Recent content by Brichards118

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    Yamaha, Is This a Pro-Tec Rec Head? O-Ring Problem

    Old post but this is not true! My head has the temp sensor on the same side as the exhaust mounts and it takes the larger -153 O-Rings.
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    Yamaha, Is This a Pro-Tec Rec Head? O-Ring Problem

    Beware, my Pro-Tec head with the temp sensor on the same side as the exhaust bolts takes the larger O-Ring, NOT the smaller o-ring which is not what’s stated above.
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