JETSURF JEA1 User manual

Version:
For models:
Revision date:
Jetsurf ELECTRIC
USER'S
MANUAL
JETSURF ELECTRIC
2.4 / ENG 09.09.2021
- JEA1


3
TABLE OF CONTENTS
TABLE OF CONTENTS � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � 3
1 INTRODUCTION� � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � 5
2 IDENTIFICATION AND WARNING LABELS � � � � � � � � � � � � � � � � � � � � � � � 7
2�1� MOTOSURF IDENTIFICATION LABEL� � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � 7
2�2� WARNINGS � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � 7
3 SAFETY WARNINGS � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � 10
3�1� DEFINITION� � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � 10
3�2� COMMON SENSE� � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � 11
3�3� BATTERY � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � 11
3�4� MOTOR PREPARATION � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � 12
3�5� CLOTHING � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � 12
3�6� PERSONAL FLOATATION DEVICE (PFD) � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � 13
3�7� LAW ENFORCEMENT � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � 13
3�8� UNDER THE INFLUENCE OF ALCOHOL OR DRUGS� � � � � � � � � � � � � � � � � � � � � � � � � � � 13
3�9� REGISTRATION � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � 13
3�10� EXCEEDED SPEED / NOISE � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � 13
3�11� ELECTRONIC DEVICES � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � 13
3�12� JUMPING WITH JETSURF � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � 14
3�13� REPORTING ACCIDENTS AND INSURANCE � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � 14
3�14� WASTE AND POLLUTION � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � 14
3�15� OTHER SECURITY ISSUES � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � 15
3�16� SAFE WATER OPERATION � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � 16
3�17� GENERAL CAUTION RULE � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � 16
3�18� GENERAL RULES � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � 16
4 OVERVIEW OF THE CRAFT � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � 19
4�1� JETSURF ELECTRIC DESCRIPTION � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � 19
4�2� STANDARD EQUIPMENT � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � 21
5 OPERATING INSTRUCTIONS � � � � � � � � � � � � � � � � � � � � � � � � � � � � � 23
5�1� CONTROL HANDLE � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � 23
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5�3� CONTROL UNIT SIGNALIZATION � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � 24
5�4� BATTERY STATUS SIGNALIZATION � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � 24
5�5� PERFORMANCE ADJUSTMENT � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � 25
5�6� CONTROL UNIT ERROR SIGNALIZATION � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � 26
5�7� ERROR EVALUATION OF THE CONTROL UNIT � � � � � � � � � � � � � � � � � � � � � � � � � � � � � 26
6 BATTERY AND CHARGING� � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � 27
6�1� BATTERY DESCRIPTION� � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � 27
6�2� INSERTING THE BATTERY � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � 28
6�3� REMOVING THE BATTERY� � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � 29
6�4� PROTECTION OF THE SOCKET AND PLUG AGAINST DAMAGE � � � � � � � � � � � � � � � � � � � � 30
6�5� SECURING THE BATTERY BEFORE TRANSPORT � � � � � � � � � � � � � � � � � � � � � � � � � � � � 30
6�6� BATTERY COOLING SYSTEM � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � 31
6�7� CHARGING � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � 33
6�8� STANDARD CHARGER EQUIPMENT � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � 34
6�9� CONNECTING THE CHARGER AND STARTING THE CHARGING � � � � � � � � � � � � � � � � � � � � 35
6�10� DISCONNECTING THE CHARGER � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � 36
6�11� INFORMATION DISPLAYED ON THE CHARGER DISPLAY � � � � � � � � � � � � � � � � � � � � � � � 37
6�12� ACOUSTIC WARNING SIGNALS � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � 38
6�13� ERROR EVALUATION � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � 38
7 ROUTINE MAINTENANCE TABLE � � � � � � � � � � � � � � � � � � � � � � � � � � � 40
8 BEFORE RIDING � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � 42
8�1� BRIEF CHECKLIST BEFORE RIDING � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � 42
8�2� STAND� � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � 42
8�3� SIDE FINS� � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � 43
8�4� MAIN FIN � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � 44
8�5� BINDINGS (STRAPS) � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � 45

4
TABLE OF CONTENTS
8�6� BINDING ADJUSTER� � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � 46
8�7� BASIC MOTOSURF CHECK BEFORE RIDING � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � 47
9 DURING THE RIDE � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � 51
9�1� SWITCHING ON THE CONTROL UNIT AND STARTING THE MOTOR� � � � � � � � � � � � � � � � � � 51
9�2� JETSURF START-UP PROCESS � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � 52
9�3� START FROM THE SHORE (IN SHALLOW WATER) � � � � � � � � � � � � � � � � � � � � � � � � � � � 53
9�4� START FROM DEEP WATER OR AFTER A FALL � � � � � � � � � � � � � � � � � � � � � � � � � � � � � 54
9�5� LEARNING HOW TO OPERATE CONTROL HANDLE ON JETSURF � � � � � � � � � � � � � � � � � � � 55
9�6� LEARNING HOW TO TURN ON JETSURF� � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � 55
9�7� LEARNING HOW TO RIDE THE JETSURF � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � 55
9�8� STOPS / FALLS ON JETSURF � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � 56
9�9� RESTRICTIONS OF PERFORMANCE WHILE DRIVING � � � � � � � � � � � � � � � � � � � � � � � � � 56
9�10� SAFE RETURN � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � 56
10 AFTER THE RIDE � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � 57
10�1� BRIEF CHECKLIST AFTER RIDING � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � 57
10�2� DRAINING RESIDUAL WATER FROM THE COOLING SYSTEM � � � � � � � � � � � � � � � � � � � � 57
10�3� RINSING THE BOARD � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � 57
10�4� MOTOR COMPARTMENT COVER MAINTENANCE � � � � � � � � � � � � � � � � � � � � � � � � � � � 59
10�5� TURNING OFF� � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � 60
11 STORAGE � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � 61
11�1� SHORT-TERM STORAGE � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � 61
11�2� LONG-TERM STORAGE� � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � 61
12 USER MAINTENANCE � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � 62
12�1� BALANCE VALVE REPLACEMENT� � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � 62
12�2� DRAINING WATER FROM THE BOARD � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � 62
12�3� REFILLING OF CENTRAL LUBRICATION VASELINE� � � � � � � � � � � � � � � � � � � � � � � � � � 63
12�4� BATTERY PLUG RUBBER REPLACEMENT � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � 64
12�5� LUBRICATION OF THE BATTERY PLUG� � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � 64
13 TRANSPORT � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � 65
13�1� TRANSPORT BY PLANE � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � 65
13�2� TRANSPORT TO THE SERVICE CENTER � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � 65
14 TECHNICAL INFORMATION � � � � � � � � � � � � � � � � � � � � � � � � � � � � � 66
15 WARRANTY � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � 70
Section 1� WARRANTY PARAMETERS� � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � 70
Section 2� APPLICATION OF THE WARRANTY AND CONDITIONS � � � � � � � � � � � � � � � � � � � � � 70
Section 3� EXCLUSIONS AND LIMITATIONS OF WARRANTY � � � � � � � � � � � � � � � � � � � � � � � � 71
Section 4� LOCAL WARRANTY SPECIFICATIONS� � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � 72
Section 5� DISPUTES � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � 72
Section 6� CONTACT � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � 72
16 NOTES � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � 77

5
Copyright 2019–2021; All rights reserved
Motosurfs were designed and manufactured by Motosurf World Cup and Formula 1 engineers
to expand the boundaries of water sports.
Motosurf parts and components are manufactured by MSR Engines s.r.o. based in the Czech
Republic. The company specializes in the development of internal combustion engines and
specialized electronics.
Motosurfs are manufactured in a single factory that uses the highest standards of production
technology as well as using only the best materials and components currently produced in
the European Union. This comprehensive in-house production allows MSR Engines to achieve
maximum production accuracy and eciency. Since 2017, the manufacturer has held the ISO
9001 certicate.
Motosurfs have been developed with an exceptional eort to minimize the impact on the
environment.
The information contained in this user's manual represents the latest product information at
the time of printing. As MSR Engines is committed to continuous product improvement and
technology development, MSR Engines reserves the right to make changes to the product,
components, specications or any other aspects of the Jetsurf motosurf without prior notice or
request to equip previously manufactured Jetsurf motosurfs with such changes.
Current changes can be found on the Jetsurf website (www.jetsurf.com). Check the
website regularly. This owner's or user's manual (the "User's Manual") cannot anticipate all
the circumstances associated with owning or operating a motosurf. MSR Engines strongly
recommends owners and users to regularly check the website of the Navigation Oce (www.
plavebniurad.cz) for the Czech Republic or relevant information of the Coast Guard and
/ or the body enforcing laws regarding the use of passenger crafts, with special regard to
information concerning passenger crafts. Also check out the Jetsurf website (www.jetsurf.
com) for updates and product information.
In some countries, a license is required to operate a craft or special regulations may apply.
1 INTRODUCTION

6
1 INTRODUCTION
This manual is intended to help you operate your motosurf easily and safely. It contains a
detailed description of the motosurf and its supplied or permanently installed equipment,
information on their operation and maintenance. Please read it carefully and familiarize
yourself with the craft before using it.
Do not use the Jetsurf unless the expected weather conditions (wind force and wave height)
correspond to the design category of your motosurf (see Chapter 14) because you will not be
able to operate the craft safely in these conditions.
This user manual is not a detailed guide to maintenance or repair. In case of any problems,
contact an authorized motosurf dealer or manufacturer. You have access to maintenance
instructions, follow them when maintaining your motosurf.
Maintenance, repairs and modications of the motosurf must always be performed by
trained and qualied persons. Modications that may aect the safety characteristics of the
motosurf must be veried, performed and documented by a competent person. The motosurf
manufacturer cannot be held responsible for modications that have not approved by
themselves.
Always properly maintain your motosurf and anticipate the deterioration of its condition that
comes with time and as a result of heavy usage or mishandling.
Every motosurf, regardless of its resistance, can be severely damaged if not used properly. This
is incompatible with safe navigation. Always adjust the speed and course of the craft to the
weather conditions (wind strength and wave height).
The person operating the motosurf must have suitable otation aids described in chapter
3.6. in this manual. It should be noted that in some countries the law requires the wearing of
buoyancy aids in any handling and use of motosurfs, so it is necessary to comply with their
national laws.
PLEASE KEEP THIS MANUAL IN A SAFE PLACE AND GIVE IT TO THE NEW OWNER IF YOU
DECIDE TO SELL THE CRAFT.

7
2 IDENTIFICATION AND WARNING LABELS
• The craft’s hull identi cation number is
located on the starboard side near the stern.
• The identi cation number can also be found
on the label in the motor compartment.
Please read the following warnings before using this craft. If you have any questions, consult
your Jetsurf dealer.
• The MSR1219 / ED sticker is located on the bottom of the battery.
• The MSR05210 / D2 sticker is placed in the battery compartment.
• The MSR05210 / D1 sticker is located on the top of the battery.
• The Class 9 Lithium Batteries sticker is needed to mark the battery box for air
transport.
• The Cargo Aircraft Only sticker is needed to mark the box with the battery for air
transport.
• for the US:
2.1. MOTOSURF IDENTIFICATION LABEL
2.2. WARNINGS
CZ-MSR123ABC123
JSU123ABC123
IMG0022
IMG0001A

8
2 IDENTIFICATION AND WARNING LABELS
2
1
3

9
2 IDENTIFICATION AND WARNING LABELS
4
5

10
PLEASE READ THIS USER MANUAL BEFORE USING YOUR JETSURF MOTORIZED SURF
FOR THE FIRST TIME.
If any of the information is not completely clear to you before putting the motorized surfboard
into operation, contact an authorized dealer who will provide you with further information
and explanations. At Jetsurf, safety is paramount, and all owners and users need to pay equal
attention to it.
This user manual cannot anticipate all the circumstances associated with the maintenance
and operation of a motorized surfboard. It provides basic safety information and is not
comprehensive. MSR Engines urges all owners and users to periodically review U.S. safety
information. Coast Guard (www.uscg.mil and www.uscgboating.org) * and to monitor other
websites and craft safety authorities that apply to the relevant areas / regions that should
govern the operation of Jetsurf motorized surfboards.
Safety warning symbols are used to alert you to a potential risk of injury. Follow all
safety instructions that appear next to the symbols to prevent possible injury or
death.
DANGER
CAUTION
WARNING
These warning icons appear throughout this user's manual.
"Jetsurf" or "Motorized board", "motorized surfboard", abbreviated to "surfboard", "board",
"craft" in this manual are interchangeable terms and means a craft that uses a built-in electric
motor. The motor drives a jet pump, which is the primary source of propulsion. The Jetsurf is
designed to be operated by a person ("rider" or "user") standing or kneeling on the board. The
direction of the movement of the Jetsurf is controlled by the movement of the rider, the speed
is controlled by the throttle control trigger located in the control handle.
Indicates a high risk of possible death or serious injury if safety
precautions are not observed.
Indicates that there is a risk of injury or damage to the craft or to parts
of the craft if safety precautions are not observed.
It recalls safety principles or directly alerts you to dangerous activities
that could cause injury or damage to the craft or to parts of the craft.
NOTE
Indicates comments or recommended procedures.
* Applies to the USA.
3.1. DEFINITION
3 SAFETY WARNINGS

11
3 SAFETY WARNINGS
Warning
It is the responsibility of the owner and / or user to act in accordance with the
safety-related rules set forth in this user manual and to regularly review the safety
information provided by government agencies and local jurisdictions. Owners /
users should always use common sense, whether the motor is running or at rest. Failure to
follow these instructions could result in serious injury or death.
It is important for all owners and users to be prepared to maintain and operate a motorized
surfboard responsibly and with common sense.
Riders are reminded that common sense should be the rule for all trips. Although some objects
are visible above the surface and can be easily avoided, it is necessary to pay special attention
to objects below the surface.
Common sense considerations are important for the safety of riders and users of other crafts,
ships and passengers on board. Also, when using motorized surfboards, use common sense
to keep the board in good condition for as long as possible.
MSR Engines cannot anticipate all types of activity or careless handling that could lead to death
/ injury or damage. The user accepts responsibility for the use of the motorized surfboard
in a safe and reasonable manner. Special attention must be paid to the surroundings and
accidents must be avoided in all circumstances.
Getting to know the operation of crafts in the waters where the motorized surf will be operated
is extremely important.
Currents, especially strong currents, can a ect the performance of motorized surfboards and
endanger the safety of the user. Watch out for buoys and other markings.
Warning (Risk of injury)
There is a risk of electric shock when working on high-voltage components. Work
on high-voltage components requires special training, quali cations and tools.
All work not described and explained in this manual should only be carried out by trained
specialists (your authorized Jetsurf dealer will be happy to help you).
Do not open either the electric motor or the lithium-ion battery.
3.3. BATTERY
3.2. COMMON SENSE
Warning (Risk of injury)
All riders must wear a helmet, life jacket and leash when handling and riding
under all circumstances to prevent serious injury or death in the event of an
accident (see Chapter 3.5 for details).

12
3 SAFETY WARNINGS
Warning (Risk of injury)
Persons in the vicinity of the moving parts of the motorized surfboard motor
must take care of their safety so that their clothes or hair do not get caught into
the moving parts, as this could result in injury.
Because the motor contains moving parts, owners / users should never wear loose clothing
while the motor is running. Straps, buckles as well as the edges of fabric can become entangled
in the moving parts of the Jetsurf.
Long hair should be arranged so that it cannot become entangled in the moving parts of the
Jetsurf.
Internal injuries can occur near the nozzles due to water entering the body cavities. Ordinary
swimwear does not su ciently protect against forcible entry of water into the rectum or vagina.
All riders must wear at least the lower part of the neoprene or any other clothing that provides
the same protection. It is recommended to wear shoes, gloves and goggles.
Helmets are mandatory items of safety equipment and must be worn throughout use. Users
(even experienced riders) are expected to fall o the motorized surf from time to time. Helmets
provide protection in case the user hits his head on the surf. Helmets should be made to be
worn in water to t well and be relatively light. The manufacturer of MSR Engines makes no
statements or promises regarding protection, including that provided by helmets.
The use of a safety cord (leash) on the arm or leg is mandatory and must always be used when
using Jetsurf.
Touching any part of the motor while it is running, especially any part that is
moving, can result in serious injury or death. If access to the motor is required for
any reason, the motor must be switched o . The motor may become hot during
operation and skin burns may occur if it is not allowed to cool before intervention.
Warning (Fire hazard)
Warning (Risk of injury)
Even when ready to ride, the motosurf is very quiet and therefore less observable
for your surroundings.
Remove the battery from the board before working on the motosurf.
When carrying out work on the motosurf, make sure unauthorized persons don’t have access
to the craft.
Damaged lithium-ion batteries present a re hazard. In the event of severe
mechanical damage, an internal short circuit between the cells can occur and
subsequently self-ignite.
If the lithium-ion battery is badly damaged, place it in an area where nothing can ignite and
contact your Jetsurf dealer immediately.
3.4. MOTOR PREPARATION
3.5. CLOTHING
Warning (Risk of injury)

13
3 SAFETY WARNINGS
It is the responsibility of the owner / user to comply with all laws, statutes and personal safety
requirements. The European Union standard ISO 12402-3: 2020 species the requirements
for life jackets for adults and children when used at sea or in waves. U.S. federal law in most
cases requires the wearing of personal otation devices (PFDs) approved by U.S. Pat. Coast
Guard*. State and local laws and statutes may dier from federal requirements.
As Jetsurf motorized surfboards are generally dened as passenger crafts, it is essential that
all users contact local authorities for any information regarding the use of safety accessories.
MSR Engines assumes no responsibility for users' actions that do not comply with applicable
laws that apply to the use of passenger crafts in each specic location.
Authorized Jetsurf dealers can assist owners and users to ensure proper equipment in
accordance with the conditions and laws of the country.
At full capacity, users may be asked to stop surng and allow the U.S. Coast Guard* or state
law enforcement personnel to stop by the side of the craft. Some countries, states, and
jurisdictions may require a certain minimum age for motorized surng, training, and / or user
license ownership. Requirements vary widely. Where access is allowed to minors, such surng
should only be performed under the supervision of an adult.
Every year review the legal requirements and safe operation of motorized surfboard.
Under no circumstances should a rider on a motorized surfboard be under the inuence of
alcohol or drugs, including prescription drugs, which have potentially disorienting side eects.
It can be as dangerous as driving a car in a similar situation!
In many jurisdictions, it will not be necessary to register a motorized surfboard for the main
purpose of use. However, because the surf is motorized, registration may be required. Before
using your board for the rst time, contact your local government oce in the area where your
motorized surfboard will be used the most.
Some areas have speed limitations due to wave generation and maximum noise.
Users of motorized surfboards are obliged to comply with these requirements.
Operating a motorized surfboard requires your full attention. MSR Engines strongly
recommends leaving mobile phones (including waterproof models), radios, and other devices
on land while you ride. Distractions can potentially lead to accidents.
* Applies to the USA.
3.6. PERSONAL FLOATATION DEVICE (PFD)
3.7. LAW ENFORCEMENT
3.8. UNDER THE INFLUENCE OF ALCOHOL OR DRUGS
3.9. REGISTRATION
3.10. EXCEEDED SPEED / NOISE
3.11. ELECTRONIC DEVICES

14
3 SAFETY WARNINGS
Most laws require the reporting of accidents in which:
• A person dies
• A person disappears from the craft in a situation that could result in death or serious
injury.
• A person is injured and needs medical attention beyond rst aid.
• Damage occurred to the craft and / or property in excess of the statutory amount.
The total amount may be lower in some jurisdictions and it is the responsibility of the
owner / user to verify the amount.
• The motorized surfboard is destroyed.
In any case where other craft or persons nd themselves in distress, motorized surfboard
users are required by law to provide assistance, provided that this would not endanger the
motorized surfboard user himself.
The owner of a motorized surfboard is generally responsible for damage or injury that may
occur when another person uses the motorized surfboard. Owners must not allow any other
person to use Jetsurf without prior instruction on its proper use and the risks involved. Owners
are strongly advised to obtain appropriate liability insurance and property insurance in case
of possible court decisions in these cases. Theft and damage that occur on the mainland are
other reasons for insurance.
The U.S. Coast Guard* and / or any other competent authority managing the areas where
Jetsurf is used provides detailed information on waste disposal. In general, waste, including
biodegradable waste, must be disposed of properly on shore.
If the user has the impression that the surfboard is leaking substances that could contaminate
the water during its operation, we recommend presenting the surfboard to an authorized
Jetsurf dealer for repair. Pollution laws and regulations are strict in most areas.
* Applies to the USA.
3.13. REPORTING ACCIDENTS AND INSURANCE
3.14. WASTE AND POLLUTION
NEVER jump with a motorized surfboard! Damage caused by improper use of Jetsurf (such as
jumps) is not covered by the warranty.
3.12. JUMPING WITH JETSURF

15
3 SAFETY WARNINGS
Riders should:
• Be at least sixteen (16) years of age or at the minimum age required in the
jurisdiction in which the motorized surfboard is being operated. Motorized
surfboards were designed for adults.
• Wear suitable protective equipment, especially a helmet, life jacket and leash.
• Ensure that the motorized surfboard is in excellent condition and at the same time as
well prepared as possible for operation. Make sure the battery is functional and well
charged so that you do not get stuck far from shore.
• Avoid operation in bad weather, including, but not limited to, strong winds, rain with
reduced visibility, warnings of the threat of impending dangerous weather, high
waves, or any weather in which the rider feels uncomfortable overall.
• Do not use motorized surfboards if the air temperature is below 10 °C (50 °F).
• Avoid continuous operation in water that is too shallow or brackish. The motorized
surfboard motor is powered by a jet pump, algae and other plants can lead to
clogging of the cooling intake. If you suspect that contaminants or small objects have
entered the cooling system (the ow of water owing out of the water outlet of the
cooling system decreases or the water stops owing completely), stop immediately
and perform routine maintenance by cleaning the cooling system.
• Maintain speed and riding style that allow riders to avoid collisions with objects
(above and below the waterline), buoys, landing docks, shore and other crafts.
• Know and apply navigation rules and regulations.
• Ride on a motorized surfboard alone. The motorized surfboard is designed for one
(1) person weighing up to 100 kg.
• Never exceed the maximum specied load capacity.
• Maintain a line of sight, which means that there should never be another person
directly in front of you while riding.
• Do not use motorized surfboard to transport things. It is essential that the rider
maintains control of the motorized surfboard with the control lever. The rider should
never be distracted and should have full control of the motorized surfboard.
• Always have a shut-o key and a cord with a paracord bracelet attached around the
wrist. When the rider falls, the contact with the control handle disconnects and the
motor stops immediately.
3.15. OTHER SECURITY ISSUES

16
3 SAFETY WARNINGS
Laws, rules, regulations and how to enforce them have been developed around the world to
ensure the safe and proper operation of all crafts. It is the responsibility of the owner and / or
user to familiarize themselves with all applicable regulations of the authorities managing the
waters in which the motorized surfboard will be operated. Information for users in the Czech
Republic can be found on the website:
• www.plavebniurad.cz
Information for users in the United States can be found at:
• www.uscg.boating.org
Information for users in Canada can be found at:
• www.tc.gc.ca/eng/marinesafety/menu.htm
Other countries have their own laws or participate in international rules. Always check the
markings and rules that apply to any water areas where operation will occur.
Rule 2 of the International Regulations states: "In the application and interpretation of these
rules, account shall be taken of all safety aspects of navigation and collisions and of any special
circumstances which may cause a departure from the above rules in order to avoid imminent
danger."
Always use common sense when encountering other crafts. Motorized surfboard is considered
a motorized craft and is expected to give right of way to crafts that have less maneuverability.
A non-priority craft is obliged to take correct and timely measures to stay out of the route of
the craft which has the right of way. Under normal circumstances, a non-priority craft should
not enter the path of a priority craft. Always move in such a way that the preferred craft can
record your maneuver.
If you encounter another motorized craft, there are three (3) main situations to help you avoid
a collision:
• Encounters (ie approaching another craft head-on);
• Crossing (ie crossing the path of another craft);
• Overtaking (ie overtaking or being overtaken by another craft).
When encountering another craft head-on with the risk of a collision, neither craft has the right
of way. Both crafts must change course to avoid an accident. Keep the other craft on the port
side (on the left side) if it is not possible to avoid each other by keeping course.
When two (2) motorized crafts cross paths with a risk of collision, the craft that sees the other
craft crossing the path on the starboard side (on the right side) must give way.
When overtaking, you have priority. The other craft is expected to maintain course and speed.
Avoid him when overtaking. When overtaking another craft, maintain course and speed so that
the overtaking craft can avoid you.
3.16. SAFE WATER OPERATION
3.17. GENERAL CAUTION RULE
3.18. GENERAL RULES

17
3 SAFETY WARNINGS
When you are about to turn on the water, blow a long whistle for four (4) to six (6) seconds. Be
careful regardless if you hear an answer or not.
Under normal operating situations, standing shing boats and sailboats (at rest or in motion)
have right of way in driving.
Always learn beforehand and pay attention to buoys and other markings. A unied state
waterway marking system was designed for internal waterways in the United States. Markings
may vary depending on geographical location. Always consult the relevant authorities before
using motorized surfboard in unknown waters.
ENCOUNTERS
When two crafts approach each other on the
water, one craft has priority in the voyage
and is referred to as the "priority craft".
The second craft must give way to the rst
or give way and is referred to as the "Craft
which gives way". To illustrate: in the picture
(A) you are the Jetsurf in the middle. You are
required to give way to any craft in the white
eld (you are a "craft which gives way"). Any
craft in a darker area must give way to you
(you are a "priority craft"). If you are both
pointing directly at each other, gure (B),
you both need to make way. You should
turn right to keep the approaching craft
on the left or port side. This rule does not
apply if the crafts will avoid each other if you
continue at the set course and speed.
CROSSING
If you and another craft cross at such a
distance that there is a risk of a collision and
the other craft is on your starboard side,
you must avoid it or stay out of its way. If
the other ship is on your port side (left side),
keep the same course and speed until the
other ship avoids you according to the rules.
IMG0063
A
IMG0064
B
IMG0065

18
3 SAFETY WARNINGS
OVERTAKING
When overtaking another craft, you are the "priority craft".
The other craft is expected to maintain course and speed, and you are required to stay o
course until you overtake it. In the event that another craft overtakes you, you should maintain
your direction and speed so that the overtaking craft can safely bypass you.
MSR Engines cannot anticipate every situation that may arise while driving. The
information we provide here is general and may not apply in the area where you
ride a motorized surfboard. Always carry out a thorough inspection with emphasis
on safety during preparation and planning.
IMG0066

19
4 OVERVIEW OF THE CRAFT
4.1. JETSURF ELECTRIC DESCRIPTION
IMG0023
IMG0002
Grip
AB
A
B
Indicator
Battery locks
Motor compartment hood
Binding (Pad and Strap)
Inspection lid
Central lubrication cover Equalizing valve cover Cooling system water outlet
Battery locks
Battery locks
Battery locks
Cooling system water outlet
Equalizing valve cover
Inspection lid
IMG0050D

20
4 OVERVIEW OF THE CRAFT
IMG0024
IMG0025
IMG0003
Throttle control cord
Control handle
Main FCS fin
Main fin base
Main fin base
Side FCS fin
Main FCS fin Side FCS fin
Control handle
Jet pump
Main fin FCS plug
IMG0068 IMG0067 IMG0026
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