| Bike | 1989 Honda Hawk NT650 GT |
| Standard Maintenance Interval | 6,437.38km (4,000mi) |
| Break-in Interval | 965.61km (600mi) |
| Engine Oil Change Interval | 12,874.75km (8,000mi) |
| Initial Valve Check | 965.61km (600mi) |
| Periodic Valve Check | 12,874.75km (8,000mi) |
| Engine Oil Capacity With Filter Change | 2.3L (0.608gal.) |
| More on Engine Oil | Honda 4-stroke oil or equivalent API service classification: SE or SF VISCOSITY: SAE 10W-40 |
| Idle Speed RPM | 1,200 +/- 100 |
| Coolant Capacity | 2.2L (0.581gal.) or 1.6L (0.423gal.) at draining |
| Sparks | NGK ND Standard DPR8EA-9, X24EPR-U9, For cold climate (below 5°C/41°F), DPR7EA-9, X22EPR-U9, For extended high-speed riding DPR9EA-9, X27EPR-U9 |
| Spark Plug Gap | 0.8 – 0.9mm |
| Cylinder Compression | 192.03psi (13.24bar, 1,324kPa) +/- 28.43psi (1.96bar, 196kPa) |
| Final Drive | Type: Chain 525 RK525 SM3 or DID525 V7 Final Drive Ratio: 16 / 44 |
| Fork Oil | Level: 128mm (5.04″) Capacity: 502cc + |
| Front Wheel | 110/80R-17 57H Bridgetstone G547G or Dunlop K505G |
| Front Wheel Pressure (solo/dual riding) | 33psi (2.28bar, 227.53kPa) / 33psi (2.28bar, 227.53kPa) |
| Rear Wheel | 150/70R-17 69H Bridgetstone G548 or Dunlop K505 |
| Rear Wheel Pressure (solo/dual riding) | 33psi (2.28bar, 227.53kPa) / 36psi (2.48bar, 248.21kPa) |
| Headlight | Halogen 60W /55W |
| Taillight | 12V- 2/32W x2 Halogen 32W 2W |
| Throttle Grip Free Play | 2 (0.08) – 6mm (0.24″) |
| Clutch Lever Free Play | 10 (0.39) – 20mm (0.79″) |
| Drive Chain Slack | 20 (0.79) – 30mm (1.18″) |
| Engine Oil Drain Bolt Torque | 35N·m (25.81ft·lbf) |
| Engine Oil Filter Torque | 10N·m (7.38ft·lbf) |
| Front Axle Pinch Bolt Torque | 22N·m (16.23ft·lbf) |
| Front Axle Bolt Torque | 60N·m (44.25ft·lbf) |
| Front Brake Disc Bolt Torque | 40N·m (29.5ft·lbf) |
| Front Brake Caliper Mounting Bolt Torque | 27N·m (19.91ft·lbf) |
| Rear Axle Bolt Torque | 120N·m (88.51ft·lbf) |
| Rear Brake Disc Bolt Torque | 35N·m (25.81ft·lbf) |
| Driven Sprocket Bolt/Nut Torque | 43N·m (31.72ft·lbf) |