Operation Instructions For The Rescue Boat - Outboard

Operation instructions for the rescue boat - outboard


The SOLAS Convention. LSA Rules and the People's Republic of China Sea Ship Lifesaving Equipment Code clearly require that the propulsion device of the rescue boat may be either an inboard or an outboard. The ship's rescue boat is equipped with a TOHATSU two-stroke, two-cylinder, 25-horsepower outboard.

This machine uses a mixture of gasoline and motor oil. The mixing ratio is gasoline during the machine running-in (10h): oil = 25:1

After the running-in period, 10 hours later, the mixing ratio is gasoline: oil = 50:1

The quality and ratio of gasoline and oil are very important. This machine requires the use of petrol with a lead-free octane number of at least 91. The oil is a specially designated two-stroke outboard motor oil. If the oil ratio is too small, it is easy to cause poor lubrication, so that the piston and the cylinder liner are accelerated to wear, and even the piston overheats and expands, causing the cylinder to be pulled. In severe cases, the piston and the cylinder sleeve are stuck, and the machine cannot operate normally. If the ratio is too high, the inexhaustible oil will condense into carbon and adhere to the top of the piston and cylinder liner. Long-term work will cause carbon deposits and stick to the piston ring, causing the piston ring to have poor sealing performance, poor combustion, and a vicious circle. , so that the engine noise is increased and the power is reduced.

1 Preparation before starting

Note: If it is a daily start-up inspection of the boat on board, instead of placing the boat on the surface. Before starting, the boat propeller should be immersed in a bucket containing fresh water, and the water level should at least flood the water inlet of the boat. It is forbidden to start the machine without cooling water.

A. Connect the fuel hose to the fuel tank and check the fuel quantity in the fuel tank through the fuel gauge.

Note: The amount of oil in the fuel tank should at least meet the requirements of the Convention. When the boat is fully loaded with occupants and attachments, sail at a speed of 6Kn for at least 4 hours. Filling up the fuel will ensure that the tank has 10% space, giving the fuel room to expand.

B. Connect the other end of the fuel hose to the outboard oil supply system

C. Unscrew the bleed screw on the fuel tank cap counterclockwise 2-3 times to ventilate the fuel tank

D. Use the soft airbag in the fuel hose to pump the fuel into the carburetor until you feel the inside of the soft airbag is full of fuel.

E. The starting gear position is in the neutral position, the neutral throttle lever is opened, and the locking switch of the emergency brake switch is firmly connected with the brake switch.

2 electric start

A. Disconnect the battery charging circuit, otherwise it will cause damage to the battery.

B. Insert the battery selector switch key and select the battery required to start the machine. Generally, only one battery is required to start (equipped with two sets of batteries), and the position indicated by the key handle is the state of the battery.

C. Insert the engine key and attach the emergency brake switch cable to the operator's wrist, or to a firm garment or other part of the operator.


1. If the drawstring is not connected to the emergency stop switch, the engine will not start.

2. The function of this cable is that if the operator falls into the water or leaves the rudder position, the cable will pull out the locking plate and stop the engine ignition to prevent the ship from continuing to operate under unattended operation.

3. Do not tie the drawstring to clothing that may fall off. Do not let the cable pass through a place where it may be entangled to prevent it from functioning.

4. The length of the cable is generally 122-152CM, which ensures that the operator has enough space to reduce the possibility of accidentally pulling off the cable.

During normal operation, avoid pulling the cable occasionally, the boat will lose power quickly, and the boat will slow down quickly, causing people or items on the boat to be thrown forward.

D. Turn the start key switch clockwise from the “ON” position to the “START” position for up to five seconds. Pressing the key while turning will trigger the remote control choke valve control system to close the choke valve.


1. When the machine is cold-started, closing the choke valve will reduce the engine air supply and provide a very high concentration of oil and gas mixture to the engine, making the engine easy to start.

2. If the machine is hot, there is no need to close the choke damper.

E. After the engine is started, release the main switch key to automatically rotate it to the “ON” position. Do not remove the key, and then pull the center throttle lever to the original closed position.

Note: 1. If the engine does not start the machine within 5 seconds, the main switch should be released, turn it back to the "ON" position, wait for 10 seconds and then start the operation again. It is not possible to start the operation for a long time. Long-term startup will cause the battery to run out and it is not possible to start the engine.

3 manual start

Preparations before manual start-up are consistent with preparations before electric start.

A. Pull out the choke button

B. Quickly pull the starter rope to start the machine. If it cannot be started, repeat it several times.

C. Push the choke button after the machine starts running.

4 check items after startup

A. Immediately after starting, check whether the cooling water continues to flow out from the cooling water outlet. If there is no water flowing out of the outlet hole when the engine is running, stop the engine immediately, check if the inlet and outlet holes are blocked, and start again.

B. Before starting the navigation operation, the engine should be warmed up for 3 minutes in a slow state.

C. Check the engine system, whether the parts of the control unit are normal

D. When the relevant personnel board the boat, pay attention to observe the boat, whether the trim and heel is normal, and should basically maintain normal floating state.

E. During the normal operation of the engine, the key cannot be turned or pulled out. Otherwise, the starter motor and the flywheel will be damaged (the key will be turned to the START position during operation) or the emergency stop will be turned (the key will be turned OFF during operation). Or pull out)

5 speed change operation

A. When shifting the gear position, hold the remote control lever and pull up the neutral lock trigger to pull the control lever easily and stably from neutral to forward or reverse.

B. When adjusting the throttle increase speed in non-emergency situations, the throttle should be slowly increased. It is not allowed to push the throttle to the maximum throttle to ensure the safety of the engine.

C. When entering the vehicle by entering the vehicle, or reversing into the vehicle, the lever must be placed in the neutral position to pause and then switch, so that the engine speed is gradually slowed down and then enter another gear. Rotate.

Note: The joystick of this unit, the front and rear 32 degrees are all shifting free strokes, and enter the throttle adjustment stage after 32 degrees.

6 shutdown operation

A. Before stopping, slowly reduce the throttle to the minimum speed and run for 2-3 minutes to reduce the machine temperature.

B. Put the lever to neutral

C. Turn the main switch key to the "OFF" position and the engine stops working.

D. After the engine stops working, tighten the vent screw on the fuel tank cap.