Yamaha - Oil tank - 6J8-21707-01-00Yamaha Oil Tank Lubrication System Component 6J8 21707 01 00 Overview The oil tank is one of those parts you rely on every time you turn the key, even if you dont think about it. If it starts leaking, cracking, or feeding inconsistently, youre risking the whole motor. Ive seen simple tank issues lead to bigger problems just because oil delivery wasnt steady. Keeping a solid tank in place gives you peace of mind that the engine is getting what it