Mercury/Mariner 4 HP, 5 HP & 6 HP Outboard Service Manual (2000 Model Year) • P/N 90-857138R1, dated May 2000
Mercury Models Covered & Key Technical Specifications
Models: Mercury/Mariner 4 HP, Mercury/Mariner 5 HP, Mercury/Mariner 6 HP
Sub-models / Variants: 4-Stroke, Short Shaft, Long Shaft
Model Years: 2000–2001
Serial Numbers: 0R000001 and Above
Technical Data:
- Engine type: 4-Stroke, single cylinder, Over Head Valve
- Engine displacement: 7.5 cu. in. (123 cc)
- Fuel type: Automotive Unleaded (minimum 87 octane)
- Ignition type: Capacitor Discharge Ignition (CDI)
- Engine oil capacity: 15 fl oz. (450 ml)
- Spark plug: NGK DCPR6E (gap 0.035 in / 0.9 mm)
- Gear ratio: 2.15:1
- Idle speed (Out of Gear): 1300 ± 50 RPM
- WOT RPM range: 4500–5500 (1999–2000 models), 5000–6000 (2001 & newer models)
Mercury Manual Features & Content Preview
Mercury/Mariner 4–6 HP 4-Stroke Service Manual: 2000–2001 Models
- Official 260-page Mercury Marine publication (P/N 90-857138R1, dated May 2000)
- Covers 2000–2001 Mercury/Mariner 4 HP, 5 HP, and 6 HP 4-stroke outboards (short and long shaft)
- Authoritative reference for the 0R000001-series build
- Instant download directly to your device
- Fully searchable OCR text layer. Find precise torque values in seconds.
- Print individual sections. Take them straight to the shop floor without ruining a physical book.
- Permanent account access guarantees you never have to buy it twice.
- Features 47 detailed exploded-view assembly diagrams and 3 full electrical wiring schematics.
Technical Content Breakdown
This manual delivers the professional-level data required to service major mechanical and electrical subsystems. It details diagnostics for the ignition system, covering the flywheel, capacitor charging coil, trigger coil, and CDI unit. You will find comprehensive guidance for the charging system, including lighting coil and rectifier installations. The documentation also covers the fuel system thoroughly. It focuses on integral tank management, carburetor setup, and fuel pump repair. Specific chapters define exact specifications for valve timing, crankshaft runout, and connecting rod clearances. This ensures highly accurate assembly based strictly on original equipment data.
Factory Specifications
Having accurate factory-specified clearances on hand eliminates guesswork at the workbench. The primary ignition coil resistance (secondary) is specified at 3000–4400 ohms. The gearcase lubricant capacity requires exactly 6.5 fl oz (195 ml). Intake valve clearance is locked in at 0.002–0.005 in (0.06–0.14 mm). Always prioritize workshop safety when undertaking any maintenance or repair task. Follow the exact procedures outlined in this documentation. Adhering strictly to these factory tolerances is vital for reliable motor operation and user safety.
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