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PERIODIC MAINTENANCE AND ADJUSTMENT

7-10

7

NOTICE

ECA10452

In order to prevent clutch slip-
page (since the transmission oil
also lubricates the clutch), do
not mix any chemical additives.
Do not use oils with a diesel
specification of “CD” or oils of a
higher quality than specified. In
addition, do not use oils labeled
“ENERGY CONSERVING II” or
higher.

Make sure that no foreign mate-
rial enters the transmission.

7. Start the engine, and then let it idle

for several minutes while checking
the transmission for oil leakage. If
oil is leaking, immediately turn the
engine off and check for the cause.

EAU20070

Coolant 

The coolant level should be checked
before each ride. In addition, the cool-
ant must be changed at the intervals
specified in the periodic maintenance
and lubrication chart.

EAUM1293

To check the coolant level

1. Place the vehicle on a level sur-

face and hold it in an upright posi-
tion.

2. Remove the radiator cap and

check the coolant level in the radi-
ator. 

WARNING! Never attempt

to remove the radiator cap when
the engine is hot.

 [EWA10381]

1. “CD” specification
2. “ENERGY CONSERVING II”

1

2

1. Radiator cap

U5PA17E0.book  Page 10  Thursday, June 12, 2008  6:51 PM

Summary of Contents for YZ85Y

Page 1: ...DIC183 5PA 28199 17 YZ85Y OWNER S MANUAL Read this manual carefully before operating this vehicle LIT 11626 22 52...

Page 2: ...EAU10042 Read this manual carefully before operating this vehicle This manual should stay with this vehicle if it is sold U5PA17E0 book Page 1 Thursday June 12 2008 6 51 PM...

Page 3: ...a dealer WARNING EWA14461 Please read this manual the TIPS AND PRACTICE GUIDE FOR THE OFF HIGHWAY MOTORCYCLIST and the PARENTS YOUNGSTERS AND OFF HIGHWAY MOTORCYCLES booklets carefully and completely...

Page 4: ...when new or available from your Yamaha dealer Children differ in skills physical abilities and judgment Some children may not be able to operate a motorcycle safely Parents should su pervise their chi...

Page 5: ...y all safety messages that follow this symbol 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 indicate...

Page 6: ...tor Corporation U S A 1st edition June 2008 All rights reserved Any reprinting or unauthorized use without the written permission of Yamaha Motor Corporation U S A is expressly prohibited Printed in J...

Page 7: ...7 8 Transmission oil 7 9 Coolant 7 10 Cleaning the air filter element 7 12 Adjusting the carburetor 7 14 Adjusting the engine idling speed 7 14 Adjusting the throttle cable free play 7 14 Tires 7 15...

Page 8: ...E 8 1 Matte color caution 8 1 Care 8 1 Storage 8 3 SPECIFICATIONS 9 1 CONSUMER INFORMATION 10 1 Identification numbers 10 1 YAMAHA MOTOR CORPORATION U S A YZ WR MOTORCYCLE LIMITED WARRANTY 10 2 U5PA17...

Page 9: ...vehicle They contain important information for safe and proper operation of your vehicle Never remove any labels from your vehicle If a label becomes difficult to read or comes off a replacement labe...

Page 10: ...increase your risk of losing control if you carry a passenger NEVER OPERATE THIS VEHICLE ON PUBLIC ROADS You can collide with another vehicle if you operate this vehicle on a public road ALWAYS WEAR...

Page 11: ...ly therefore it is illegal to operate it on public streets roads or highways even a dirt or gravel one Off road use on public lands may be illegal Please check local regulations before riding This mot...

Page 12: ...ves etc is effective in preventing or reducing abrasions or lacerations Never wear loose fitting clothes otherwise they could catch on the control levers footrests or wheels and cause injury or an acc...

Page 13: ...design or operation characteristics can put you and others at greater risk of serious injury or death You are responsible for injuries related to changes in the vehicle Keep the following guidelines...

Page 14: ...ims that came with your motorcycle were designed to match the performance capabilities and to provide the best combination of handling brak ing and comfort Other tires rims siz es and combinations may...

Page 15: ...uel cock page 4 5 3 Shock absorber assembly spring preload adjusting nut page 4 9 4 Air filter element page 7 12 5 Seat page 4 7 6 Shift pedal page 4 1 7 Throttle stop screw page 7 14 8 Starter choke...

Page 16: ...crew page 4 7 4 Bleed screw page 4 9 5 Front fork compression damping force adjusting screw page 4 7 6 Spark plug cap page 7 8 7 Transmission oil filler cap page 7 9 8 Coolant drain bolt page 7 11 9 B...

Page 17: ...3 EAU10430 Controls and instruments 1 Clutch lever page 4 1 2 Engine stop button page 4 1 3 Brake lever page 4 2 4 Throttle grip page 7 14 5 Fuel tank cap page 4 3 U5PA17E0 book Page 3 Thursday June...

Page 18: ...engage the clutch pull the lever toward the handle bar grip To engage the clutch release the lever The lever should be pulled rapidly and released slowly for smooth clutch operation EAU12870 Shift ped...

Page 19: ...away from the handlebar grip turn the adjusting bolt in direction a to increase the distance and in direc tion b to decrease it 3 Tighten the locknut EAU12941 Brake pedal The brake pedal is on the rig...

Page 20: ...fuel tank with a fresh mix just be fore riding Do not use premixed fuel that is more than a few hours old Mixing gasoline and 2 stroke engine oil Pour 2 stroke engine oil into a clean container and t...

Page 21: ...ow these instructions 1 Before refueling turn off the en gine and be sure that no one is sit ting on the vehicle Never refuel while smoking or while in the vi cinity of sparks open flames or other sou...

Page 22: ...t blocked and clean it if necessary TIP If the fuel tank breather hose falls out reinstall it on the fuel tank cap with the arrow mark on the one way valve point ed downward as shown EAU41280 Fuel coc...

Page 23: ...rection b to turn off the starter choke EAU13650 Kickstarter To start the engine fold out the kick starter lever move it down lightly with your foot until the gears engage and then push it down smooth...

Page 24: ...properly se cured before riding EAU42051 Adjusting the front fork WARNING EWA10180 Always adjust both fork legs equal ly otherwise poor handling and loss of stability may result This front fork is eq...

Page 25: ...cap TIP Although the total number of clicks of a damping force adjusting mechanism may not exactly match the above spec ifications due to small differences in production the actual number of clicks a...

Page 26: ...the front fork there should be no weight on the front end of the vehicle 2 Remove the bleed screws and al low all of the air to escape from each fork leg 3 Install the bleed screws EAU42062 Adjusting...

Page 27: ...NOTICE Always tighten the locknut against the adjust ing nut and then tighten the locknut to the specified torque ECA10121 Rebound damping force To increase the rebound damping force and thereby hard...

Page 28: ...itrogen gas Read and understand the fol lowing information before handling the shock absorber assembly Do not tamper with or attempt to open the cylinder assembly Do not subject the shock ab sorber as...

Page 29: ...stand TIP Make sure that the sidestand is proper ly secured when the motorcycle is be ing supported or is being transported WARNING EWA14601 Never apply force on the motor cycle while it is on the sid...

Page 30: ...in the Owner s Manual WARNING EWA11151 Failure to inspect or maintain the vehicle properly increases the possibility of an accident or equipment damage Do not operate the vehicle if you find any prob...

Page 31: ...r Replace if necessary Check fluid level in reservoir If necessary add recommended brake fluid to specified level Check hydraulic system for leakage 7 19 7 19 Rear brake Check operation If soft or spo...

Page 32: ...has no excessive play 7 26 Front fork and rear shock ab sorber assembly Check that they operate smoothly and there is no oil leakage 4 7 4 9 4 9 7 25 Chassis fasteners Make sure that all nuts bolts an...

Page 33: ...See page 4 6 4 Start the engine by pushing the kickstarter lever down NOTICE For maximum engine life al ways warm the engine up before starting off Never accelerate hard when the engine is cold ECA11...

Page 34: ...train which are not designed to withstand the shock of forced shifting EAU16690 To start out and accelerate 1 Pull the clutch lever to disengage the clutch 2 Shift the transmission into first gear 3 O...

Page 35: ...full throttle operation should be avoided Stop the engine and check the spark plug again 6 Allow the engine to cool remove the cylinder head and cylinder and inspect the piston and cylinder Remove an...

Page 36: ...vehi cle EAU17191 Parking When parking stop the engine and then turn the fuel cock lever to OFF WARNING EWA10311 Since the engine and exhaust system can become very hot park in a place where pedestri...

Page 37: ...maintenance in tervals may need to be shortened WARNING EWA10321 Failure to properly maintain the ve hicle or performing maintenance ac tivities incorrectly may increase your risk of injury or death...

Page 38: ...tervals starting from Every race Items marked with an asterisk should be performed by a Yamaha dealer as they require special tools data and technical skills NO ITEM ROUTINE After break in Every race...

Page 39: ...ust Replace 7 Transmission Change the transmission oil Check transmission for damage Replace bearings 8 Shift forks guide bars shift cam Replace if necessary Check all parts for wear and damage 9 Roto...

Page 40: ...ondition Adjust and thoroughly lubricate chain with Yamaha chain and cable lube or equivalent Replace 16 Cooling system Check coolant level and for leakage Check hoses for cracks or damage Check radia...

Page 41: ...id Every year 22 Front fork Replace oil seals Replace fork oil Clean dust seal and lubricate with lithium soap based grease Adjust if necessary Check operation and for oil leakage NO ITEM ROUTINE Afte...

Page 42: ...ring head Check operation free play and tighten if necessary Clean and lubricate with lithium soap based grease Replace bearings 27 Tires and wheels Check tire air pressure wheel runout spokes for loo...

Page 43: ...7 Every two years replace the internal components of the brake master cylinders and calipers and change the brake fluid Replace the brake hoses every four years and if cracked or damaged U5PA17E0 boo...

Page 44: ...ck that the porcelain insulator around the center electrode of the spark plug is a medium to light tan the ideal color when the vehicle is ridden normally TIP If the spark plug shows a distinctly dif...

Page 45: ...must be changed at the intervals specified in the periodic maintenance and lubrication chart 1 Start the engine warm it up for several minutes and then turn it off 2 Place the motorcycle on a level su...

Page 46: ...ing the transmission for oil leakage If oil is leaking immediately turn the engine off and check for the cause EAU20070 Coolant The coolant level should be checked before each ride In addition the coo...

Page 47: ...sur face and let the engine cool if nec essary 2 Place a container under the engine to collect the used coolant 3 Remove the coolant drain bolt and then the radiator cap to drain the cooling system WA...

Page 48: ...at the intervals specified in the periodic maintenance and lubrica tion chart Clean or if necessary re place the air filter element more frequently if you are riding in unusually wet or dusty areas 1...

Page 49: ...ith the projection facing upward and then install the washer and wing bolt NOTICE Make sure that the air filter ele ment is properly seated in the air filter case The engine should never be operated w...

Page 50: ...0 Adjusting the engine idling speed The engine idling speed must be ad justed when necessary 1 Start the engine and thoroughly warm it up 2 Turn the throttle stop screw until the engine runs at the lo...

Page 51: ...y cause se vere injury or death from loss of control The tire air pressure must be checked and adjusted on cold tires i e when the temperature of the tires equals the ambient temperature The tire air...

Page 52: ...ead to an accident After extensive tests only the tires list ed below have been approved for this model by Yamaha Motor Co Ltd WARNING EWA14390 Have a Yamaha dealer replace excessively worn tires Oper...

Page 53: ...lever free play The clutch lever free play should mea sure 10 0 15 0 mm 0 39 0 59 in as shown Periodically check the clutch le ver free play and if necessary adjust it as follows 1 Loosen the locknut...

Page 54: ...air in the hydraulic system If there is air in the hydraulic system have a Yamaha dealer bleed the system be fore operating the vehicle Air in the hydraulic system will diminish the braking performan...

Page 55: ...almost touches the brake disc have a Yamaha dealer replace the brake pads as a set EAU46290 Rear brake pads Each rear brake pad is provided with wear indicator grooves which allow you to check the br...

Page 56: ...ater does not en ter the brake fluid reservoir when refilling Water will significantly lower the boiling point of the fluid and may result in vapor lock Brake fluid may deteriorate paint ed surfaces o...

Page 57: ...de of the swingarm 2 To tighten the drive chain turn the drive chain slack adjusting bolt on each side of the swingarm in direc tion a To loosen the drive chain turn the adjusting bolt on each side of...

Page 58: ...lubricated after washing the motorcycle and riding in the rain 1 Remove all dirt and mud from the drive chain with a brush or cloth TIP For a thorough cleaning have a Yamaha dealer remove the drive ch...

Page 59: ...Replace damaged cables as soon as possi ble to prevent unsafe conditions EWA10711 EAU23111 Checking and lubricating the throttle grip and cable The operation of the throttle grip should be checked be...

Page 60: ...ecessary EAUM1650 Lubricating the swingarm piv ots The swingarm pivots must be lubricat ed at the intervals specified in the peri odic maintenance and lubrication chart Recommended lubricants Brake le...

Page 61: ...heck the inner tubes for scratches damage and excessive oil leakage To check the operation 1 Place the vehicle on a level sur face and hold it in an upright posi tion WARNING To avoid injury securely...

Page 62: ...rica tion chart If there is play in the wheel hub or if the wheel does not turn smoothly have a Yamaha dealer check the wheel bearings EAU24350 Supporting the motorcycle Since this model is not equipp...

Page 63: ...wheel off the ground according to the procedure on page 7 26 3 Remove the axle nut and washer 4 Pull the wheel axle out and then remove the wheel EAU41420 To install the front wheel 1 Lift the wheel u...

Page 64: ...the drive chain is difficult to re move remove the wheel axle first and then lift the wheel upward enough to remove the drive chain from the rear sprocket The drive chain does not need to be disassemb...

Page 65: ...ry trouble may occur dur ing operation Any problem in the fuel compression or ignition systems for example can cause poor starting and loss of power The following troubleshooting charts represent quic...

Page 66: ...IODIC MAINTENANCE AND ADJUSTMENT 7 30 7 heaters or furnaces Gasoline or gasoline vapors can ignite or ex plode causing severe injury or property damage U5PA17E0 book Page 30 Thursday June 12 2008 6 51...

Page 67: ...ssion Check the ignition Have a Yamaha dealer check the vehicle Remove the spark plug and check the electrodes 3 Ignition Wet Dry Wipe off with a dry cloth and correct the spark plug gap or replace th...

Page 68: ...s stopped press down on the cap while turning it counterclockwise and then remove the cap TIP If coolant is not available tap water can be temporarily used instead provided that it is changed to the r...

Page 69: ...uffler outlet with a plastic bag after the engine has cooled down 2 Make sure that all caps and covers as well as all electrical couplers and connectors including the spark plug cap are tightly in sta...

Page 70: ...s covered with a wet cloth for a few minutes before cleaning After riding in the rain or near the sea Since sea salt is extremely corrosive carry out the following steps after each ride in the rain or...

Page 71: ...ellars stables because of the presence of ammonia and areas where strong chemi cals are stored Long term Before storing your motorcycle for sev eral months 1 Follow all the instructions in the Care se...

Page 72: ...correct the tire air pressure and then lift the motorcycle so that both of its wheels are off the ground Alterna tively turn the wheels a little every month in order to prevent the tires from becomin...

Page 73: ...es 0 54 L 0 57 US qt 0 48 Imp qt Air filter Air filter element Wet element Fuel Recommended fuel Premium unleaded gasoline only Fuel tank capacity 5 0 L 1 32 US gal 1 10 Imp gal Carburetor Manufacture...

Page 74: ...e 14x1 60 Front brake Type Single disc brake Operation Right hand operation Recommended fluid DOT 4 Rear brake Type Single disc brake Operation Right foot operation Recommended fluid DOT 4 Front suspe...

Page 75: ...e identification number is stamped into the steering head pipe Record this number in the space pro vided TIP The vehicle identification number is used to identify your motorcycle and may be used to re...

Page 76: ...CONSUMER INFORMATION 10 2 10 EAU42120 YAMAHA MOTOR CORPORATION U S A YZ WR MOTORCYCLE LIMITED WARRANTY U5PA17E0 book Page 2 Thursday June 12 2008 6 51 PM...

Page 77: ...CONSUMER INFORMATION 10 3 10 U5PA17E0 book Page 3 Thursday June 12 2008 6 51 PM...

Page 78: ...tch 4 1 I Identification numbers 10 1 K Kickstarter 4 6 L Labels location 1 1 M Matte color caution 8 1 Model label 10 1 P Parking 6 4 Part locations 3 1 Periodic maintenance and lubrication chart 7 2...

Page 79: ...U5PA17E0 book Page 2 Thursday June 12 2008 6 51 PM...

Page 80: ...PRINTED IN JAPAN 2008 07 0 7 1 CR E PRINTED ON RECYCLED PAPER YAMAHA MOTOR CO LTD DIC183...

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