Villette Le Bonheur Gebrauchs- Und Wartungsanleitung Seite 17

Every 3 years or 6000 km:
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Check the wear levels (brake pads, gear system, tyres),
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Check the bearings (bottom bracket, wheels, steering, pedals),
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Check the cables (brakes, derailleur, suspension), or the hydraulic brake hose,
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Change the transmission (chain, free wheel, chain ring),
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Check the power-assistance system is working correctly,
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Change the tyres,
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Replace the wheels for wear (spokes, wheel rim),
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Tighten and/or straighten the wheels.
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Changing the brake pads,
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Check the power-assistance system is working correctly,
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Check electric functions.
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