2001 Yamaha FZS600 0.6L Petrol · Y602 AJH

The most recent DVSA examination dated 1 November 2025 recorded a PASS for the Yamaha FZS600, although a single advisory was issued regarding slight fluctuation of brake effort at the rear brake. Looking at the four-test sequence presented, the maintenance trend appears largely stable rather than deteriorating; the only outright failure occurred in July 2023 due to a nearside front shock absorber exhibiting a serious fluid leak, which was rectified to enable a pass just eleven days later. Subsequent tests have returned clean passes, with the recurring rear brake advisory appearing in both November 2021 and November 2025, suggesting either a persistent minor imbalance in the rear braking system or simply a borderline hydraulic or mechanical condition that the examiner has flagged twice across five years. There is no escalation in advisory severity and no accumulating list of structural or corrosion concerns, which is a reassuring indicator of overall mechanical upkeep on this quarter-century old machine. With a recorded odometer reading of 48,715 miles spread across approximately twenty-five years, the annual usage averages around 1,949 miles per year, which is very low for a motorcycle and consistent with either a fair-weather leisure machine, a long-term ownership situation with extended periods of standing, or both. There are noticeable gaps between MOT tests, such as the eighteen-month interval between November 2021 and July 2023, and the thirteen-month interval before the November 2025 test, which suggests the bike has likely been SORNed or used only seasonally for at least portions of its life. Low annual mileage such as this typically reduces wear on high-mileage components like the engine internals, transmission, chain and sprockets, and brake friction material, but it simultaneously introduces age-related deterioration concerns including corrosion of ferrous components, perishing of rubber and elastomer parts, and degradation of lubricants and fluids purely through calendar ageing rather than active service. Given the recurring rear brake advisory noted in both 2021 and 2025, a prospective buyer should pay particular attention to the condition and operation of the rear braking system during inspection and test ride. Slight fluctuation of brake effort can be symptomatic of a partially seized or binding rear caliper slide mechanism, a slightly warped rear brake disc, uneven brake pad wear or glazing, or air or moisture ingress within the hydraulic system. On a test ride, listen for any scraping, grinding, or squealing from the rear caliper area, and feel for pulsation through the brake pedal or a tendency for the rear wheel to drag or pull to one side under gentle application. Inspect the rear brake disc for a uniform shiny surface without excessive lip, any blueing from heat, or pitting corrosion around the edges, and check that the caliper pistons retract cleanly and that the sliding pins move freely without corrosion. Given the advisory has now appeared twice, it would be prudent to budget for a rear brake overhaul including pads, disc if necessary, caliper clean and rebuild, and fresh brake fluid, as the system may be approaching the point where a further advisory escalates into a failure at the next test. Beyond the documented brake concern, the July 2023 shock absorber failure warrants a close look at the front suspension more broadly, even though it was replaced at the time. Hydraulic shock absorbers can degrade internally through seal hardening and oil breakdown, and a replacement unit fitted two years ago should still be in good condition, but the buyer should still check for any seepage of oil around the stanchion seal area and verify that the fork action is smooth and consistent without any clonks, topes, or harshness over uneven surfaces. Considering the low mileage and age profile, a thorough physical inspection should also include verification of tyre condition, paying particular attention to sidewall cracking or perishing from age rather than simply tread depth, as tyres over five years old can deteriorate regardless of remaining tread. The 12-volt battery should be load tested, as motorcycle batteries rarely last beyond four to five years and a flat or weak battery on a low-use machine is extremely common. All fluid services should be confirmed as up to date, including engine oil and filter, brake fluid (which is hygroscopic and should be renewed every two years regardless of mileage), coolant if applicable, and final drive oil if the chaincase is separate. Finally, examine the chain and sprockets for surface corrosion and check for stiff links from standing, inspect both exhaust cans for internal corrosion or blown silencer packing which causes aural deterioration, and verify that all cabling, connectors, and switchgear remain free from verdigris and oxidation. Service history stamps or invoices supporting recent recommissioning work would substantially strengthen buyer confidence on a motorcycle of this vintage and usage pattern.