Our KOOTU Carbon Fiber Surfboards are mainly powered by gasoline engines, which are more powerful, longer-lasting and faster.

Other surfboards are mainly powered by batteries, which are underpowered, have a short lifespan, and can suddenly run out of power while playing in the ocean.

Our KOOTU surfboards are your first choice for surfing.

Precaution items

1.Charging battery.

Please full charge the battery before every play, use 220v current to charge the battery.

There is indicator light on the charger.

* Red: During Charging

* Green: Full charge or disconnect.

From 0% to 100% capacity , at least 5 hours of charging time.

The voltage of full battery should be 16 -16.8V

（please make sure connect joint correctly , the 2 arrows face each other ）

Warning:

Battery must be carry out for charging. Forbid to charging the battery inside the engine compartment. Please storage the battery separately when you don't use the product. Don't leave it inside the engine compartment.

2.Connect the battery to engine correctly.

Connect the battery to electric system main line , make the 2 arrows face each other too.

3.Fuel proportion

Please use #95 gasoline (or above) and lube oil.

Proportion is 30:1

4.Engine start difficulty.

For the first time of use. The start might be difficult. Please turn the carburetor handle open->close->open , repeat action during start engine . Increase the air intake pressure to make start successfully.

5.In any case (ashore or in water), Don’t press the starting button for more than 5 times continuously，in case cause starter motor and starter battery over heat and damage.

6.If starting the engine on lands, do not stay for more than 30 seconds to avoid overheating of the engine.

The engine is water cooling engine, it need flowing water to keep cool.If start engine successfully on ashore, please shut down the engine in time. Don’t let it running without water for long time.If need to demonstrate or function testing on land, please connect to water pipe and supply water.

Besides, if remain starting position on lands, the Engine RPM will stay at high rate due to no power loading , water resistance.

If the engine is run at full speed without a power load, it may cause the engine to "overspeed" Phenomenon- the engine continues to run uncontrolled even the safety key is removed.(if this happen, immediately block the carburetor intake tunnel to choke the engine stop).

So if you want to test full power of the surfboard, please do it on water.

7.For the first time to use, don’t go too far away from shore.

Afraid of stand, Lie on the board tail, tail and exhaust mostly sunk in water and stay at low speed which cause the poor exhaust , is the mainly reason for engine shut down. At this situation, user might continuously restart the engine , and will also cause battery , motor too hot , and cause battery damage or burnt out.

New user of the surfboard, due to incorrect use, there might be many problem happen. So we suggest new user to not going too far away from shores.

8.Don’t continuously restart engine in short time!!!

To prevent battery and start motor damage.

If restart difficulty, after few time of trial of restart engine, still unable to restart the engine , please return to shores as soon as possible and troubleshoot first.

9.Check the muffler and exhaust valve regularly.

Please check the muffler and exhaust regularly ,exhaust blocked will cause engine start difficult or failure .

10.Introduction of water drain hole.

① Drain hole of engine cooling water (on the right side of surfboard body)

② Built-in water pump Drain hole (on the left side of the surfboard body)

The water pump located at bottom of engine compartment.When surfboard capsize, there might be water pour in the engine compartment, the water pump will suck the water and pour out of it.

When the rider fall into water, surfboard capsize, please upside down the surfboard first. At this moment, if you want to lean on the surfboard rest a while, and prepare for next riding.

1.Please insert the safety key first, let the electric system and water pump working. (Engine remain shut down position)

2.Please don't put your entire weight at the ②Built-in water pump Drain hole. It might causes water go inside the surfboard.

If fall into water, after many trial of starting engine and it still failure , please return to lands as soon as possible, after problem-shot and solve, then continue to play.

10.Wash and Clean

After use,please wash and clean the surfboard.

Must clean if use it in sea or salt water!(use clean fresh water)

Use a hot gun or hair dryer to complete dry the engine compartment, and spray WD-40 to engine parts like carburetor,propeller to prevent rusting.

Engine failure quick trouble shoting

1.Firstly check the propeller joint

Turn the propeller joint counterlockwise by hand, if it can turn without stuck, meanwhile you can feel the crankshaft resistance , then this part is normal.

2. Test the battery voltage

Test the battery voltage, the battery voltage must higher than 14V at least.

3. Check the control handle

Locate the control handle connector and connect it to a new control handle. Insert the Magnetic key into the control handle and press the starter button to try to start the engine.

4. Check the motor

Using a heat gun (or hair dryer ), heat the side cover bolts, then remove the side cover and motor.

Remove the bottom cable and link it directly to the starter motor and start testing the motor.

Insert the magnetic key and press the start button, the motor spin--> normal, the motor does not spin--> motor failure, need to replace.