Service the original systems properly: carburettors, ignition, valve clearances, brakes, suspension and rubber parts. Keep the original components, document changes, and choose safety upgrades that can be reversed.
What this job covers
Service the original systems properly: carburettors, ignition, valve clearances, brakes, suspension and rubber parts. Keep the original components, document changes, and choose safety upgrades that can be reversed.
Signs you need it
The bike is hard to start or runs unevenly. It has been stored for a long time. Brakes, suspension or tires feel old or unpredictable. Fuel lines, seals or rubber parts are cracked. You want to ride a classic regularly, not just show it.
The process
Assessment: The machine, its history and its originality are assessed before work begins.
Fuel and ignition: Tank, lines, carburettors, ignition and timing are checked as a system.
Mechanical checks: Valve clearances, compression, oil condition and noises are assessed.
Chassis and brakes: Brakes, bearings, suspension and tires are checked for safety and originality.
Sympathetic repair: Worn parts are replaced with correct or reversible alternatives. Original parts are kept.
Road test and plan: The bike is ridden, adjustments are made, and a maintenance plan is agreed.
What is included
A condition and originality report Carburettor and ignition service Valve clearance and compression checks Brake and suspension safety inspection Correct or reversible parts choices A practical maintenance plan
What affects the scope
Originality and completeness Parts availability Condition of the fuel, ignition and charging systems Whether the bike will be ridden regularly or stored
How to prepare
Do not dismantle or clean the bike before assessment. Bring the history, manuals and any original parts. Decide whether originality or everyday reliability is the priority.
Checklist
- Carburettor cleaning, balancing and tuning
- Points, electronic ignition and timing
- Valve clearance and top-end checks
- Drum and early disc brake service
- Suspension, steering and wheel bearings
- Rubber parts, fuel lines and electrical connectors
Questions
Should I convert to electronic ignition?
Only if the original system is unreliable or parts are unavailable. A well-sorted points system is reliable and keeps the bike original. Keep the original parts if you convert.
Can I use modern oil?
Use an oil that matches the engine's requirements and the way it is used. Classic engines with wet clutches or flat tappets may need a specific formulation. Ask before changing.
How often should a classic be run?
Regular use is better than long storage. Warm it fully, ride it, and check fluids and tires. If it must be stored, prepare it properly.
