Yamaha VZ150Z Owner's Manual

Also see for VZ150B: Owner's manual

Contents

3-18EEMU01558Bow UpWhen the boat is on plane, a bow-up atti-tude results in less drag, greater stabilityand efficiency. This is generally when thekeel line of the boat is up about 3 to 5degrees. When trimmed out, the boatmay have more tendency to steer to oneside or the other. Compensate for this asyou steer. The trim tab can also be adjust-ed to help offset this effect.Too much trim-out puts the bow of theboat too high in the water. Performanceand economy are decreased because thehull of the boat is pushing the water andthere is more air drag.Excessive trim-up can cause the propellerto ventilate, which reduces performancefurther. When trimmed-out too much, aboat may “porpoise” (hop in the water),which could throw the operator and pas-sengers overboard.105011q105013w105015eEMU01559Bow DownWhen the bow of the boat is down, it iseasier to accelerate from a standing startonto plane.Too much trim-in causes the boat to“plow” through the water, decreasingfuel economy and making it hard toincrease speed.Operating with excessive trim-in at higherspeeds also makes the boat unstable.Resistance at the bow is greatlyincreased, heightening the danger of“bow steering” and making operation dif-ficult and dangerous.1 Bow up2 Bow down3 Optimum angle