Knowledge base


Here you can find additional resources and information about one of our most popular water toys – Jetsurf.

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Jetsurf Repair

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Before attempting to operate Jetsurf for the first time, read the manual and pay special attention to the warnings and disclaimers. Most injuries can be avoided by using proper technique when learning.


– Put the key into the handle and the board will start after 5 seconds.
– Go on your knee and put the front foot in the front foot strap.
– Once feel comfortable, put the rear foot into the rear strap. – Balance your body weight, by helping with the handle and stand up.

A 2-stoke engine is powering the Jetsurf. To prevent damaging your engine, you always need to mix petero with oil in 50 to 1 ratio (50 units of petrol and 1 unit of oil).
Example: to 52l of fuel add 0,04l/0.4dcl/40ml of oil

– Unplug and remove the spark plug.
– Tilt the Jetsurf towards the spark plug opening down (its head engine).
– When the spark plug screwed out, start turning the shaft with your hand. While turning the shaft, you should see water coming out head engine. Continue until water stops coming out.
– When water stops coming out of the engine head, place and keep the key on the indicator, near the engine area.
When the shut-off key is placed, the starter starts turning without ignition on the spark plug. Continue turning the engine until only fuel is splashing out of the spark plug opening (fuel and water form a white emulsion).

– Disconnect the second CPC coupling connecting the tube coming out of the tank to the tube going to the injector. The CPC coupling has a security clip which must be pressed when disconnected.
– Disconnect the fuel pump connector.
– Undo the velcro on the tank.
– Move the tank out upwards.
– Disconnect the hose on the other side of the tank, leading to the suction hose.

– Plug your battery charger to the electrical outlet and Jetsurf ICU. (Located in the eFoil bag).
– Select LiPo battery type.
– Choose charging mode (normally standard)
– Select “3S” battery cells, and up to 5A battery current.
– Best practice for battery life is to slowly charge the battery (ex. 2A)
– For safety purposes, you always need to be near the battery, while it is taking charge

– Insert the engine shut-off key in the engine shut-off switch placed on the upper part of the control handle for minimum 4 seconds then take the key out to activate ICU and other accessories
– Insert the key in the engine shut-off again. After 3 seconds the engine starts independent of the throttle.
*The running engine can be switched off by pulling the key out of the engine shut-off switch.


The JetSurf board is a state-of-the-art watercraft and just like any other machine, it requires some level of maintenance.

It is essential that your Jetsurf be serviced as per the ‘Maintenance schedule’ to retain its high level of performance, safety, reliability, and warranty.

Maintenance Guidelines

– Use only quality gas with Octane number 91 and up
– Use only two-stroke full synthetic oil
– Rinse the board after every salt water use
– Change the spark plug every 10 hours of cruising (gap between the electrodes of the spark plug should be 0.7-0.8mm)
– Charge the ICU to keep the required voltage
– Lubricate the freewheel with the freewheel grease
– Maintaining a top layer of quality wax on the surface of the motorised power board is crucial for keeping of the original high gloss surface for years to come. Use only high quality wax, such as carnauba wax.
– Check the technical equipment of the engine compartment regularly in order to prevent bigger dam- age to the power board.
– Your Jetsurf needs to be serviced at least once per year.


– Attach all the fins.
– Set the straps
– Charge the battery in the ICU
– Top up the fuel
– Check the tubes of the cooling system and all the connections and tubes
– Check whether all the connectors are connected
– Check the spark plug boot, check the spark plug, check the spark plug boot holder (safety spring) so that boot can’t get loose while riding
– Check the throttle control and fuel system
– Spray thoroughly all the engine parts with MOTOREX INTACT MX 50 oil
– Start the engine, check the engine operation and throttle control; MAXIMUM FOR 10 seconds!!!
– Check the bilge pump
– Apply the grease in the exhaust silencer

– Tilt the JetSurf and pour the water out of it
– Start the JetSurf with its tip up, MAXIMUM FOR 10 seconds!!!
– Wash the whole JetSurfTM with fresh water, including the engine compartment, then let the engine run for about 5 seconds (MAXIMUM FOR 10 seconds)
– Let the JetSurf dry
– Spray all the engine parts thoroughly with MOTOREX INTACT MX 50 oil
– Charge the ICU battery
– Store your JetSurf with the open engine cover

– If the break is longer than one week, it is necessary to perform other tasks. Do not underestimate these steps. Keep in mind that if you look after the JetSurf properly, you will increase the life of all its parts.
– For at least 3 days always start the engine and accelerate several times.
– Take the fuel tank out of the board. Pour all fuel out of the fuel tank and clean it thoroughly. Never store the Jetsurf with fuel in the tank.
– Always once in every 6 months, grease all the engine parts with MOTOREX INTACT MX 50 spray.
– In winter or when JetSurf is not used, it is necessary to charge the battery in ICU at least once in every 3 months.
– Check grease in the freewheell.


If you’re having an issue with your Jetsurf board, you may be able to find out what’s wrong using the process of elimination. Make a list of things that could be causing the problem and then test them out one by one to eliminate them. Once you’ve identified the source of your issue, it will be easier to find a solution.

General troubleshooting

– Check if the water came inside the engine. Clean the spark plug and the engine.
– Possible cause: too much fuel in the engine. Clean the spark plug and replace carburetor.
– Check if you have enough fuel.
– Try replacing the spark plug, as it might be defective.
– If spark plug sparks after the engine shut-off key is pulled out, the timing sensor has failed

– Check if you have a low battery and recharge if necessary.
– Check and clean contacts on the cables of the remote control handle.
– Check if relay in the control handle detect the engine shut-off key and clean the contacts.
– Check if ICU cables are damaged.

– Starter might be burnt
– Possible engine jam
– Possible stuck jet pump

If you don’y charge the battery regullary, it will run flat.
You can try to revive the battery by following procedure:
– ideally remove the ICU from the jetsurf
– select NiMh battery on the charger
– set current on low amperage (0.1A)
– set battery cell to 1s
– start charging to lift the battery voltage to 11.6V
– after reaching enough voltage, change the recommended charging procedure
* for safety purposes you need to be always near the battery while it is charging. You are making procedure on you own risk.


Safety information

Riders are reminded that general common sense should be the rule for any and all outings. While some objects appear above water and are easily avoidable, it may be necessary to pay special attention to underwater objects as well.
In using the power board, some common sense considerations are for safety of the rider and other vessel riders, boaters and passengers, while common sense also is necessary to preserve the power board in good shape.

JetSurf cannot anticipate every type of activity or negligent performance that could result in death/ injury or damage. The operator accepts responsibility for use of the power board in a safe and sensible manner. Particular attention must be paid to surroundings at all times to avoid accidents. Care must also be taken to avoid situations in which carbon monoxide fumes may become trapped between objects or may be released out-of-the-water. Be certain to read the information regarding carbon monoxide poisoning contained in this section of the Owner’s Manual.

With regard to damage to the power board, riders should avoid running it all the way to shore. Often, beaches or shoreline are made up of rocks and/or sand that can scratch or dent the power board. Such occurrences are not covered under the JetSurfTM Limited Warranty statement, which appears later in this Owner’s Manual.
Familiarity with the nautical waters in which the power board will be operated is extremely important. Currents, especially strong ones, can affect the performance of the power board and threaten the safety of the operator. Pay attention to buoys and other markers also. It is critical for all owners and operators to be prepared to maintain and operate the power board in a responsible and common sense manner at all times.

All riders must use helmet, life vest and a safety leash at all times while operating JetSurfTM to prevent any serious injury or death in the events of accident (you can find more details in CLOTHING category).

Carbon monoxide (CO) is a gas and it can be extremely difficult to detect, because it has no color, taste or odor and it can accumulate without awareness. Exposure can be fatal in a matter of minutes. The effects of CO are cumulative and repeated exposure to low amounts can have a similar effect to a single high concentration exposure. Carbon monoxide should be avoided, while any exposure should be treated immediately.

The exhaust on the power board is purposely located at the stern (rear) of the board. While emissions from the engine are relatively low due to its purpose-built design which ventilates into the water under normal operation, there are still some CO fumes as a natural by-product of a combustion engine. Therefore, riders must operate the power board as designed. No one should ever be towed behind the power board while it is in operation. The engine should not be operated when the power board is out of the water (this can cause damage to the engine from over-heating also).

CO enters through the lungs and blocks oxygen. Milder symptoms of poisoning include headache, nausea, itching or irritated eyes and dizziness. Victims often become increasingly weak and disorient- ed. These symptoms should not be confused with alcohol intoxication.
Individuals who suffer from lung- or heart-related issues may be affected more quickly. Alcohol and tobacco use also accelerate symptoms. For all riders, regardless of health or ingestion, note that physical activity will also hasten CO absorption.

In the even that someone shows evidence of CO poisoning, immediately shut off motorized surf- board or any other combustion-engine in the area. Provide fresh air, if possible, and move the victim to an area away from the CO concentration. Provide first aid and seek professional medical assistance immediately.

Operation of the power board engine out of the water for more than ten (10) seconds can result in permanent damage to the engine and exhaust system, (temperatures of cylinder shouldn’t be higher than 65 °C/ 149 °F). Such damage is not covered under the warranty.

Touching any part of a running engine, in particular any component that is moving, can result in serious injury or death. If it is necessary to ac- cess or touch an engine for any reason, the engine must be turned off. Engine also become increasingly hot with usage and can result in skin burns if engine is not allowed to cool prior to touching it.

Never transport fuel except in D.O.T. (USA) or CE (Europe) -approved containers.
Transporting fuel in the engine or fuel tank can result in damage to Jet- SurfTM or injury to people handling the board. Fumes from fuel are even more volatile, explosive and generally dangerous than liquid fuel. Never transport JetSurfTM power board with the tank inside.

Persons in range of the power board’s engine moving parts should exercise caution to avoid having clothing or hair come in contact. If clothing or hair become entangled in moving parts, injury may result.

If the owner/operator has long hair, it should be tied up or secured in some fashion so that the hair cannot become entangled in the engine’s moving JetSurfTM.

An injury can occur nearby the jets as a result of water influx into the body cavities. Conventional swimwear does not protect sufficiently against water being forced into rectum or vagina. All the riders must wear at least the bottom part of the neoprene suit or any other garment providing the same protection. We recommend wearing footwear, gloves and glasses.

Helmets are a compulsory item of safety gear and must be worn at all times while riding. It is expected that operators will, from time to time, fall off the power board, even in normal operation. Helmets provide protection in the event the operator’s head would strike the board. Helmets are therefore a mandatory accessory and should be manufactured to wear on the water, fit properly and be relatively lightweight.

The use of an arm or leg leash is compulsory and must be used at all times while using JetSurfTM.

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