Valve Specifications (Valves with Springs)
| Component | Specification | Notes |
|---|---|---|
| Valve Spring Length (Relaxed) | 46.21 +0.5-0.5 mm | Free length tolerance |
| Exhaust Valve Clearance | 0.34 … 0.41 mm | Engine cold max 35 °C |
| Inlet Valve Clearance | 0.10 … 0.17 mm | Engine cold max 35 °C |
Check valve clearance (inlet and exhaust) when engine cold (max 35 °C). Measure valve spring relaxed length.
2012-2018 BMW R 1200 GS Adventure K51 Repair manual Download