Electric motors on PVC boats and boats have long ceased to be just a quiet alternative to gasoline units, modern models have impressive traction and complex electronics that require careful attention. Regular maintenance This is the only way to avoid sudden water stops and expensive repairs in the future.
Many owners mistakenly believe that the electric motor needs little to no care. Indeed, the lack of oil in the crankcase and exhaust gases makes life easier for the angler, but does not relieve him of responsibility. Water, salt, sand and mechanical loads do their job, gradually destroying the knots if you ignore basic procedures.
In this article, we will discuss not just general phrases, but specific actions that must be performed after each fishing trip and at the end of the season. The right care The battery, the lower unit and the electric part will allow your motor to last for decades, retaining its power.
Initial inspection and cleaning of lower unit
Any maintenance starts with a visual inspection, and once the motor is removed from the water, you have to check the condition of the lower unit. deep-strippeddents or corrosion, especially if you've been fishing in salt water, even microscopic damage to the paintwork will eventually lead to the destruction of the metal.
Pay special attention to the place where the rod enters the body. This is where hair, fish scales and algae most often accumulate. If left unexcavated, they can wind themselves onto the glands, breaking their tightness. The water inside the electric motor housing is a disaster that leads to oxidation of the contacts and failure of the windings.
Use fresh water and a soft sponge to clean. Aggressive chemicals can damage plastic and rubber seals. After washing, wipe the surface with dry rags.
⚠️ Warning: Never wash an electric motor with a high-pressure jet (Karcher and analogues). The powerful pressure of water can push the oels and drive moisture inside the electrical part, even if the motor is considered waterproof.
It is important to check the status of the anodic protection if it is provided by the design of your model. Anodes (usually zinc or magnesium) take over the electrochemical corrosion, protecting the main metal parts. If the anode is broken more than half, it must be replaced.
Care for propeller and shaft
The propeller is a component that comes in direct contact with the bottom, the snags and the rocks. Regular inspection of the propeller is a must. Remove it and inspect the blades for chips and cracks. Balancing the broken propeller leads to vibrations that destroy the bearings of the shaft and gearbox.
The shaft on which the screw is placed also requires attention, it should not be coiled with fishing line or grass, the leaf that falls under the oment acts like an abrasive, quickly rubbing the seal, the result is the flow of water into the gearbox.
Use a special protective cap or piece of dense fabric to wrap the screw when transporting the boat, this will save the blades from hitting hard objects and save sharpening of the edges.
When assembling the unit, be sure to lubricate the shaft with a special shaft solid-greaseThis will prevent the screw from sticking to the shaft and make it easy to dismantle next time. Do not use solidol or litol, as they can be aggressive to rubber seals.
- 🔍 Examine the blades for chips and deformities.
- 🧹 Clean the shaft from the coiled fishing line and algae.
- 🛢️ Lubricate the shaft before installing the screw.
- 🔧 Check the reliability of the lock nut and splint.
The locking nut should be tightened with the recommended force. If the nut has a self-locking nut, make sure it has not lost its properties, otherwise the screw may simply fly off while driving.
Diagnosis and lubrication of the reducer
An electric motor gearbox is a sealed assembly that has gears inside it, and although many modern motors have a lifetime lubricant, experienced boaters recommend that the oil be checked annually, especially if the motor has been used in harsh conditions.
The leakproofness test is done visually, and if you notice an emulsion (coffee milk oil) on the probe or under the corks, it means that the water has entered the water, it signals an immediate replacement of the coils and a revision of the gears.
| Parameter | Norma. | An alarm signal. |
|---|---|---|
| The butter | Transparent, amber | Muddy, "coffee with milk" |
| Consistency | homogeneous | Presence of metal shavings |
| Level. | Up to the top plug hole | The oil does not leak when opened. |
| Smell. | Specific oily | Smell of smoke or acid |
To change the oil, you need to unscrew the lower and upper plugs of the gearbox. The old oil is drained, the knot is washed with a special flushing oil or a new oil, then filled with fresh lubricant. You always need to fill the gearbox from the bottom up to avoid the formation of air traffic jams.
What oil should I use for the gearbox?
Electric motor gearboxes typically use special transmission oils for outboard motors (e.g. Mercury Premium Gear Oil or equivalents). It is important that the oil has an appropriate viscosity class (usually SAE 90) and additives that prevent foaming and corrosion of non-ferrous metals.
Remember to check the condition of the gears through the viewing hole, if the design allows, the presence of large metal shavings indicates the destruction of the teeth of the gears or bearings, in which case professional repair is required.
Maintenance of electrical part and contacts
Electricity is the heart of your motor. Contact oxidation is the main cause of power loss and unstable operation. Once a season, it is recommended to disassemble the casing (as long as it does not violate warranty seals) and visually inspect the control board and wires.
The battery and terminal contacts on the motor must be perfectly clean and fit tightly together, and any sparkling causes the terminals to heat and burn, which increases resistance and reduces efficiency.
- ⚡ Check the integrity of the insulation of the wires for rubbing.
- 🔌 Treat the contacts with a spray for cleaning electricians (Contact Cleaner).
- 🛡️ Lubricate the battery terminals with dielectric lubrication to protect against oxidation.
- 🔋 Make sure the wires are secure inside the casing.
Use it. Contact Cleaner This is a tool that evaporates quickly and leaves no conductive traces, and after cleaning, let the board dry before assembly.
⚠️ Warning: Before any work with the electrical part, be sure to disconnect the battery. Accidental circuiting can lead to a short circuit, fire or damage to the speed controller.
Examine the rotor and stator (if available) and should be free of overheating (varnish darkening) or mechanical damage, and the smell of burning is a sure sign of winding problems.
Seasonal storage and conservation
Proper preservation for winter is key to a successful spring launch, you can't just put a wet engine in the garage, and the water left in the knots will freeze and expand, tearing metal parts and plastic.
Before long storage, the motor must be completely dry. Remove the screw, wipe all available surfaces, allow the motor to lie in a warm room for several days. Metal parts that are not coated with paint are recommended to be treated with a protective spray (for example, WD-40 Specialist Corrosion Inhibitor).
☑️ Checklist for winter preparations
The battery also requires preparation, and it needs to be fully charged and stored at room temperature, recharged periodically (once a month), and a deep discharge in winter can completely kill the battery.
Keep the motor upright to prevent the rod from deforming and dust from entering open holes. Cover it with breathable material to avoid condensation, but do not use airtight plastic bags.
Typical malfunctions and methods of their elimination
Even with perfect care, problems can arise, and knowing the underlying symptoms can help quickly diagnose a malfunction, and most often owners experience power loss, extraneous noise, or complete engine failure.
If the motor is buzzing but the screw is not spinning, the gearbox may have jammed or cut the veneer (if any). This can also be a sign of a speed controller malfunction. Vibration often indicates an imbalance of the screw or wear of the shaft bearings.
Let’s look at the table of the main symptoms:
| A symptom. | Possible cause | Decision |
|---|---|---|
| The engine won't start. | Battery discharged, oxidized terminals. | Charge the battery, clean the contacts |
| Vibration is strong. | Screw, screw line, line. | Replace the screw, clean the shaft |
| Power drop | Sulfation of battery plates, wear of brushes | Check the voltage under load, replacement brushes |
| Noise in the gearbox | Lack of oil, wear of gears. | Replace oil, defective gearbox |
If you find a problem you can’t solve on your own, don’t try to sort out complex nodes without experience. Electronic control units They are very sensitive and require specialized diagnostic equipment.
90 percent of the problems with electric motors are not caused by the breakdown of the motor itself, but by the state of the battery or the oxidation of the contacts. Always start your diagnosis by checking the power chain.
Regular maintenance can detect minor defects before they become fatal, so don't neglect prevention, and your motor will last for years.
Questions and Answers (FAQ)
How often should you change the oil in the gearbox of the electric motor?
Manufacturers often claim that the lubricant is filled for the entire life, but practice shows that when you use it actively (more than 50 hours per season), it is better to change the oil every 1-2 years, which allows you to remove metal shavings and moisture, prolonging the life of the gears.
Can an electric motor be used in salt water?
Yes, you can, but only if the model has the appropriate coating (corrosion protection), after each fishing in salt water, the motor must be thoroughly washed with fresh water and lubricated moving parts, and the anodes in salt water will be consumed faster.
Why does the electric motor work in jerks?
Most often, it is due to poor contact in the power supply chain (oxidation of the terminals, weak contact in the connector) or battery discharge. Less often, the cause lies in a malfunction of the control board or Hall sensor. Start checking by measuring the voltage under load.
Do I need to remove the screw for storage?
You don't have to remove the screw if you have the engine assembled, but it's recommended that you loosen the lock nut to take the voltage off the thread, or lubricate the thread with conservation lubricant, and make sure the shaft is clean and lubricated.