PreRide Checklist for a 1973 Yamaha RD350 Motorcycle
Shop parts for a 1973 Yamaha RD350 Motorcycle.
Introduction
A quick, focused pre-ride inspection keeps you safer and preserves the lively two-stroke character of a 1973 Yamaha RD350 Motorcycle. This classic parallel-twin demands attention to a few specific itemschain, expansion chambers, two-stroke oiling and ignition feelthat can affect performance and safety in short order. Below is a practical checklist written for riders who want to keep their RD350 ready for street use without wasting time.
Quick 60-Second Pre-Ride Checklist for the motorcycle listed in PreRide Checklist for a 1973 Yamaha RD350 Motorcycle
- Kick the sidestand — ensure it retracts and the bike sits solidly upright.
- Spin both wheels — free, no tight spots, no obvious damage to rims or spokes.
- Light check — headlight, taillight, brake light, and both turn signals illuminate and blink.
- Brake lever & pedal feel — firm engagement, no excessive travel.
- Chain quick-check — correct tension, no rusty stiff links, light lubrication at the rear sprocket.
- Throttle returns smoothly to idle when released; clutch engages cleanly.
- Oil & fuel level visible for two-stroke premix or oil injection, as applicable.
Tires and Wheels
The 1973 Yamaha RD350 Motorcycle typically runs street-focused tires on narrow rims compared with modern machines. Check tire pressure when cold to the pressure you prefer for urban or canyon riding – underinflation kills feedback and increases wear.
- Inspect sidewalls for cracks and the tread for uneven wear; older rubber can show hairline cracking even with good tread depth.
- Run a finger across the contact patch to feel for embedded objects or cuts.
- Spin each wheel to listen for wobbles or rim rubbing; a slight lateral play is a sign to inspect bearings or spokes.
Brakes
Brake performance on a classic RD350 is non-negotiable. Whether your bike uses drum or early disc components, strong, predictable stopping power is essential.
- Pull the front lever and press the rear pedal; both should feel positive with modest travel before engagement.
- Visually check pad or shoe lining thickness and look through the caliper or drum service ports for wear indicators.
- Confirm brake fluid level in the master cylinder reservoir and inspect for dark or contaminated fluid; replace service fluid routinely for reliable feel.
- Listen for squeal or grinding; unusual noises mean immediate attention before a spirited ride.
Chain / Drivetrain
The drivetrain on a 1973 Yamaha RD350 Motorcycle is chain-driven and central to both acceleration and reliability. A properly maintained chain is safer and prevents sudden failures.
- Measure chain slack at the midpoint of the lower run; the correct amount gives comfortable riding compliance without excessive sag.
- Check sprocket teeth for hooked or shortened profiles; replace chain and sprockets as a matched set when wear appears.
- Lubricate the chain lightly and evenly, focusing on the O-rings and link pins. Avoid over-spraying which attracts grit to the swingarm area.
- Look along the chain for stiff links or corrosion; free any stiff links gently and address rust promptly.
Fluids
Fluids keep the RD350 running crisp. Because this is a classic two-stroke machine, pay equal attention to oiling method and the usual hydraulic liquids.
- Two-stroke oil — confirm level in the oil tank or double-check premix ratio in your fuel if you use premixing. Running lean on oil quickly damages the engine.
- Engine oil — if your bike has a separate gearbox oil, top it to the correct sight level.
- Brake fluid — ensure reservoirs are filled to mark and free from leaks at lines and fittings.
- Fuel — verify there is enough fresh gasoline and note that old fuel causes hesitation on an RD350 with age-related carburetor sensitivity.
Controls and Lights
Responsive controls and functioning lights are indispensable, especially on an agile, quick-revving 1973 Yamaha RD350 Motorcycle.
- Twist the throttle to confirm smooth action and positive return to idle; sticky throttles are hazardous on a high-revving two-stroke.
- Operate the clutch lever to ensure a consistent bite point and cable free play; adjust cable slack as needed.
- Cycle all lights & signals: low/high beam, tail/brake light, left/right blinkers. Replace bulbs or bulbs sockets that flicker.
- Check horn and any handlebar-mounted switches for secure operation and no excessive play in levers.
Suspension and General Condition
Suspension on an RD350 is simple but should be inspected for leaks and travel condition before every ride.
- Press the forks to confirm smooth compression and rebound without clunking; look for oil weeping at the fork seals.
- Check rear shocks for sag, leaks, and mounting bolt torque; worn shocks reduce control under braking or cornering.
- Scan the frame, mounts, and exhaust headers for cracked welds, loose clamp bolts, or exhaust leaks near the expansion chambers.
- Ensure fasteners are snug at the handlebars, footpegs, and passenger mounts — vibration can work them loose on older machines.
Final Safety Check Before Riding
Do a last-minute sweep to catch anything missed in the quick run-through.
- Ensure the sidestand is up and secure before you release the bike from your support.
- Adjust mirrors to a clear rear view and wipe any dirt or rain from the lenses.
- Confirm you have the proper protective gear on and that helmet strap, gloves, and jacket fit correctly.
- Start the engine, listen for unusual noises, verify idle stability, and roll forward a few feet to confirm both brakes engage properly.
Conclusion
Riding a 1973 Yamaha RD350 Motorcycle is rewarding when the little details are kept in check. Make this pre-ride routine habitual – it only takes a minute but prevents many common failures and keeps the bike performing like the spirited two-stroke it was built to be.
Related Shopping Categories
Shop Tires for a 1973 Yamaha RD350 Motorcycle.
Shop Brakes for a 1973 Yamaha RD350 Motorcycle.
Shop Chain and Sprockets for a 1973 Yamaha RD350 Motorcycle.
Shop Oil and Fluids for a 1973 Yamaha RD350 Motorcycle.
Shop Suspension Parts for a 1973 Yamaha RD350 Motorcycle.
Disclaimer: This guide is provided for general informational purposes only and is not intended to replace your motorcycle's official owner's manual. Always refer to your manufacturer's documentation for model-specific instructions, torque specifications, safety procedures, and maintenance requirements. If you are unsure or inexperienced, consider seeking assistance from a qualified mechanic or technician.
