1985 Yamaha Unknown 0.1L Petrol · B196 JJB

A motorcycle that has accumulated only two MOT records in its entire testing lifetime, the most recent being a pass on 19 April 2024, has revealed a mixed mechanical picture. The pass itself was accompanied by an advisory noting that the stop lamp was slightly affected by the operation of the indicators, a minor electrical interaction that should not pose an immediate safety concern. More tellingly, the same date carries a failure entry citing a headlamp aim that was too low and a front brake lever with insufficient reserve travel, both classed as dangerous defects that must be rectified before the machine can be legally ridden. The presence of a failure and a pass recorded on the very same inspection date suggests the rectification work was carried out during the same visit, but a prospective buyer should confirm that the headlamp adjustment and brake lever pivot or cable adjustment have been properly resolved rather than left in a marginal state. The recorded mileage of 5,007 miles against a 1985 registration equates to roughly 122 miles per year across 41 years, an exceptionally low rate of use that places this machine firmly in the low-mileage bracket. Such a figure typically indicates either extensive periods of storage or genuinely light recreational use, and it must be reconciled with the very sparse MOT history, motorcycles of this age having only become subject to testing from their fourth anniversary onward. Low annual mileage reduces wear on consumables such as brake pads, tyres, chain and sprockets, and engine internals, but extended standing periods introduce their own well-documented issues. Seals harden and perish, brake calipers and master cylinders can bind or seize through corrosion, fuel systems may develop varnish or moisture contamination, and electrical connections oxidise, all of which can manifest regardless of how few miles have been covered. Given the headlamp aim failure, the buyer should check the headlight adjustment mechanism for seized adjusters or stripped threads, and verify on a stationary test that the beam pattern sits at the correct height without flickering or dipping under engine vibration. The front brake lever reserve travel defect points towards either stretched cable, worn pivot hardware, or a binding caliper and master cylinder, all of which are particularly common on a machine that has stood for long periods. On a test ride, the brake lever should feel firm within the first third of its travel and continue to build pressure smoothly to the bar without sponginess or a wooden feel, and any judder or pulling under braking should be investigated as it may indicate corroded or warped components that the MOT brake test alone would not fully reveal. The stop lamp advisory linked to indicator operation suggests a shared earth or a wiring junction where the indicator circuit is back-feeding into the brake light, a relatively common fault on older motorcycles with ageing connectors. A careful inspection should trace the rear light wiring for green oxidisation, brittle insulation, or poor earth points, and the buyer should confirm that both lamps illuminate correctly and independently when activated. Beyond the flagged items, a low-mileage motorcycle of this vintage warrants close attention to fluid condition, particularly brake fluid and any fuel system preservation, tyre age and sidewall condition since old tyres may have perished regardless of tread depth, and the general state of rubber components such as fork seals, dust covers, and suspension bushes. Given the failure defects and the extreme low usage, an independent pre-purchase inspection by a marque specialist would be a prudent step before committing to the machine.