Eton VIPER 90, VIPER 70, VIPER 50M, VIPER 90R User Manual
E-TON
VIPER
OWNER’S MANUAL
Viper 50M, Viper 70, Viper 90
and Viper 90R
Important Notices
READ and UNDERSTAND this owner’s manual
Both the operator and the adult supervisor should completely read and understand this
owner’s manual before operating this vehicle. This owner’s manual will instruct you in the safe
operation of the vehicle.
NO Passengers
This vehicle was designed for operation ONLY by the operator, (Driver). The load limit
and seat configuration is designed for the operator ONLY. It is not safe to carry passengers on
the vehicle.
ADULT Supervision and Instruction are REQUIRED.
This vehicle MUST NOT be operated by a youth without Adult supervision and
instructions. Unattended operation without adult supervision could result in injuries. E-TON
recommends that both the operator and the adult supervisor attend an ATV safety instruction
course.
ALWAYS Wear Protective Clothing
While operating this vehicle, the driver must always wear protective clothing. Protective
helmet with face shield, elbow and knee pads, long leg pants, gloves and hard soled boots
should always be worn when operating this vehicle.
OFF ROAD Use ONLY
This vehicle is designed and manufactured for off-road use only. Operation on public
streets, roads or highways is illegal and very dangerous.
OBEY all State and local laws and regulations
Each state and local governing agency has laws and regulations for ATV operations. It
is the owner’s responsibility to know, understand and obey these laws and regulations.
SPEED RESTRICTION Devices
This vehicle is equipped with electronic speed limiting devices. Any attempt to change,
over-ride or bypass these devices may cause dangerous operating conditions.
Age Recommendations by model size
ATV Model Size ETON Models Minimum Age Weight Capacity
RXL-40Ee
Under 70cc
70 - 90cc
over 90cc CXL-150 16 years and older 250 Lbs
150 cc CXL-150 16 years and older 300 Lbs
RXL-50M
RXL-70
RXL-90
RXL-90R
6 years and older 70 Lbs
12 years and older 250 Lbs
Page 1
Table of Contents
Safety notes 4
Vehicle identification number location 8
Controls, switches and feature locations 8
Control feature operations
Engine stop switch 9
Manual Choke Lever 9
Throttle lever 9
Front & Rear Brakes 10
Parking brake 10
Safety Tether Switch 10
Remote Stop / Start Switch 10
Fuel System
Fuel tank 11
Fuel valve 11
Inline Fuel Filter 12
Engine Oil
Oil Tank 12
Oil Indicator light 12
Tires & Wheels
Tire inspection 13
Tire pressure 13
Spark Plug 13
Spark Arrester Screen 13
Air Filter 14
Braking Systems
Front Brake Inspection 14
Front Brake Adjustment 15
Rear Brake Inspection 15
Filling the Brake Fluid Reservoir 16
Purging Brake Line 16
Drive Chain 17
Throttle Lever 17
Electrical Battery 18
C.V.T. Air Filter (Transmission) 18
Transmission Gear Selector Control 19
ATV Break-In Procedure 19
Changing Transmission Oil 18
Pre-Operation Inspection 20
Starting procedure 20
Driving 21
Turning 21
Parking 21
Page 2
Specifications
Viper 50M 22
Viper 70 24
Viper 90 & 90R 26
Maintenance Schedule 28
Maintenance Record Chart 28
Wiring Diagram Viper 50M 29
Wiring Diagram Viper 70 30
Wiring Diagram Viper 90 31
Wiring Diagram Viper 90R 32
Manufacture’s Warranty 33
Owner’s Notes 35
Page 3
Safety Notes
1. Both the adult supervisor and youth operator must fully understand everything in this manual
before operating this vehicle.
2. This vehicle was designed for the operator only. NO PASSENGERS should be allowed on
this vehicle.
3. This vehicle is designed for operation on level, obstacle free off-road areas.
4. Riding this vehicle on public roads or highways is illegal. If it becomes necessary to cross a
public road or highway, the vehicle should be pushed across using extreme caution.
5. This vehicle MUST NOT be operated without adult supervision and instruction.
6. DO NOT operate this vehicle while under the influence of drugs, alcohol or other medication
that impairs judgment or coordination. Doing so can result in serious injury or even death.
7. Maintain a safe distance between your vehicle
and other vehicles with whom you are riding.
8. READ the owner’s manual carefully before
riding.
9. ALWAYS wear a helmet, face shield, elbow &
knee pads, hard-soled boots, gloves, and protective
clothing while operating this vehicle.
Page 4
10. NEVER ride this vehicle unless it has
been properly maintained and adjusted.
Always perform a pre-ride inspection of your
vehicle. Look for wires, bolts and other
fasteners that may have come loose on
previous rides. Inspect the drive chain,
throttle and brakes for proper adjustment and
operation. Check the engine oil level in the oil
tank. Check fuel level and inspect for fuel
leaks. (Remember, you can ride further in 1
hour than you can walk back in 1 day!)
11. WARM UP your body with some exercises
before riding. This helps to make you alert and
prevent cramping and other discomfort.
12. LEARN TO RIDE this vehicle properly and
safely. Have an experienced rider teach you the
safe operation of your vehicle. E-TON
recommends you take an ATV riding course
before you first ride your vehicle.
Page 5
13. NEVER REFUEL this vehicle when hot. Ask
your adult supervisor to refuel your vehicle.
Gasoline is extremely flammable and will ignite if
spilled on a hot engine or muffler. Never smoke
or expose the fuel to an open flame or spark
while refueling your vehicle. Always refuel your
vehicle in a safe place free of any ignition source.
14. NEVER run the vehicle in an enclosed area. The
exhaust gases from the engine contain CARBON
MONOXIDE which can be fatal if breathed in high
concentrations for an extended time.
15. HOT! The engine and exhaust system on
your vehicle become very hot during normal
operation. Touching these hot surfaces can
cause severe burns. Always assume that your
unit’s engine and exhaust system are HOT
unless you know that they are not.
Page 6
Additional safety tips:
• Participate in an approved ATV safety education training program
• Always provide responsible adult supervision for ATV operators younger than 18 years of age
• Don't let youngsters ride full-sized ATV's
• Follow all safety recommendations of the ATV manufacturer
• Operate ATVs only during daylight
• Wear a helmet with face protection at all times
• Operate only four-wheeled ATVs
• Provide a drug and alcohol free environment
• Always use the buddy system
• Avoid riding in areas where contact with automobiles might be possible
• Drive ATVs on surfaces as recommended by the manufacturer
• Travel at speeds conducive to conditions and operator abilities
• Check on the conditions of the trails you will be traveling
• Know and understand local and state laws governing the use of ATVs
• Permit only one operator per ATV
• Insist on a "perfect fit" between the ATV and the physical, mental, and emotional maturity of the operator
• Use antenna flags and wear bright clothing to increase conspicuity.
• Use maps and compass if you are riding in an unfamiliar area.
• Make a mental note of landmarks; you may need them if you are stranded.
• If you are lost at night, do not move around. You will waste valuable fuel that you can use to ride safety in
the daylight.
• Carry a first-aid pack with you.
• Carry some snacks and a water supply with you.
• Carry equipment to handle medical and mechanical emergencies.
• Your vehicle field repair kit should include the following items;
o the manufacturer's tool kit
o wire, tape, elastic cords,
o possibly locking pliers
o and a tow rope.
• Pre-Ride Inspection - Inspecting the condition of your ATV before each ride is very important to minimize
the chance of injury and maximize the enjoyment of your ride. It also helps ensures long term
performance of your ATV. Follow the owner’s manual guide to inspection and maintenance of your ATV.
A well maintained ATV will give you years of enjoyment.
• Watch out for thin ice which may be camouflaged by snow.
• Remember, you can ride further in one hour than you can walk in an entire day.
Age Recommendations by model size
ATV Model Size ETON Models Minimum Age Weight Capacity
RXL-40E
Under 70cc
RXL-50M
6 years and older 70 Lbs
RXL-70
70 - 90cc
RXL-90
RXL-90R
12 years and older 250 Lbs
over 90cc CXL-150 16 years and older 250 Lbs
150 cc CXL-150 16 years and older 300 Lbs
Page 7
Vehicle Identification Numbers
Vehicle Identification Number (VIN)
is located at the front of the unit under
the front fender on a plate mounted
between the main frame rails.
is located on the left-hand side of the
Your VIN RFZ______________ Eng. No._______________
Controls, Switches & Feature Locations
Locations of controls and features
1. Fuel Tank filler and vent tube
2. Front brake lever (Parking Brake Lock)
3. Throttle lever
4. Rear brake lever
5. Engine stop switch
6. Head lamp switch
7. Horn button
8. Engine starter button
9. Manual Choke Lever
Engine serial number
engine on the crankcase housing.
Page 8
Control Features
Engine Stop Switch
The stop
The throttle lever is located on the right-hand
handle bar below the grip. To operate the throttle
switch is a red colored rocker switch located
on the left-hand handle bar.
To start and run the engine, this switch must
be placed in the on, “O”, position.
The vehicle is also equipped with a safety
brake switch which will prevent the engine
from starting until the parking brake is
engaged.
To stop your engine, place the switch to the
stop, “X”, position.
In the stop, “X”, position the ignition system is
grounded preventing the spark plug from
firing.
This switch can also be used as a safety or
emergency stop switch.
Manual choke lever (9)
All Viper models are equipped with a
manually operated carburetor choke system.
This choke is operated by the lever at the
bottom of the left hand control switch.
When first starting the engine,(cold start),
place the lever in the full left position, (Choke
closed or on) As the engine warms return the
lever to the full right position. (Choke open or
off).
lever, place your right thumb on the lever and
press forward to increase your speed. To
decrease your speed, reduce your pressure on
the lever and the spring tension will
automatically reduce your speed.
The travel of the throttle lever is controlled by the
throttle stop bolt.
As your operator gains more experience, you
can increase the throttle travel to allow for
additional speed to be obtained.
To increase the throttle’s travel, thus increasing
the maximum speed, turn the throttle stop bolt
counter clockwise. To decrease the throttle’s
travel, thus decreasing the maximum speed, turn
the throttle stop bolt clockwise.
The throttle cable should be adjusted so there is
2mm, (1/8”) free travel at the lever before the
throttle starts to open.
Throttle lever
Page 9
Front and Rear Brakes
This vehicle is equipped with dual front
mechanical drum brakes and a rear hydraulic
disc brake. (Viper 70 Viper 90 & Viper 90R)
(Viper 50M is equipped with rear hydraulic
disc brake only)
The front brakes are controlled by the long
brake lever on the right-handle bar.
The rear brake is controlled by the long lever
on the left-handle bar.
The rear brake is the primary stopping brake
on your vehicle. Using the rear brake to stop
your vehicle will prevent steering control loss.
Use your front and rear brakes in combination
to control your speed while descending a
grade. Use caution not to apply too much
pressure to your front brakes so that the
wheels lock up, stop turning, and causing a
loss of steering control. If the front wheels
lock up, and stop turning, lightly reduce the
pressure on the front brake lever until they
unlock and start to turn
.
Parking Brake
The front brake lever has a button located at
the pivot point to lock the brake in the, “O”, on
position. This should be engaged as a parking
brake whenever the vehicle is not in operation.
If your engine fails to start, ensure that the
engine stop switch is in the on, “O”, position and
that the parking brake is engaged.
Safety Tether Switch
The Viper 50M and Viper 70 models are
equipped with a safety tether switch. The switch
is located on the left hand side of the handlebars.
The switch cap must be fully engaged for the
vehicle to start and run.
The cap is tied to a tether that should be worn
around the rider wrist. In case of an emergency
a simple pull on the tether will disengage the
switch and stop the engine.
Remote Stop/Start Switch
This feature must be engaged in order to start
the engine. The brake lever has a safety
switch built in to prevent the engine from
starting while the brake is disengaged.
The Viper 50M come equipped with a remote
Stop/Start key ring switch. (This feature is an
optional kit for the Viper 70 & Viper 90. A remote
Stop Only kit is optional for the Viper 90R).
The remote switch has two buttons, a Stop
button which will stop the engine when pressed.
The effective range of the switch is 30 feet
unobstructed.
Page 10
Once the unit has been stopped with the
remote switch you must press the run button
in order for the unit to be restarted. This
action resets the remote receiver on the unit.
The unit may also be started remotely by
pressing both the Stop & Run buttons
together.
Safety Note: Always test the remote
switch before beginning a riding session. The
remote switch is operated by a battery which
should be replace one a year. You can obtain
a replacement battery at your local
department store.
Fuel Tank
The fuel tank fill cap is located on top of the
dirt or other debris to enter the tank when
refueling.
Replace the cap if damaged or if it will not seal
to the tank.
Tighten the cap snugly, being careful not to over
tighten. Over tightening the cap can cause
damage to the cap or seal.
The fuel tank capacity is 4.5 liters, 1.2 gal,
including a reserve of 0.8 liters, 0.2 gal.
Use unleaded automobile gasoline with an
octane level of 91 or higher.
NEVER REFUEL YOUR ATV when the
engine is HOT. Wait 30 minutes after turning
off the unit before refueling. Spilling fuel on a
HOT engine could cause a fire. Wipe up any fuel
spills before re-starting.
unit just ahead of the seat. The cap contains
a vent to prevent a vacuum from forming in
the tank as fuel is used. The vent tube must
be attached to the cap and inserted in the
vent tube holder hole while operating the unit.
The fuel cap vent and vent tube must be
clean and clear of obstructions for the unit to
operate normally. You can check the vent and
vent tube by blowing air through the tube. If
you can not blow through the vent tube and
cap you must clean the vent and tube or
replace them.
Every time you refuel your unit, check the
rubber seal inside the cap for cuts, tears and
dirt. Clean or replace the seal if it becomes
worn or torn. The seal must be in good
condition to insure a proper seal of the cap to
the tank to prevent fuel spills. DO NOT allow
Fuel Valve
The unit is equipped with a three way fuel valve
located on the left side of the unit just below the
seat.
The valve has three settings; “OFF”, “ON” and
“RES”. With the valve in the “OFF” position fuel
is held in the tank and is prevented from flowing
to the carburetor. The valve should be placed in
the “OFF” position whenever the unit is not being
operated. Place the valve in the “ON” position for
normal operation of the unit. This allows fuel to
flow to the carburetor for normal operating. The
“RES” position allows fuel to flow from the small
Page 11
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