What causes Airhead boxer engine oil leaks on the BMW R 12?

Rocker covers, pushrod tubes, and crankcase seals Estimated fix cost: $100-$400

What causes Carbureted models have jets clog easily on the BMW R 12?

Cold start behavior, idle quality, fuel flow Estimated fix cost: $80-$250

Grab forks, rock wheel hard for looseness Estimated fix cost: $150-$600

All lights, horn, and generator output voltage Estimated fix cost: $100-$500

Known issues to inspect before buying a used BMW R 12. What to check and how much repairs cost.

MODERATE

Rocker covers, pushrod tubes, and crankcase seals

Fix cost: $100-$400

MODERATE

Cold start behavior, idle quality, fuel flow

Fix cost: $80-$250

SERIOUS

Grab forks, rock wheel hard for looseness

Fix cost: $150-$600

MODERATE

All lights, horn, and generator output voltage

Fix cost: $100-$500

☐Check all gaskets for fresh oil seepage

☐Test ride cold start and idle quality

☐Inspect frame for cracks near sidecar mounts

☐Verify matching numbers on engine and frame

Robust but aged; budget for gaskets and carbs