THE BIT TO REMEMBER
Identify first, inspect second, power last.
Look for an identity
Record the manufacturer, product number, scale, running number and any labels on the box or underside. Search the manufacturer’s support pages for the correct service sheet.
Inspect without dismantling
Look for loose wires, missing parts, foreign objects and obvious damage. Do not force wheels or valve gear. If a mechanism appears locked, stop.
Do not assume DC or DCC
A previous owner may have fitted or removed a decoder. Old digital systems are not automatically compatible with modern DCC. If the control type is uncertain, a workshop inspection is safer than trial and error.
Use a simple protected test
Only after identification and inspection, follow the maker’s instructions on suitable equipment. Start at zero on a separate test track and increase gently. Stop at the first sign of heat, smell, smoke or abnormal noise.
A REAL-WORLD EXAMPLE
A second-hand locomotive has no box and stiff wheels. Rather than applying more power, record its markings and arrange an inspection because forcing it could damage the motor or mechanism.
Your next step
- Photograph markings and identify the exact model.
- Find its manufacturer service or maintenance sheet.
- Inspect for visible damage without forcing the mechanism.
- Ask a repairer to test it if its control type or condition is uncertain.
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Still not running properly?
Choose the appropriate gauge on the workshop website to book an inspection.
Book a serviceRead the original instructions
Reviewed 7 October 2026. These beginner notes do not replace the instructions for your exact model.
Hornby · Product support and service sheets ↗Hornby · Locomotive maintenance sheets ↗