterndrive Models)
Routine Maintenance
Each Day Start
• Check the engine oil level.
• Check the engine coolant level.
• Check the power‑assisted steering fluid level.
• Check the sterndrive gear lubricant level in the gear lube monitor.
Each Day End
• If operating in saltwater, brackish water, or polluted water, flush the seawater section of the cooling system after each use.
• Drain any water from the fuel filter after each use if operating in freezing temperatures.
Weekly
• Drain any water from the fuel filter.
• Check the trim pump fluid level.
• Check the seawater inlets for debris or marine growth.
• Check and clean the seawater strainer.
• Inspect the anodes and replace if they are 50% eroded.
• Inspect the air filter.
Every Two Months
• Check the battery connections and fluid level.
• Lubricate the propeller shaft and torque the propeller nut (if operating in only freshwater, this maintenance may be
extended to every four months).
• Spray the engine surfaces with Corrosion Guard if operating in saltwater, brackish water, or polluted waters.
Tube Ref No.
Description Where Used Part No.
120
Corrosion Guard Engine surfaces 92-802878 55
• Inspect the air filter every two months or every 20 hours, whichever occurs first.
• Ensure that the gauges and the wiring connections are secure. Clean the gauges every two months or every 50 hours,
whichever occurs first. If operating in saltwater, the interval is reduced to every 25 hours or 30 days whichever occurs first.
Scheduled Maintenance
Annually
Touch up the power package with paint and spray with Corrosion Guard.
Tube Ref No.
Description Where Used Part No.
120
Corrosion Guard Engine surfaces 92-802878 55
Every 100 Hours or Annually (Whichever Occurs First)
• Change the sterndrive gear lube.
• Torque the gimbal ring U‑bolt locknuts.
• Check the steering system and the remote control for loose, missing, or damaged parts. Lubricate the cables and linkages.
Section 4 - Maintenance
Page 42 90-8M0145546 eng MAY 2018
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