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 LT2M Dirt Bike
NGK Standard Spark Plug for Yamaha LT2M Dirt Bike
$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 LT2M Dirt Bike (1972)
The 1972 Yamaha LT2M is a classic 100cc motocross motorcycle, powered by a single-cylinder, two-stroke engine with a displacement of 97cc. This robust engine delivered 16 brake horsepower (BHP) at 10,500 RPM, making it a competitive machine for its era. The primary trim for this model year was known as the "LT2M Base" or "LT2M 100 Motocross". For the 1972-73 models, including the LT2M, Yamaha introduced significant engine enhancements. These included a newly designed 7-port cylinder and an innovative reed valve intake system. This reed valve induction greatly improved scavenging efficiency across all speeds, ensuring smoother and more consistent engine performance by allowing earlier intake and preventing fuel charge loss. The engine maintained its conventional 52 x 45.6 mm two-stroke single configuration. Q: How can I confirm if a part fits my 1972 Yamaha LT2M?
A: Please use the year and edition selector at the top of the page to ensure precise compatibility for your specific model. Q: Were there different versions of the 1972 Yamaha LT2M?
A: While the primary trim was the "LT2M Base" or "LT2M 100 Motocross", specific regional or production variations might exist. Always refer to the year and edition selector for accurate fitment.
Maintenance
| Component | Interval | Details |
| Transmission Oil | Every 1 600 to 3 200 km or annually | The 1972 LT2M, being a two-stroke, does not have a traditional engine oil filter. Its Yamaha Autolube system injects oil directly into the fuel. However, the transmission gearbox oil requires periodic changing. |
| Drive Belt | Not applicable | The 1972 Yamaha LT2M uses a chain for its secondary reduction system, not a belt. The drive chain requires regular cleaning, lubrication, and adjustment. |
| Spark Plug | Inspect every 50 to 100 hours of operation or regularly; replace as needed | Recommended NGK B-8HN with a 0.5 mm gap. Two-stroke motocross engines require more frequent inspection and replacement than modern four-strokes due to wear or fouling. |
| Air Filter | Inspect and clean very frequently, potentially after every dusty ride or every 10 to 15 hours of operation | "Wet, Foam Rubber" type, designed to be cleaned and re-oiled. Essential for off-road riding. |
| Coolant | Not applicable | The 1972 Yamaha LT2M is an air-cooled engine and does not use liquid coolant. |
These intervals are general guidelines for vintage two-stroke motorcycles. For the most accurate schedule, consult the official 1972 Yamaha LT2M owner's manual.