In order to independently assemble the outboard motor, it is necessary to understand its structure. In addition, it should be borne in mind that a tiller is required to control the model. In this case, it is more advisable to use parts from the old boat engine. Pallets for the engine are selected separately. Special attention should also be paid to the fuel system. Some experts are able to fold the outboard motor from a chainsaw or trimmer.
Simple motor device
At the top of any outboard motor is the engine itself. Through the fuel pump it connects to the piston system. In addition, it should be noted that in the outboard motor there is a special beam. It is necessary in order to ensure the operation of the valves. In this case, a lot depends on the cubic capacity of the engine. On the pallet in the outboard motor is a clamp. With its help, it is possible to fix the model on board.
Latches above the pallet are not always used. In some cases, gearboxes are also installed. Deadwood today are the most diverse. Beneath them is a crankshaft that connects to the central stem. Thus, the torque is transmitted to the lower gear. Through a special head, the screws are rotated.
Chainsaw Model
A boat motor from a chainsaw can be made, but parts from an outdated model are needed. First of all, the engine of the device is removed. It is installed immediately on the pallet. At the same time, the fuel system for him can be selected the most ordinary. In this case, the limit frequency parameter will not exceed 1300 rpm. Rocker arms for these boat engines (home-made) will fit with three valves. However, special attention must be paid to the type of convector.
With this part, you can control the tiller. After fixing the top plate, it is possible to switch to sternwood. The crankshaft in this case is better to choose durable. In this case, the central stock must be borrowed from the old outboard motor. At the end of the work, you only need to install the lower gear with screws. To pump out water, an additional pump is required.
Trimmer motor
Homemade outboard trimmer motors are pretty easy to assemble. First of all, experts advise removing the pen. It must be replaced with a stem. Next, it is important to make a pan for the engine. In this case, you can even use a cast-iron stove. The engine must be mounted on it very carefully. The fuel pump for the system can be used conventional. However, it is more advisable to choose a solid camshaft, otherwise it will not withstand heavy loads. Deadwood in this case is attached only after fixing the upper gear.
If desired, a thermostat can be installed on boat motors (home-made). The clamp is mounted after fixing the deadwood. To prevent the engine gear from hanging out, many experts advise using a special rubber gasket. The screws on the model must be mounted on a vertical shaft.
Motoblock model
To assemble home-made boat motors from a walk-behind tractor is quite difficult, but possible. If we consider electrical modifications, then first of all the starter is removed from the device. Additionally, the engine must be disconnected. If a four-stroke modification is used, then the fuel system will fit the most ordinary. In this case, it is important to select a water pump of high quality. In turn, deadwood can be taken from an outdated boat engine. To fix the fuel pump, many use various clamps. The easiest way is considered to be setting it over a carburetor. At the same time, he should not be in contact with the beam.
The crankshaft for boat engines (homemade) should be mounted above the top gear. At this stage, you need to check the strength of the clamp. The pallet, in turn, should not overlap it. The water pump in this case is installed under the deadwood. In order not to interfere with the operation of the lower stem, many experts advise using special springs. After fixing them, it remains only to fix the screws and tiller.
Double Handwheel Devices
To make a boat motor with your own hands with a two-way flywheel is not an easy task. The engine in this case is more appropriate to choose a push-pull type. In this case, the rocker under it should be designed for three valves. Also, before installation, it is necessary to check the strength of the pushers. They must withstand a maximum pressure of at least 3 bar. In this case, we can hope for stable engine operation. In this case, the pallet must be mounted under the clamp. For convenience, it can be fastened with screws and then use a sealant. After fixing the tiller, deadwood is connected. The outboard motor screw protection is the last to be installed.
Two-stroke models
You can make a boat engine with a two-stroke engine yourself only if you use a crankshaft with a diameter of at least 60 mm. Otherwise, it will not withstand the load. In this case, the flywheel can be selected ordinary. In this case, the fuel pump must withstand the pressure of at least 3 bar. Rockers experts recommend installing only three valves. The thermostat is mounted on boat motors (home-made) if desired.
Exhaust valves in the system are most often installed aluminum. Cooling devices are diverse today. The simplest option is considered to be a water modification. To do this, intakes should be foreseen in the pallet. Pushers over the engine must be installed last. Deadwood for push-pull modification fits with a 120 mm stem.
Four-stroke engines
You can assemble a homemade outboard motor with a four-stroke engine, but you will have to use parts from another model. In particular, it is necessary to separately select a clamp for the device. You should also pay attention to the fact that the rocker is required in this case for four valves. In this case, the tank is installed under the fuel system near the pallet.
Deadwoods for the engine are selected, as a rule, on two rods. In this case, the crankshaft must be selected separately. Connectors in such devices are installed quite often. The tiller must be attached directly to the flywheel. Clamps for this are best used steel. In this case, it is rather difficult to do without welding.
Modifications on a manual starter
Home-made boat motors (swamps) with manual starters are quite common. These components are installed near the camshaft. In order to fix them, it is necessary to use a rubber gasket. In this case, there must be at least four screws. If we consider four-stroke engines, then starters are usually installed electronic type. However, for push-pull modifications, handheld devices are ideal.
Protected Gearbox Model
Today, outboard motors with a protected gearbox are quite popular. In order to assemble them yourself, you need to choose an engine with a power of at least 3 kW. The starter in this case is suitable for manual type. First of all, a clamp is cut for the engine. Only then can the installation of the fuel system be started. The thermostat, if desired, is mounted on the beam.
The next step is the gearbox. So that the rocker does not twitch during operation, a gasket can be placed under it. Pushers are installed on the pallet, and for this you will need to use a welding machine. The upper stem in this case, it is important to mount under the clamp. So that the pressure does not deform the pan, many experts advise installing additional supports.
Devices with anti-cavitation cooker
Outboard motors with the help of anti-cavitation plates are controlled quite comfortably. In this case, it is necessary to begin work on collecting the device with fixing the engine. Only after that the clamps are welded. You can use screws to secure the fuel pump. In this case, it is not necessary to install the gasket. Special attention should be paid to the fuel system. It should be mounted next to the water piston. The anti-cavitation plate is fixed near the connector. However, it should not be in contact with the pallet. In the end, it remains only to install deadwood.
Gearbox motor
Outboard motors with gearboxes are quite difficult to assemble. In this case, the connector must be selected high-quality. In turn, the engine can be used four-stroke. Pushers for the system are installed quite wide. The gearbox should be attached at the upper flange. In order to avoid short circuits, all wiring must be carefully hidden. Additionally, you should take care of a good water pump. To close the upper rod from the carburetor, you can use a sealant.
Model with reverse lock
In order to assemble a motor with a reverse lock, first of all, it is necessary to fix the engine as a standard. After that, the tiller is connected to the plate. The fuel system can only be installed after the rocker arm. In order not to pinch the carburetor, many are advised to use gaskets.
The reverse lock must be attached directly under the clamp. For this purpose it is necessary to use a welding machine. After that, it remains only to fix the deadwood. If the outboard motor is installed with a gearbox, then the latch can be located directly in it. However, it is quite difficult to do this due to the fact that you have to saw the block body.