1976 Yamaha RD400 0.4L Petrol · EHJ 790P

The Yamaha RD400 presents a stable roadworthiness profile, evidenced by three consecutive clean MOT passes between July 2023 and July 2025. The most recent inspection on July 4, 2025, confirms the machine remains free of recorded defects, indicating a consistent standard of maintenance and mechanical health over the last three years. Given the current date of August 2026, the vehicle holds a valid certificate with approximately eleven months of compliance remaining, suggesting the owner has proactively managed the annual testing cycle. The recorded mileage of 34,545 miles over a fifty-year lifespan averages to roughly 691 miles per annum, which is exceptionally low for a motorcycle of this vintage. While these figures suggest the machine has seen light usage, they also imply significant periods of inactivity. Such extended storage can often lead to issues not captured by a standard MOT, specifically regarding fuel system degradation, internal engine corrosion, and the hardening of rubber seals or gaskets. The lack of advisory items in the recent history is encouraging, but it does not account for the condition of internal components that fall outside the scope of a basic roadworthiness check. Prospective buyers should focus their physical inspection on areas prone to age-related deterioration that an MOT tester might overlook. Prioritize a thorough check of the fuel tank for internal corrosion and ensure the carburettors are clean, as stale fuel often causes running issues in low-mileage two-strokes. Inspect the condition of the oil pump lines and all rubber hoses, as these are critical components that perish over time regardless of how few miles the bike has covered. Verify the integrity of the wheel bearings and the condition of the brake lines, as these systems frequently suffer from neglect during long-term storage. While the MOT record confirms the machine passes basic safety standards, the low mileage necessitates a comprehensive assessment of the engine internals and fuel delivery system to ensure reliable operation.