Suzuki GN 250

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The Suzuki GN 250 is a motorcycle ( soft chopper ) that was built by the Japanese manufacturer Suzuki between 1982 and 1999 . Similar models were made as the 125 and 400 . The engine has four valves, two intake and two exhaust valves. It is equipped with a Mikuni carburetor. Disc brakes on the front wheel and drum brakes on the rear wheel. Spoked wheels can be found on most models, a few types are also equipped with cast wheels.

Technical specifications

Suzuki GN 250
General data
Number of cylinders 1
Displacement 249 cm 3
drilling 72 mm
Hub 61.2 mm
PS 17 to 22
kW 13 to 16.2
Valve clearance inlet cold 0.03 to 0.08 mm
Valve clearance outlet cold 0.08 to 0.13
Idle speed 1250 to 1350 min -1
Carburetor propeller 2 turns
Front tire pressure 1.75 bar
Rear tire pressure 2.0 bar
spark plug NGK DR8ES-L, D8EA, Champion RA4HC
Electrode gap 0.6 to 0.7 mm
Standpipe diameter 34 mm
Pinion / sprocket 15/41 teeth
Chain 100 links
Weight with a full tank 140 kg
Tightening torques
spark plug 12 Nm
Oil filter cover 10 Nm
Front brake caliper 27 Nm
Side stand 30 Nm
Filling quantities
fork 216 cm³ 10W per stile
Oil without a filter 1.3 l SAE 10W40
Oil with filter 1.4 l SAE 10W40
brake fluid DOT 4, older models DOT 3
Tank capacity / reserve 10/2 l normal
consumption 3.3-4.1 liters / 100 km

engine

The engine in the GN 250 comes from the off-road motorcycle Suzuki DR 250 and it was also available in the Suzuki GZ 250 (Marauder) and the Suzuki TU 250 X (Volty). However, ER has been changed in some points. The DR250 has a kick starter, older electrics and ignition. The later engines, starting with the GN 250, have (only) an electric starter, a modern three-phase 12V alternator and a more modern ignition system.

It is a single cylinder engine with an overhead camshaft and four valves. In the operating instructions engine oil of the classification API SE or SF with the viscosity SAE 10W40 is listed. The engine oil also lubricates the gearbox, so you should also pay attention to compliance with the "JASO MA" standard. In practice, mostly mineral or partially synthetic motor oil is used. There are no problems using better engine oil than API SF, this classification is "out of date". The oil change interval is given as 5000 kilometers or twelve months.

bikes

  • Version with spoked wheels:
    • Front rim labeled "TAKASAGO J 18x1.60 DOT 109 (JAPAN 489, date of manufacture)" with a tube and a 3.00-18 tire
    • Rear rim with the inscription "TAKASAGO J 16x2.15 DOT 102 (JAPAN 489, date of manufacture)" with a tube and a tire size 120 / 90-16
  • Version with cast wheels: tires of the same dimensions, without tubes

tank

The fuel tank holds 10.2 liters, of which 2 liters are in reserve. It drives around 230 kilometers to the reserve. To increase the range, you can try to fit a larger tank (from another motorcycle). The tank of the GN 125 fits on the GN 250, but is not larger. The tank of the TU 250 X fits on the GN 250, the tachometer shaft presses a little against the lower right part of the tank, as it has a different shape than the original tank. With a capacity of 12 liters, it holds 2 liters more. Tanks of the GZ 125 and GZ 250 fit, but the adjustment of the tank brackets (on the tank) and a shortening of the seat are necessary.

The tank lids of the Suzuki models GN 125, GZ 125, GZ 250, TU 125 and TU 250 also fit on the tank of the GN 250.

successor

The successor model was the Suzuki TU 250 X (Volty). The engine remained largely unchanged, there were modifications to other components. In terms of appearance and appearance, the TU 250 can be described as a "retro motorcycle". The TU 250 was not sold in large numbers in German-speaking countries. The TU 250 has been offered in a modified version in North America since 2009.

Individual evidence

  1. Suzuki GN 250 specs | Suzuki GN . In: Suzuki GN . May 7, 2016 ( suzukign.com [accessed March 30, 2017]).
  2. GZ tank on GN 250 ( Memento of the original from 23 August 2011 in the Internet Archive ) Info: The archive link was automatically inserted and not yet checked. Please check the original and archive link according to the instructions and then remove this notice. @1@ 2Template: Webachiv / IABot / www.ralfmeierwolfhagen.de
  3. TU250 at suzukicycles.com ( memento of the original from March 26, 2010 in the Internet Archive ) Info: The archive link was inserted automatically and has not yet been checked. Please check the original and archive link according to the instructions and then remove this notice. @1@ 2Template: Webachiv / IABot / suzukicycles.com

Web links

Commons : Suzuki GN 250  - Collection of pictures, videos and audio files