2003 Yamaha XT600 0.6L Petrol · WK03 ATZ

The defining story of this 2003 Yamaha XT600 is a pattern of recurring drivetrain, wheel bearing, and electrical defects that required repeated rectification, though the trajectory has improved markedly in the last two years. The most recent test on 17 January 2026 passed with no defects recorded, following a clean pass in February 2025, but the November 2024 test was a failure for a worn drive chain, a dipswitch that did not operate immediately on either main or dipped beam, and an advisory for a noisy exhaust. Earlier history shows a dangerous failure in August 2022 for a front wheel bearing so worn it was likely to break up, a July 2023 failure covering a steering head bearing with excessive play, a missing rear reflector, an incorrect-colour indicator, and a non-functioning front position lamp, and a 2021 test listing a worn chain and both sprockets. The overall trend is one of faults being addressed and the record stabilising, but the volume of past defects means the recent clean passes should be read as a snapshot rather than proof of underlying condition. Recorded mileage stands at 29,960 miles over roughly 23 years, an average of about 1,300 miles per year, which is low for a machine of this type. Tests have been annual and consistent since 2021 with no significant gaps, so the low total reflects genuinely light use rather than long untested lay-ups, though periods of standing between short trips remain plausible at this accumulation rate. Mechanically, low mileage on a dual-purpose single of this age means less wear on engine internals and gearbox components than the odometer of a commuter machine would suggest, but it does not protect against the age-related deterioration of rubber suspension bushes, wheel bearing grease, and electrical connections, all of which feature in this machine's history. A prospective buyer should focus first on the running gear that has repeatedly appeared in the record. The drive chain and both sprockets were flagged as worn in 2021 and the chain failed the 2024 test outright, so inspect the current chain for tight spots, hooked sprocket teeth, and correct adjustment, and budget for a full chain and sprocket set if there is any doubt. Wheel bearings are a confirmed weakness: the front bearing was condemned as dangerous in 2022 and the rear showed slight play the same year, so with the machine on its stand check both wheels for any rocking or roughness when spun, and listen for rumbling or grinding on a test ride. The steering head bearing failure in 2023 warrants a check for notchiness or free play by holding the front brake and rocking the machine fore and aft, and any vague or wandering feel at low speed should be treated with suspicion. The suspension also deserves attention, with advisories for a worn lower rear shock bush in 2022 and a worn lower rear suspension pin, bush, or joint in 2023; on a test ride, listen for clonks over bumps and feel for any wallowing or imprecision from the rear end under acceleration and braking. The electrical side has produced multiple failures across indicators, position lamp, reflector, and the dipswitch, so verify every lamp and switch operates cleanly and immediately, as intermittent switchgear faults on an older machine can be tedious to trace. Finally, the noisy exhaust advisory appearing in both 2021 and 2024 suggests a blowing joint or deteriorating silencer; check for gas leaks at the header joints and listen for harshness under load. If the current chain, bearings, and bushes prove sound and the electrics behave, the two most recent clean passes indicate the machine is presently in test-worthy order, but the history justifies a thorough hands-on inspection before purchase.