Triumph Bonneville 790 (Hinckley Gen 1) — OEM Fluid, Tire Pressure & Maintenance Specs
790cc Air/Oil-Cooled 360° Parallel-Twin DOHC Twin-Carb (Original Hinckley Revival) · Source: Triumph Bonneville 790 (Hinckley Gen 1) (2001–2006) Official Owner’s Manual Maintenance Specifications
According to the Triumph Bonneville 790 (Hinckley Gen 1) (2001–2006) Official Owner’s Manual Maintenance Specifications, the 2001–2006 Triumph Bonneville 790 (Hinckley Gen 1) (chassis 908MD) requires 3.5 L (3.70 US qt) of SAE 10W-40 (JASO MA2, API SH or higher (Castrol Power 1)) engine oil for a drain-only change and 3.8 L (4.02 US qt) with filter service (T1218001 / HF204). Standard solo cold tire pressure is 228 kPa / 2.28 bar / 33 PSI front (100/90 - 19 57H) and 262 kPa / 2.62 bar / 38 PSI rear (130/80 R17 65H), paired with 2× NGK DPR8EA-9 spark plug(s) and a YTX12-BS battery.
Drain only: 3.5 L (3.70 US qt)
R 262 kPa (2.62 bar)
Est. Range: ~312 km (194 mi)
1. Engine Lubrication, Filter & Clutch Specifications
| Clutch Architecture | Wet Multi-Plate Manual Clutch NEVER use JASO MB |
|---|---|
| Recommended Viscosity & Grade | SAE 10W-40 (Alt: SAE 10W-50) · JASO MA2 · API SH or higher (Castrol Power 1) |
| Oil Volume (Drain / With Filter / Overhaul) |
• Drain only: 3.5 L (3.70 US qt) • With filter/strainer: 3.8 L (4.02 US qt) • Complete dry overhaul: 4.5 L (4.76 US qt) |
| OEM Oil Filter Code & Type | T1218001 / HF204 |
| Correct Oil Level Check Method | Hold bike upright on level ground 3–5 min after warm shutdown; read crankcase sight glass |
| Oil Drain Bolt Torque | 25 N·m (18.4 lb-ft / 2.55 kgf·m) — Use fresh crush washer |
2. Cold Tire Pressures, Wheels, Ignition & Drivetrain
| Front / Rear OEM Tire Sizes | Front: 100/90 - 19 57H · Rear: 130/80 R17 65H (Tube-Type Spoke Rim) |
|---|---|
| Cold Tire Pressure — Solo Riding |
Front: 228 kPa / 2.28 bar / 33 PSI Rear: 262 kPa / 2.62 bar / 38 PSI |
| Cold Tire Pressure — 2-Up / Loaded Touring |
Front: 228 kPa / 2.28 bar / 33 PSI Rear: 283 kPa / 2.83 bar / 41 PSI |
| OEM Spark Plug & Quantity | NGK DPR8EA-9 × 2 (Gap: 0.8–0.9 mm) |
| OEM Battery Code & Rating | YTX12-BS (12V 10.0Ah MF AGM) |
| Final Drive Maintenance | 525 Heavy-Duty X-Ring Chain — Maintain 25–35 mm slack and lubricate regularly |
| Brake Fluid & Coolant | DOT 4 · Air/Oil-Cooled Engine (No liquid coolant — external oil cooler) |
3. Ergonomics, Range & Scheduled Service Intervals
| Displacement · Max Power · Peak Torque | 790 cc · 62 hp @ 7,400 rpm · 60 N·m (44.3 lb-ft) @ 3,500 rpm |
|---|---|
| Seat Height & Wet Curb Weight | 775 mm (30.5 in) · 225 kg (496 lbs) |
| Fuel Tank & Est. Real-World Range | 16 L (4.2 US gal) · ~19.5 km/L → ~312 km (194 mi) |
| OEM Scheduled Maintenance Intervals |
• First Break-In: 1,000 km • Engine Oil / Filter: 10,000 km / 10,000 km • Air Filter / Spark Plug: 20,000 km / 20,000 km • Valve Clearance Check: 20,000 km |
4. Generation Cutoffs & Real-World Wrenching Gotchas
Model-Year & Chassis Generation Notes
Reborn in 2001 with a twin-carbureted 790cc DOHC 360° engine and gear-driven twin balancers before the lineup standardized on 865cc in 2007.
Oil & Clutch Mechanical Engineering Note
Avoid excessive cold-choke idling on the twin Keihin CVK36 carbs to prevent fuel dilution in the 3.8 L SAE 10W-40/15W-50 JASO MA2 oil sump.