Yamaha 25BMH 30HMH Factory Service Manual, Page 151Get this manual
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GENERALITES ALLEGEMEINES GENERAL
3 VrifierType de bougie Incorrect RemplacerBougie standard 25BNGK BR7HS-10 30HNGK BR8HS-10 4 MesurerEcartement des bougies Hors spcifications RemplacerEcartement