Air intake hose -APRILIA- Minarelli horizontal - Yamaha Aerox (YQ50/L, 2-stroke), MBK Nitro (YQ50/L, 2-stroke), Aprilia SR50 (used as manifold / bellow between carburettor and filter box)

The suction hose should be checked occasionally for its condition. If it is cracked or porous, the engine will draw in false air faster than you would like. This can cause the mixture to lean and can lead to serious engine damage.
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