| Specification | Value |
|---|---|
| Production Years | 1987–1990 |
| Engine Type | Liquid-cooled, Parallel Twin, DOHC |
| Oil Requirement | 1.7 L (SAE 10W-40; API SE/SF/SG) |
| Spark Plug | NGK CR9E |
| Battery | YB9L-A2 |
| Front Tire | 100/90-17 55S |
| Rear Tire | 140/90-15 70S |
A unique engineering highlight of the Kawasaki EL 250 (EL250B), often overlooked by casual riders, is its high-performance DNA. Unlike traditional cruisers of the late 80s that prioritized low-end torque, the Eliminator 250 utilized a retuned version of the liquid-cooled parallel-twin engine found in the GPZ250R (Ninja 250R). This gave the EL 250 a screaming 14,000 RPM redline, making it one of the few ‘sport-cruisers’ of its era that rewarded aggressive high-RPM riding.
Technical Engineering & Performance
The EL250B variant represents the quintessential lightweight cruiser. By marrying a low-slung chassis with a high-revving, 8-valve DOHC engine, Kawasaki created a machine that was approachable for beginners but technically interesting for enthusiasts. The liquid-cooling system was advanced for a 250cc cruiser in 1987, ensuring thermal stability during prolonged high-rev operation.
Maintenance Guide
Engine Lubrication
For the EL250B, engine longevity is tied directly to oil quality. The system requires 1.7 Liters of SAE 10W-40. While the original manual specifies API SE, SF, or SG, modern riders should look for JASO MA or MA2 certifications to ensure the integrated wet clutch does not slip under the engine’s high-RPM power delivery.
Ignition and Electrical
The high-compression nature of the parallel twin demands a precise spark. The NGK CR9E is the standard plug for this model. Owners should check the gap regularly, especially if the bike is used for short urban commutes. The electrical system is supported by a YB9L-A2 battery; given the age of these machines, ensuring clean ground connections is vital to prevent charging issues.
Tires and Handling
The EL 250 features a staggered wheel setup that contributes to its ‘dragster’ aesthetic.
- Front: 100/90-17 55S (Pressure: 2.0 bar / 28 psi)
- Rear: 140/90-15 70S (Pressure: 2.25 bar / 32 psi normal; 2.5 bar / 36 psi max load)
Maintaining these pressures is critical for cornering stability, as the 15-inch rear tire can feel ‘squishy’ if under-inflated.
MotoSpecsLab Editorial Verdict
The Kawasaki EL 250 (EL250B) remains a fascinating study in 1980s Japanese engineering. It successfully defied the ‘slow cruiser’ stereotype by installing a sportbike heart into a relaxed frame. While parts sourcing for the EL250B specific trim can occasionally be challenging, its mechanical reliability—inherited from the Ninja lineage—makes it a robust choice for collectors and vintage enthusiasts alike.
Frequently Asked Questions (FAQ)
Q: Can I use synthetic oil in my EL 250?
A: Yes, provided it is a motorcycle-specific synthetic (JASO MA) to protect the wet clutch. Avoid ‘Energy Conserving’ automotive oils.
Q: What is the spark plug gap for the NGK CR9E?
A: The recommended gap is typically 0.7–0.8 mm. Always verify with a feeler gauge before installation.
Q: Why does my EL 250 struggle to start after winter?
A: The small carburetors on the EL 250 are prone to gumming. Ensure you drain the float bowls or use fuel stabilizer during storage.