Yamaha YFZ 50 2020 User manual

DIC183
BW4-F8199-14LIT-11626-34-07
This ATV should not be ridden by anyone under 6 years of age.
WARNING
YFZ05YYXM
OWNER’S MANUAL
READ THIS MANUAL CAREFULLY!
It contains important safety information.

EBU37021
Operating, servicing and
maintaining a passenger vehicle or off-road vehicle can
expose you to chemicals including engine exhaust,
carbon monoxide, phthalates, and lead, which are
known to the State of California to cause cancer and
birth defects or other reproductive harm. To minimize
exposure, avoid breathing exhaust, do not idle the
engine except as necessary, service your vehicle in a
well-ventilated area and wear gloves or wash your
hands frequently when servicing your vehicle. For more
information go to
www.P65Warnings.ca.gov/passenger-vehicle
Read this manual carefully before operating this vehicle. This manual should stay with this ve-
hicle if it is sold.
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INTRODUCTION
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Congratulations on your purchase of the Yamaha YFZ05YYXM. This ATV represents the result of many
years of Yamaha experience in the production of fine sporting, touring, and pacesetting racing machines.
With the purchase of this Yamaha, you can now appreciate the high degree of craftsmanship and reliability
that have made Yamaha a leader in these fields.
This manual will provide you with a good basic understanding of the features and operation of this ATV.
This manual includes important safety information. It provides information about special techni-
ques and skills necessary to ride the ATV. It also includes basic maintenance and inspection proce-
dures. If you have any questions regarding the operation or maintenance of your ATV, please consult a
Yamaha dealer.
AN IMPORTANT SAFETY MESSAGE:
Read this manual together with TIPS FOR THE ATV RIDER carefully and completely before operating
your ATV. Make sure you understand all instructions.
Pay close attention to the warning and notice labels on the ATV.
Never operate an ATV without proper training or instruction. Free training is available to anyone who
buys a new ATV. Call 1-800-887-2887 for more information.
This ATV should not be operated by a child under 6 years of age.
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AN IMPORTANT NOTE TO PARENTS:
This ATV is not a toy. Before you let your child ride this ATV, you should understand the instructions and
warnings in this Owner’s Manual. Then be sure your child understands and will follow them. Children differ
in skills, physical abilities and judgment. Some children may not be able to operate an ATV safely. Parents
should supervise their child’s use of the ATV at all times. Parents should permit continued use only if they
determine that the child has the ability to operate the ATV safely.
Your ATV was delivered with an adjustable speed limiter. Yamaha recommends that all beginners start off
to limit the amount of speed available while they learn. The adjusting screw may be gradually turned out
as the beginner becomes more familiar with operating the ATV. Parents should decide when to adjust the
ATV for more power as their youngster’s riding skills improve. Once the ATV rider can operate with skill at
the top speed permitted by adjusting the vehicle speed limiter alone, the engine speed limiter plate can be
removed. Since removal of this limiter will result in a significant increase in power, turn the vehicle speed
limiter adjusting screw completely back in again; adjust it out in stages as done previously.
If your child is a beginner or is inexperienced, he or she should take a training course. See the previous
page for information about the free training available to purchasers of new ATVs.
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IMPORTANT MANUAL INFORMATION
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FAILURE TO FOLLOW THE WARNINGS CONTAINED IN THIS MANUAL CAN RESULT IN SERIOUS IN-
JURY OR DEATH.
Particularly important information is distinguished in this manual by the following notations:
TIP
Product and specifications are subject to change without notice.
The ATV you have purchased may differ slightly from the figures shown in this manual.
This is the safety alert symbol. It is used to alert you to potential per-
sonal injury hazards. Obey all safety messages that follow this sym-
bol to avoid possible injury or death.
A WARNING indicates a hazardous situation which, if not avoided,
could result in death or serious injury.
A NOTICE indicates special precautions that must be taken to avoid
damage to the vehicle or other property.
A TIP provides key information to make procedures easier or clearer.
WARNING
NOTICE
TIP
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IMPORTANT NOTICE
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This ATV is designed and manufactured for off-road use only. It is illegal and unsafe to operate this ATV
on any public street, road or highway.
This ATV complies with all applicable off-road noise level and spark arrester laws and regulations in effect
at the time of manufacture.
Please check your local riding laws and regulations before operating this ATV.
EBU34380
YFZ05YYXM
OWNER’S MANUAL
©2021 by Yamaha Motor Corporation, U.S.A.
1st edition, December 2019
All rights reserved.
Any reprinting or unauthorized use
without the written permission of
Yamaha Motor Corporation, U.S.A.
is expressly prohibited.
Printed in Taiwan.
P/N LIT-11626-34-07
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WARNING
EWB00012
Indicates a hazardous situation which, if not
avoided, could result in death or serious injury.
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TABLE OF CONTENTS
VEHICLE IDENTIFICATION ............................1-1
Identification numbers ................................1-1
LOCATION OF THE WARNING AND
SPECIFICATION LABELS ..............................2-1
SAFETY INFORMATION ................................3-1
DESCRIPTION................................................ 4-1
Left view......................................................4-1
Right view....................................................4-1
Controls and instruments............................4-2
INSTRUMENT AND CONTROL
FUNCTIONS................................................... 5-1
Main switch ................................................. 5-1
Handlebar switches ....................................5-2
Engine stop switch with lanyard................. 5-2
Throttle lever............................................... 5-3
Speed limiter............................................... 5-4
Front brake lever......................................... 5-6
Rear brake lever ......................................... 5-6
Parking brake ............................................. 5-6
Kickstarter .................................................. 5-7
Fuel tank cap .............................................. 5-9
Fuel ........................................................... 5-10
Fuel cock .................................................. 5-11
Starter (choke) ......................................... 5-12
Seat .......................................................... 5-13
Rear shock absorber ................................ 5-14
PRE-OPERATION CHECKS .......................... 6-1
Fuel ............................................................. 6-3
Engine oil .................................................... 6-3
Transmission oil.......................................... 6-3
Front and rear brakes ................................. 6-3
Throttle lever............................................... 6-3
Drive chain.................................................. 6-3
Tires ............................................................ 6-3
Chassis fasteners ....................................... 6-6
Instruments and switches........................... 6-6
OPERATION .................................................. 7-1
Starting a cold engine................................. 7-1
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Starting a warm engine ...............................7-3
Engine break-in ........................................... 7-3
Parking ........................................................7-3
Parking on a slope ......................................7-4
Accessories and loading .............................7-5
RIDING YOUR ATV ........................................ 8-1
GETTING TO KNOW YOUR ATV ................8-2
RIDE WITH CARE AND GOOD
JUDGMENT ..............................................8-2
BE CAREFUL WHERE YOU RIDE...............8-9
TURNING YOUR ATV................................8-12
CLIMBING UPHILL ...................................8-14
RIDING DOWNHILL ..................................8-17
CROSSING A SLOPE................................8-18
CROSSING THROUGH SHALLOW
WATER....................................................8-19
RIDING OVER ROUGH TERRAIN .............8-20
SLIDING AND SKIDDING..........................8-21
WHAT TO DO IF........................................8-22
PERIODIC MAINTENANCE AND
ADJUSTMENT................................................9-1
Owner’s Manual and tool kit .......................9-2
Periodic maintenance chart: Emission
control system ..........................................9-3
Periodic maintenance chart: General
maintenance and lubrication .................... 9-5
Removing and installing the panel.............. 9-9
Checking the spark plug............................. 9-9
Engine oil .................................................. 9-11
Why Yamalube.......................................... 9-14
Transmission oil........................................ 9-15
Cleaning the air filter element ................... 9-16
Cleaning the spark arrester ...................... 9-19
Adjusting the carburetor ........................... 9-20
Adjusting the engine idling speed ............ 9-20
Adjusting the throttle lever free play......... 9-22
Valve clearance......................................... 9-22
Brakes....................................................... 9-22
Checking the front and rear brake
shoes ...................................................... 9-23
Adjusting the front brake lever free play... 9-24
Adjusting the rear brake lever free play.... 9-26
Drive chain slack....................................... 9-26
Cleaning and lubricating the drive
chain ....................................................... 9-29
Checking and lubricating the cables ........ 9-29
Checking and lubricating the front and
rear brake levers ..................................... 9-30
Checking the wheel hub bearings ............ 9-30
Lubricating the front arm pivots ............... 9-31
Lubricating the front knuckle pivots ......... 9-31
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Lubricating the steering shaft ................... 9-32
Battery.......................................................9-32
Replacing the fuse ....................................9-35
Removing a wheel..................................... 9-36
Installing a wheel.......................................9-36
Troubleshooting ........................................9-37
Troubleshooting chart...............................9-38
CLEANING AND STORAGE .........................10-1
Cleaning ....................................................10-1
Storage......................................................10-2
SPECIFICATIONS ........................................11-1
CONSUMER INFORMATION ....................... 12-1
Vehicle Emission Control Information
label.........................................................12-1
Noise regulation ........................................12-2
Maintenance record ..................................12-3
YAMAHA MOTOR CORPORATION,
U.S.A. 2020 AND LATER MODEL ATV
LIMITED WARRANTY .............................12-4
YAMAHA EXTENDED SERVICE (Y.E.S.) ... 12-6
INDEX...........................................................13-1
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1-1
1
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VEHICLE IDENTIFICATION
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Identification numbers
Record the vehicle identification number, model
label information and key identification number in
the spaces provided below.
VEHICLE IDENTIFICATION NUMBER:
MODEL LABEL INFORMATION:
KEY IDENTIFICATION NUMBER:
EBU26032
Vehicle identification number
The vehicle identification number is stamped into
the frame. This 17-digit number is used to identify
your individual ATV.
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Model label
The model label is affixed at the location shown.
1. Vehicle identification number
1
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