Rear wheel type: Spoked wheel ( rear wheel bearings )įront Suspension: 32mm Telescopic forks ( fork seals ) Rear brake shoe: EBC Y506 / Vesrah VB-223įront wheel type: Spoked wheel ( front wheel bearings ) Rear tyre pressure (if your carrying a pillion): 2.3 bar / 33 psiįront brake: Drum (expanding) brake ( front brake lever )įront brake shoe: EBC Y511 / Vesrah VB-220 Rear tyre pressure (if your on your own): 2.0 bar / 29 psi The few we’ve had in all had 18 inch front wheels, but most tyre reference books say they have 19 inch front wheels (so best to check your old tyre before buying a replacement!)įront tyre pressure (if your on your own): 1.8 bar / 26 psiįront tyre pressure (if your carrying a pillion): 2.0 bar / 29 psi Note: There seems to be a bit of confusion over if the SR250 had a 19 inch or 18 inch front wheel. Gasket: 45mm (outside diameter) x 38mm (inside diameter) x 5mm (depth) exhaust gasket Spark plug gap: NGK 0.7mm to 0.8mm – Champion 0.8mmġ981 Yamaha SR250 SE speedometer and warning lights Max alternator output: 8 amps at 4000 rpm Plug coil secondary resistance: 6320 to 9480 ohms Plug coil primary resistance: 2.48 to 3.00 ohms Ignition switch: Center mounted handlebar key operated ignition Switch Regulated voltage: 14.8 volts ( regulator/rectifier ) Side view of a (very scruffy!) 1981 SR250 SEĬarb type: 34mm Mikuni carburetor ( carb parts )įuel tap: On the left side of the tank, behind the engine – Petrol tap repair kitsġ981 Yamaha SR250 SE carburetor and engine As with most marketing stuff, this should be taken with a pinch of salt (most manufacturers inflate the top speed figure in their marketing leaflets as it helps increase sales!).
Please note – The 89mph top speed was Yamaha’s estimated top speed (used on their marketing bumph!) back in the 1980’s. Note: Some models had a slightly smaller, 15 tooth front sprocket instead of the standard 16 tooth front sprocket (if your replacing your old sprocket, count the teeth to see which one you have!) Note: You’ll need a clutch holding tool for removing it, a clutch lever if you’ve dropped it and possibly a clutch cable if it’s suddenly stopped working!įinal drive: Chain ( chain and sprocket kits ) Oil filter: Filtrex OIF018 / Hiflo HF145 / K&N KN-145įiring order: If your looking for the firing order you might want to read this book (hint, it’s a SINGLE CYLINDER engine)! 🙂Ĭlutch: wet (oil immersed), multi plate clutch Recommended engine oil (4T): 10w40 Semi Synthetic motorcycle oilĮngine oil capacity: 1.3 litres (1.6 litres if the oil filter is changed as well) Inlet valve clearance (when cold): 0.05mm to 0.10mmĮxhaust valve clearance (when cold): 0.12mm to 0.17mm Group 4 (of 17) – SR250 insurance up for renewal? Save money at Įngine type: Air cooled, four stroke, single cylinder, SOHC (single overhead cam) Need parts for your SR250? Find SR250 spares… A little bit about the Yamaha SR 250 SE…. The SR250SE proved to be (and still is) a popular and reliable commuter bike. The SR250 was available in other countries and was called the SR250 Exciter in the USA.
YAMAHA SR250 1995 MANUAL LICENSE
With styling taken from the Yam SR500 and SR400, the SR 250 was aimed at the popular quarter litre motorbike market (in the UK we used to be able to ride a motorcycle up to 250cc on a car license without the need to take any further motorbike tests). The Yamaha SR250 SE was a commuter style 4 stroke motorcycle manufactured between 19 (ish!).
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