General Specifications
HP / kW
8 HP / 6.0 kW
Displacement
165 cc (10.1 cu in.)
Cylinders
2 (Inline)
WOT RPM
4500 - 5500
Weight
27 kg / 60 lbs
Drive & Lower Unit
Gear Ratio
2.08
Shaft Length
15", 20"
Electrical System
Alternator Output 60 Watts
Starting System Manual
Technical Maintenance Toolkit
Verified service specifications for the Mariner 8hp International (Yamaha-built 6G1) (1990)
Lubrication
Engine Oil
TC-W3 2-Stroke
Gearcase Lube 200 ml
Ignition System
Spark Plug
NGK B7HS
Firing Order 1-2-3-4
Performance Specs
Idle RPM 700 ± 50
WOT Range 4500-5500
Alternator 60W
Standard Maintenance Intervals
20H Break-in Service
100H Annual Tune-up
300H Water Pump & Seals
Identification
The serial number for the Mariner 8hp International (Yamaha-built 6G1) is typically found on a plate located on the transom bracket.
Technical Toolkit
Maintenance Compatibility
These models share common service parts with the Mariner 8hp International (Yamaha-built 6G1):
Category Discovery
Reference Data
Information compiled from Mariner Marine factory service manuals and original sales literature published in 1990.