Don't Let Yamaha Jet Boat Stuck Intake Plugs Stop The Fun

Riding a jet boat is a thrilling water sport experience

. These recreational vehicles are powered by water under high pressure ejected from the rear of the boat, unlike standard propeller-driven engines. When the water passes through a pump, it is expelled through a smaller rear jet nozzle, which gives the boat is characteristic name. Yamaha jet boat stuck intake plugs can cut down the fun, however.

Jet boats can be easily maneuvered at high speeds. Water is drawn from beneath the hull through a series of devices known as impellers and stators, which actually increase the flow of water, and are used in steering. Modern jet boats usually have a single stage, with the jet stream exiting through a small nozzle at high velocity. When the angle of this water is changed, so is the direction of the boat. Steering is impossible without the motor being on.

Jet boats were first introduced a little over fifty years ago in New Zealand, as one answer to successful navigation of some of their spectacular but shallow waterways. They were designed to use a turbine which rotated horizontally, and have been developed today into many water vehicle uses. These include patrol boats, high-speed non-hydrofoil ferries, supply and rescue boats, and especially recreational vehicles.

Superior performers in very shallow water situations, they can be slowed or stopped altogether by debris clogging the jet pumps. The Yamaha models were built with a debris clean-out device access plug located over the jet pump intake, which is an advantage for people who use their vehicles in waters where there is either a lot of sea grass, or the potential for other debris clogging up the intakes.

A related issue that has affected a number of boaters in the past is high-speed plug ejection. When the plug is blown out in this manner, it is often blasted through the access door at very high rates, and usually disappears into the water, never to be seen again. Not only is this annoying and somewhat costly, it can trigger an automatic engine shutoff, which then creates a large wave which soaks everyone on board.

Not only does everyone get wet, but the boat is limited to very slow operating speeds. One way to get around this lost plug problem in high speeds over rough water is to attach a float to the pump plug and the associated hardware devices. This is a decidedly non high-tech solution, but a simple nylon rope threaded through the parts allows them to be easily retrieved in the case of an ejection.

Clogged pumps are another common problem in areas with a lot of seaweed or sea grass. The impeller blades don't always cut through this vegetation, and Yamaha jet boat stuck intake plugs can become a problem when seaweed clogs the input. One solution is to install 'radiused leading edge' propellers as an aftermarket solution, which have enough strength to slice through the vegetation. Cutting off the engine then washes debris from the pump, allowing everyone to continue with an enjoyable day outdoors.

Yamaha Jet Boat stuck intake plugs

by: Trudy Edwards

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