Harley-Davidson Street Rod 750 (XG750A High-Output) — OEM Fluid, Tire Pressure & Maintenance Specs
749cc Liquid-Cooled 60° V-Twin SOHC 8-Valve High-Output Revolution X · Source: Harley-Davidson Street Rod 750 (XG750A High-Output) (2017–2020) Official Owner’s Manual Maintenance Specifications
According to the Harley-Davidson Street Rod 750 (XG750A High-Output) (2017–2020) Official Owner’s Manual Maintenance Specifications, the 2017–2020 Harley-Davidson Street Rod 750 (XG750A High-Output) (chassis XG750A) requires 2.8 L (2.96 US qt) of SAE 20W-50 (JASO MA2, Screamin’ Eagle SYN3 15W-50 Full Synthetic) engine oil for a drain-only change and 3.1 L (3.28 US qt) with filter service (HD 62700045 / HF171B). Standard solo cold tire pressure is 248 kPa / 2.48 bar / 36 PSI front (120/70R17 58V) and 290 kPa / 2.90 bar / 42 PSI rear (160/60R17 69V), paired with 2× HD 6R10 / NGK CR8E spark plug(s) and a YTX14L-BS / HD 65958-04B battery.
Drain only: 2.8 L (2.96 US qt)
R 290 kPa (2.90 bar)
Est. Range: ~267 km (166 mi)
1. Engine Lubrication, Filter & Clutch Specifications
| Clutch Architecture | Wet Multi-Plate Manual Clutch NEVER use JASO MB |
|---|---|
| Recommended Viscosity & Grade | SAE 20W-50 · JASO MA2 · Screamin’ Eagle SYN3 15W-50 Full Synthetic |
| Oil Volume (Drain / With Filter / Overhaul) |
• Drain only: 2.8 L (2.96 US qt) • With filter/strainer: 3.1 L (3.28 US qt) • Complete dry overhaul: 3.4 L (3.59 US qt) |
| OEM Oil Filter Code & Type | HD 62700045 / HF171B |
| Correct Oil Level Check Method | At full operating temperature resting ON THE SIDESTAND (Jiffy Stand); thread dipstick in to read |
| 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: 120/70R17 58V · Rear: 160/60R17 69V (Tubeless) |
|---|---|
| Cold Tire Pressure — Solo Riding |
Front: 248 kPa / 2.48 bar / 36 PSI Rear: 290 kPa / 2.90 bar / 42 PSI |
| Cold Tire Pressure — 2-Up / Loaded Touring |
Front: 248 kPa / 2.48 bar / 36 PSI Rear: 290 kPa / 2.90 bar / 42 PSI |
| OEM Spark Plug & Quantity | HD 6R10 / NGK CR8E × 2 (Gap: 0.8–0.9 mm) |
| OEM Battery Code & Rating | YTX14L-BS / HD 65958-04B (12V 12.0Ah MF AGM) |
| Final Drive Maintenance | Carbon/Aramid Reinforced Secondary Belt — Inspect belt deflection and pulley debris |
| Brake Fluid & Coolant | DOT 4 · OAT ethylene-glycol coolant for aluminum radiators (50:50 premix) |
3. Ergonomics, Range & Scheduled Service Intervals
| Displacement · Max Power · Peak Torque | 749 cc · 68 hp @ 8,750 rpm · 65 N·m (47.9 lb-ft) @ 4,000 rpm |
|---|---|
| Seat Height & Wet Curb Weight | 765 mm (30.1 in) · 238 kg (525 lbs) |
| Fuel Tank & Est. Real-World Range | 13.1 L (3.5 US gal) · ~20.4 km/L → ~267 km (166 mi) |
| OEM Scheduled Maintenance Intervals |
• First Break-In: 1,600 km • Engine Oil / Filter: 8,000 km / 8,000 km • Air Filter / Spark Plug: 24,000 km / 32,000 km • Valve Clearance Check: 24,000 km |
4. Generation Cutoffs & Real-World Wrenching Gotchas
Model-Year & Chassis Generation Notes
Heavily reworked over the XG750, the XG750A adds dual-throat throttle bodies and high-lift cams for 68 hp alongside 43 mm inverted forks, piggyback shocks, dual front discs, and 17-inch radials.
Oil & Clutch Mechanical Engineering Note
Spinning to a 9,000 rpm redline in a single unitized sump, the High Output 750 demands full-synthetic SAE 20W-50 JASO MA2 (3.1 L with filter 62700045).