NGK Standard Spark Plug
AB-6
$8.99
Sale price
$8.99
Regular price
$8.99
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NGK Standard Spark Plug for Yamaha RD400 Motorcycle - Street
NGK Standard Spark Plug for Yamaha RD400 Motorcycle - Street
$8.99
Sale price
$8.99
Regular price
$8.99
SKU:38-2245
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Description
Standard Spark Plug
The workhorse, at the heart of smooth-running engines around the world.
FEATURES
- OEM Quality
- Triple-Gasket Sealing Process
- Consistent Performance
- Plug of Choice in Millions of Vehicles
- Sold each
Technical Specifications
- MFG. Part Number AB-6
Vehicle Information
Yamaha RD400 Motorcycle - Street (1976-1979)
The Yamaha RD400, produced from 1976 to 1979, is a classic two-stroke motorcycle renowned for its spirited performance and agile handling. Powered by a 398cc air-cooled parallel-twin engine, it built upon the legacy of its predecessors, offering a thrilling ride experience. This model range saw consistent engine displacement but introduced key updates and annual trim designations. While the core 398cc engine remained, the 1976 RD400C was notable as the first major manufacturer motorcycle to feature cast aluminum wheels as standard. A significant update occurred in 1978 with the RD400E, which introduced a Capacitor Discharge Electronic Ignition (CDI) system, replacing the earlier points ignition on US models. This model also received thinner spoked cast wheels, a revised footpeg position, and minor engine modifications, including updated cylinder porting and carburetor specifications. Q: How do I find parts specific to my Yamaha RD400?
A: To ensure guaranteed fitment, please use the year and model selector at the top of the page.
Maintenance
| Component | Interval | Details |
| Oil Injection System (Autolube) | Before each ride | Check Autolube tank level and top off before prolonged use. The RD400 uses a two-stroke oil injection system, not a traditional four-stroke oil filter. |
| Drive Chain Lubrication | Every 250-350 km | Lubricate the drive chain. In severe riding conditions, shorten the interval to every 80-150 km. The RD400 uses a chain drive, not a belt. |
| Spark Plug | Inspection and cleaning recommended | While a specific replacement interval is not detailed, general advice suggests replacement every few years or if issues arise. Consult your owner's manual for inspection and cleaning procedures. |
| Air Filter Element | Monthly or every 400-800 km | Remove and clean the filter element with compressed air. Ensure it remains free of water and oil. |
| Coolant System | Not applicable | The Yamaha RD400 is an air-cooled engine and does not use a liquid coolant system. No coolant maintenance is required. |
The intervals provided are based on available service manual information. For comprehensive and precise maintenance details, always consult the official Yamaha RD400 service manual for your specific model year.