Outboard · 4 Stroke EFI · serial 0P153500 – 0P400999
FourStroke 40 HP service and maintenance
The Mercury maintenance schedule, the steps and parts of every procedure, exploded catalog drawings, official Mercury videos and the owner's manual. Source: Mercury operation and maintenance manual 8M0231124.
Showroom page: price, specifications, documents →
Step narratives, plan names and glossary definitions come from the Merkür Deniz workshop records and are in Turkish for now; intervals, step counts, parts lists, prices and capacities read the same in any language.
- Power
- 40 HP
- Engine oil
- 3 L
- Gearcase
- 340 ml / 710 ml
- Catalog
- 90-88387502
Maintenance schedule
5 procedures by engine hours and calendar
First service
3 steps · 4 parts · 1 h
2 videos
Steps and parts →100hours / yearAnnual service
13 steps (6 dealer) · 8 parts · 2.5 h
5 videos
Steps and parts →300hours / 3 yearsMajor service
9 steps (7 dealer) · 20 parts · 4 h
1 video
Steps and parts →300hours / 3 yearsMajor service
9 steps (7 dealer) · 15 parts · 4 h
1 video
Steps and parts →SeasonendWinterization and storage
6 steps · 7 parts · 2 h
2 videos
Steps and parts →Interval rule: hours or calendar, whichever comes first. In salt water, anodes, spark plugs and lubrication points are checked more often.
Every trip
Checks the boat owner does
Pre-use check · 8 checks
Before every trip, a few minutes. Done with the engine off.
- Motor yağı seviyesi
- Lanyard stop kontrolü
- Yakıt sistemi kaçak kontrolü
- Transom sıkılığı
- Direksiyon kontrolü
- Pervane hasar kontrolü
- Hidrolik direksiyon bağlantıları (varsa)
- Hidrolik direksiyon yağ seviyesi (varsa)
After-use care · 2 checks
After every trip; always after salt, dirty or muddy water.
- Dış yıkama
- Soğutma sistemi flush (tuzlu/acı su)
Know your engine · parts catalog
Exploded drawings of the systems maintenance touches
Drawings from Mercury parts catalog 90-88387502; live price and stock on every part.
Videos
Mercury's official walkthroughs for this engine
Capacities and oils
Values specific to this model
| System | Capacity | Oil / spec | Mercury product |
|---|---|---|---|
| Engine oil (with filter) | 3 L | SAE 25W-40 Syn Blend / 10W-30 FC-W | 92 8M0206956 (4 L)92 8M0206955 (1 L) |
| Gearcase (lower unit) oil · 83 mm Standart şanzıman | 340 ml | Premium Gear Lube 80W90 | 92 858058QB1 (1 L) |
| Gearcase (lower unit) oil · 108 mm BigFoot/Command Thrust | 710 ml | Premium Gear Lube 80W90 | 92 858058QB1 (1 L) |
Source: 8M0231124 s.16/83, 8M0231124 s.87, 8M0231124 s.89 and the accessory catalog quick-reference table; confirmed by the Merkür Deniz service team.
This page is information compiled from the Mercury manual; steps marked as dealer work require Mercury dealer training and tools. During the warranty period, maintenance must be recorded at an authorized dealer.