2004 Kawasaki ZX 636 B2H 0.6L Petrol · OU54 FHM

The most recent MOT, carried out on 26 February 2026, was passed but returned three advisories – a light mist of oil on the off‑side front shock absorber, a slight fluctuation in front‑brake effort and a minor fault with the rear position lamp. Over the last five years the vehicle has moved from a failed test in May 2022 (multiple major faults including throttle mis‑run, rear stop‑lamp and reflector failures) to a failed test in June 2023 (brake grabbing and indicator positioning) and now to a clean pass with only minor advisories. This pattern shows a clear improvement in overall compliance, although the recurrence of front‑brake and lighting system notes suggests those areas have not been fully resolved and may require further attention. With 27 322 miles recorded on a 2004 model, the average annual mileage works out at roughly 1 240 mi per year – significantly below the typical UK usage of 8‑10 000 mi per annum. Such low mileage often indicates periods of limited use or long storage intervals rather than heavy wear. The benefit is reduced mechanical fatigue on the engine, transmission and suspension, but prolonged inactivity can accelerate rubber ageing, corrosion of electrical contacts, battery sulphation and the perishing of seals and gaskets. There are no obvious mileage spikes that would point to a period of intensive use, so the wear profile is likely to be dominated by age rather than distance. Prospective buyers should focus on the items that have appeared repeatedly in the MOT records. Inspect the front brake assembly for uneven disc wear, glazed pads or a sticking caliper that could cause the reported effort fluctuation and occasional grabbing; a test‑drive should reveal any pulsation, pulling to one side or a soft pedal feel. Verify that all direction‑indicator units flash at the correct rate and that the rear position lamp operates independently – faulty bulbs, corroded sockets or wiring harness damage are common culprits and are inexpensive to rectify. The off‑side front shock absorber should be examined for oil seepage, worn seals or deteriorated bushings, as a mist of oil can be an early sign of loss of damping performance; listen for clunks or excessive bounce over bumps. Finally, confirm that the throttle response is smooth and that the engine does not surge unexpectedly, indicating that the previous throttle‑operating fault has been properly corrected. Given the vehicle’s age and low utilisation, a thorough visual and tactile inspection of age‑related components is essential. Check the tyre sidewalls for cracking, dry rot or flat‑spotting, especially if the bike has been stored for long periods; replace any tyres showing signs of perishing regardless of tread depth. Examine the battery for bulging cases, low voltage or excessive sulphation and consider a load test or replacement if it shows any weakness. Look for corrosion on the frame, exhaust brackets and electrical connectors, and verify that all fluid reservoirs – engine oil, coolant and brake fluid – have been changed in accordance with calendar intervals rather than mileage alone. A full service history, if available, will help confirm that routine maintenance such as valve clearance checks, chain tensioning and coolant flushes have been observed, providing greater confidence in the bike’s long‑term reliability.