Outboard · 4 Stroke EFI · serial 2B095049 and up
SeaPro 90 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 8M0231611.
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
- 90 HP
- Engine oil
- 5.2 L
- Gearcase
- 800 ml / 810 ml / 790 ml
- Catalog
- 90-8M0087973
Maintenance schedule
4 procedures by engine hours and calendar
First service
3 steps · 4 parts · 1 h
2 videos
Steps and parts →100hours / yearAnnual service
15 steps (4 dealer) · 11 parts · 2.5 h
5 videos
Steps and parts →300hours / 3 yearsMajor service
7 steps (3 dealer) · 6 parts · 4 h
Steps and parts →SeasonendWinterization and storage
6 steps · 6 parts · 2.5 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
- Transom sıkılığı
- Yakıt sistemi kontrolü
- Direksiyon kontrolü
- Pervane hasar kontrolü
- Hidrolik direksiyon bağlantıları (varsa)
- Hidrolik direksiyon yağ seviyesi (varsa)
After-use care · 3 checks
After every trip; always after salt, dirty or muddy water.
- Soğutma sistemi flush (tuzlu/kirli su)
- Tuz temizliği
- Powerhead tuz kontrolü (tuzlu su)
Know your engine · parts catalog
Exploded drawings of the systems maintenance touches
Drawings from Mercury parts catalog 90-8M0087973; 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) | 5.2 L | SAE 25W-40 Syn Blend / 10W-30 FC-W | 92 8M0206956 (4 L)92 8M0206955 (1 L) |
| Gearcase (lower unit) oil · Standart 2.07:1 | 800 ml | Premium Gear Lube 80W90 | 92 858058QB1 (1 L) |
| Gearcase (lower unit) oil · Command Thrust sağ 2.38:1 | 810 ml | Premium Gear Lube 80W90 | 92 858058QB1 (1 L) |
| Gearcase (lower unit) oil · Command Thrust sol/ters | 790 ml | Premium Gear Lube 80W90 | 92 858058QB1 (1 L) |
Source: 8M0231611 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.