| 摘要 |
A marine engine is provided with an drive unit which incorporates a water impeller to supply water to the marine engine in order to maintain proper engine cooling. Devices are currently available that allow the watercraft's engine to be started when the craft is not in actual service. These devices attach to the craft's drive unit and they provide for water, from a household faucet, to be supplied to the water impeller. An impeller tester of the present invention is connected to such devices to measure the pressure of the input and output of the impeller. This allows an operator to determine if the impeller will produce sufficient pressure for cooling the engine.
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