Manual ((exclusive)) — Honda Gb250 Service

The GB250 features a high-revving, air-cooled 249cc DOHC single-cylinder engine using the Radial Four Valve Combustion (RFVC) Engine Type : 4-stroke, Air-cooled, DOHC 4-valve Single Cylinder. Max Output : 30 ps (22 kW) @ 9,000–9,500 rpm. Max Torque : 2.5 kg·m (24.5 N·m) @ 7,500 rpm. Transmission : 6-speed constant mesh. : ~130 kg (Dry) / ~145 kg (Curb). Fuel Capacity : 15 Liters. Essential Maintenance Data Engine Oil Total Capacity: 1.8L. Refill Amount: 1.5L. With Filter Change: 1.55L. Spark Plug NGK DPR8EA-9 with a single plug configuration. Tire Pressure/Sizes Front: 90/90-18 51S. Rear: 110/90-18 61S. : 520 size; Sprockets: 14T (Front) / 38T (Rear). : YTX9-BS. Service Manual Components

The Honda GB250 (1983–1987) is a cult classic: a single-cylinder, four-valve, RFVC (Radial Four-Valve Combustion) cafe racer often called the "Baby CB1100R." Owning one today requires dedication, as parts are rare and dealership support is non-existent. The is therefore not a luxury—it is a survival tool. This review covers the official Honda publication (p/n 61MG100) versus generic alternatives. Honda Gb250 Service Manual

Let’s open the manual (virtually) and see what you get. A genuine manual runs about 250–300 pages. Here are the critical sections: The GB250 features a high-revving, air-cooled 249cc DOHC

: Unlike many small commuters of that era, it features a full 6-speed gearbox . Transmission : 6-speed constant mesh