| 摘要 |
A tilt and trim unit for a marine drive eases manual trim or tilt up of the drive, while presenting a compact construction. The unit includes a cylinder having upper and lower fluid chambers. A bypass arrangement selectively bypasses a shock absorbing mechanism of the tilt and trim unit. The bypass arrangement is formed by a sub-chamber and a valve positioned in series on one side of the fluid chambers. This arrangement produces a compact construction. The valve also desirably establishes three operating states for the tilt and trim unit. In one state, the valve is open and the tilt and trim unit is easily moved. In another state, the valve is closed to prevent movement of the tilt and trim unit. In a third state, the valve operates as a one-way valve permitting extension of the tilt and trim unit to raise the marine drive, but inhibiting retraction of the tilt and trim unit. This latter operating state allows a person to raise the outboard motor and then close the valve without having to continuously hold the outboard motor when closing the valve.
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