Yamaha Maxam 250 (CP250 SG17J / SG21J) — OEM Fluid, Tire Pressure & Maintenance Specs
249cc Liquid-Cooled Single DOHC 4-Valve FI (Low-Slung Cruiser Scooter) · Source: Yamaha Maxam 250 (CP250 SG17J / SG21J) (2005–2017) Official Owner’s Manual Maintenance Specifications
According to the Yamaha Maxam 250 (CP250 SG17J / SG21J) (2005–2017) Official Owner’s Manual Maintenance Specifications, the 2005–2017 Yamaha Maxam 250 (CP250 SG17J / SG21J) (chassis SG17J/SG21J/1B7) requires 1.2 L (1.27 US qt) of SAE 10W-40 (JASO MB, API SG or higher) engine oil for a drain-only change and 1.4 L (1.48 US qt) with filter service (5RU-13440-00 / HF132). Standard solo cold tire pressure is 175 kPa / 1.75 bar / 25 PSI front (120/70-13M/C 53P) and 225 kPa / 2.25 bar / 33 PSI rear (130/70-13M/C 63P), paired with 1× NGK CR8E spark plug(s) and a YT9B-BS battery.
Drain only: 1.2 L (1.27 US qt)
R 225 kPa (2.25 bar)
Est. Range: ~378 km (235 mi)
1. Engine Lubrication, Filter & Clutch Specifications
| Clutch Architecture | Dry Centrifugal CVT Belt Drive |
|---|---|
| Recommended Viscosity & Grade | SAE 10W-40 · JASO MB · API SG or higher |
| Oil Volume (Drain / With Filter / Overhaul) |
• Drain only: 1.2 L (1.27 US qt) • With filter/strainer: 1.4 L (1.48 US qt) • Complete dry overhaul: 1.6 L (1.69 US qt) |
| OEM Oil Filter Code & Type | 5RU-13440-00 / HF132 |
| Correct Oil Level Check Method | Hold upright on level ground; rest dipstick UNTHREADED on filler neck (do NOT screw in) |
| Oil Drain Bolt Torque | 20 N·m (14.8 lb-ft / 2.04 kgf·m) — Use fresh crush washer |
| Final Drive / Bevel Gear Oil | 200 ml (0.20 L) — SAE 10W-30 / 10W-40 (200 ml final gear oil) |
2. Cold Tire Pressures, Wheels, Ignition & Drivetrain
| Front / Rear OEM Tire Sizes | Front: 120/70-13M/C 53P · Rear: 130/70-13M/C 63P (Tubeless) |
|---|---|
| Cold Tire Pressure — Solo Riding |
Front: 175 kPa / 1.75 bar / 25 PSI Rear: 225 kPa / 2.25 bar / 33 PSI |
| Cold Tire Pressure — 2-Up / Loaded Touring |
Front: 175 kPa / 1.75 bar / 25 PSI Rear: 250 kPa / 2.50 bar / 36 PSI |
| OEM Spark Plug & Quantity | NGK CR8E × 1 (Gap: 0.8–0.9 mm) |
| OEM Battery Code & Rating | YT9B-BS (12V 8.0Ah MF AGM) |
| Final Drive Maintenance | Dry V-Belt CVT Drive — Inspect/replace V-belt and rollers every 20,000–24,000 km |
| Brake Fluid & Coolant | DOT 4 · Silicate-free ethylene-glycol OAT coolant for aluminum radiators (50:50 premix) |
3. Ergonomics, Range & Scheduled Service Intervals
| Displacement · Max Power · Peak Torque | 249 cc · 20 hp @ 7,500 rpm · 22 N·m (16.2 lb-ft) @ 5,500 rpm |
|---|---|
| Seat Height & Wet Curb Weight | 655 mm (25.8 in) · 201 kg (443 lbs) |
| Fuel Tank & Est. Real-World Range | 14 L (3.7 US gal) · ~27 km/L → ~378 km (235 mi) |
| OEM Scheduled Maintenance Intervals |
• First Break-In: 1,000 km • Engine Oil / Filter: 5,000 km / 10,000 km • Air Filter / Spark Plug: 15,000 km / 15,000 km • Valve Clearance Check: 20,000 km |
4. Generation Cutoffs & Real-World Wrenching Gotchas
Model-Year & Chassis Generation Notes
Sold in North America as the Morphous, the low-slung 655 mm-seat Maxam CP250 ran a 249cc DOHC 4-valve FI single across 2005 SG17J and 2007–2017 SG21J emissions updates.
Oil & Clutch Mechanical Engineering Note
Unlike the SOHC Majesty 250, the Maxam’s DOHC engine uses replaceable internal paper element HF132, requiring 1.4 L w/ filter (1.2 L drain) of SAE 10W-40 JASO MB oil.