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PERIODIC MAINTENANCE AND ADJUSTMENT

7-8

7

EAU19613

Checking the spark plug 

The spark plug is an important engine
component, which is easy to check.
Since heat and deposits will cause any
spark plug to slowly erode, the spark
plug should be removed and checked
in accordance with the periodic mainte-
nance and lubrication chart. In addition,
the condition of the spark plug can re-
veal the condition of the engine.

To remove the spark plug

1. Remove the spark plug cap.

2. Remove the spark plug as shown,

with a spark plug wrench available
at a Yamaha dealer.

To check the spark plug

1. Check 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-
ferent color, the engine could be oper-
ating improperly. Do not attempt to
diagnose such problems yourself. In-
stead, have a Yamaha dealer check
the vehicle.

2. Check the spark plug for electrode

erosion and excessive carbon or
other deposits, and replace it if
necessary.

3. Measure the spark plug gap with a

wire thickness gauge and, if nec-
essary, adjust the gap to specifica-
tion.

1. Spark plug cap

1. Spark plug wrench

Specified spark plug:

NGK/BR10EG

1. Spark plug gap

Spark plug gap:

0.5–0.6 mm (0.020–0.024 in)

U1SN81E0.book  Page 8  Tuesday, June 12, 2012  3:17 PM

Summary of Contents for YZ85(D)

Page 1: ...AIRE BEDIENUNGSANLEITUNG Il convient de lire attentivement ce manuel avant la pre mi re utilisation du v hicule Bitte lesen Sie diese Bedienungsanleitung sorgf ltig durch bevor Sie das Fahrzeug in Bet...

Page 2: ...PRINTED IN JAPAN 2012 06 0 3 1 CR E F G DIC183 PRINTED ON RECYCLED PAPER IMPRIM SUR PAPIER RECYCL AUF RECYCLINGPAPIER GEDRUCKT...

Page 3: ...Read this manual carefully before operating this vehicle OWNER S MANUAL YZ85 D YZ85LW D 1SN 28199 81 E0 U1SN81E0 book Page 1 Tuesday June 12 2012 3 17 PM...

Page 4: ...EAU46090 Read this manual carefully before operating this vehicle This manual should stay with this vehicle if it is sold U1SN81E0 book Page 1 Tuesday June 12 2012 3 17 PM...

Page 5: ...minor discrepancies between your motorcycle and this manual If there is any question concerning this manual please consult a Yamaha dealer WARNING EWA10031 Please read this manual carefully and comple...

Page 6: ...has the ability to operate the motorcycle safely Motorcycles are single track vehicles Their safe use and operation are dependent upon the use of proper riding techniques as well as the expertise of...

Page 7: ...ntial personal injury hazards Obey 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...

Page 8: ...S MANUAL 2012 by Yamaha Motor Co Ltd 1st edition May 2012 All rights reserved Any reprinting or unauthorized use without the written permission of Yamaha Motor Co Ltd is expressly prohibited Printed...

Page 9: ...ning the air filter element 7 12 Adjusting the carburetor 7 14 Adjusting the engine idling speed 7 14 Adjusting the throttle grip free play 7 15 Tires 7 15 Spoke wheels 7 17 Adjusting the clutch lever...

Page 10: ...TABLE OF CONTENTS Storage 8 3 SPECIFICATIONS 9 1 CONSUMER INFORMATION 10 1 Identification numbers 10 1 U1SN81E0 book Page 2 Tuesday June 12 2012 3 17 PM...

Page 11: ...ntain 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 label is available f...

Page 12: ...e respecte toutes les exigences du R glement sur le mat riel brouilleur du Canada WARNING BEFORE YOU OPERATE THIS VEHICLE READ THE OWNER S MANUAL AND ALL LABELS NEVER CARRY A PASSENGER You increase yo...

Page 13: ...TER UN CASQUE DE MOTOCYCLISTE APPROUVE des lunettes et des v tements de protection EXCLUSIVEMENT POUR L USAGE D UN CONDUCTEUR EXPERIMENTE 5PA 2118K 10 Cold tire normal pressure should be set as follow...

Page 14: ...LOCATION OF IMPORTANT LABELS 1 4 1 For Europe 1 2 3 U1SN81E0 book Page 4 Tuesday June 12 2012 3 17 PM...

Page 15: ...ANT LABELS 1 5 1 For Europe 5PG 2816R 00 100 kPa 1 00 kgf cm 15 psi 100 kPa 1 00 kgf cm 15 psi 4AA 22259 40 YAMAHA MOTOR CO LTD SHIZUOKA JAPAN YAMAHA 4GB 2155A 00 2 1 3 U1SN81E0 book Page 5 Tuesday Ju...

Page 16: ...from 6 years old Operation of this motorcycle by children under the age of 6 increase the risk of severe injury or death Never carry passengers Adult supervision required for children This unit conta...

Page 17: ...m psi Use unleaded gasoline only Measure the tire pressure when the tires are cold Adjust the tire pressure Improper tire pressure can cause loss of control Loss of control can result in severe injury...

Page 18: ...LOCATION OF IMPORTANT LABELS 1 8 1 For Oceania and South Africa 1 2 3 U1SN81E0 book Page 8 Tuesday June 12 2012 3 17 PM...

Page 19: ...er NEVER OPERATE THIS VEHICLE ON PUBLIC ROADS You can collide with another vehicle if you operate this vehicle on a public road ALWAYS WEAR AN APPROVED MOTORCYCLE HELMET eye protection and protective...

Page 20: ...ion Failure to inspect or maintain the vehicle properly increases the possibility of an accident or equipment damage See page 5 1 for a list of pre operation checks This motorcycle is designed for off...

Page 21: ...he use of a safety helmet is the single most critical factor in the preven tion or reduction of head injuries Always wear an approved helmet Wear a face shield or goggles Wind in your unprotected eyes...

Page 22: ...hazards to you or others Installing aftermarket prod ucts or having other modifications per formed to your vehicle that change any of the vehicle s design or operation characteristics can put you and...

Page 23: ...the motorcycle Check that the fuel cock if equipped is in the OFF position and that there are no fuel leaks Point the front wheel straight ahead on the trailer or in the truck bed and choke it in a ra...

Page 24: ...Fuel 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 25: ...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 26: ...U10430 Controls and instruments 1 2 3 4 5 1 Clutch lever page 4 1 2 Engine stop button page 4 1 3 Brake lever page 4 2 4 Throttle grip page 7 15 5 Fuel tank cap page 4 3 U1SN81E0 book Page 3 Tuesday J...

Page 27: ...handle bar grip To engage the clutch release the lever The lever should be pulled rapidly and released slowly for smooth clutch operation EAU12871 Shift pedal The shift pedal is located on the left s...

Page 28: ...e throttle grip turn the adjusting bolt in direction a to in crease the distance and in direc tion b to decrease it 4 Tighten the locknut 5 Slide the rubber cover to its origi nal position EAU12941 Br...

Page 29: ...e 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...

Page 30: ...hese 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 sources...

Page 31: ...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 32: ...irection 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 smoot...

Page 33: ...fork legs equal ly otherwise poor handling and loss of stability may result This front fork is equipped with rebound damping force adjusting screws and compression damping force adjusting screws NOTI...

Page 34: ...ctual number of clicks always represents the entire adjusting range To obtain a precise adjustment it would be advisable to check the num ber of clicks of each damping force ad justing mechanism and t...

Page 35: ...ach fork leg 3 Install the bleed screws 4 Lower the front wheel so that it is on the ground install the remov able sidestand and then rest the motorcycle on it EAU41333 Adjusting the shock absorber as...

Page 36: ...ified torque ECA10121 Rebound damping force To increase the rebound damping force and thereby harden the rebound damp ing turn the adjusting screw in direction a To decrease the rebound damping force...

Page 37: ...her high heat source This may cause the unit to ex plode due to excessive gas pressure Do not deform or damage the cylinder in any way Cylinder damage will result in poor damping performance Do not di...

Page 38: ...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 39: ...ollowing points ITEM CHECKS PAGE Fuel Check fuel level in fuel tank Always use a fresh mixture of gasoline and oil Check fuel line for leakage Check fuel tank breather hose for obstructions cracks or...

Page 40: ...nd lubricate cable and grip housing 7 15 7 24 Drive chain Check chain slack Adjust if necessary Check chain condition Lubricate if necessary 7 22 7 23 Wheels and tires Check for damage Check tire cond...

Page 41: ...and cables Check that the control cables move smoothly Check that the control cables are not caught when the handlebars are turned or when the front forks travel up and down Lubricate moving parts an...

Page 42: ...etely close the throttle See page 4 6 4 Start the engine by pushing the kickstarter lever down 5 When the engine is warm turn the starter choke off TIP The engine is warm when it responds quickly to t...

Page 43: ...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 44: ...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 45: ...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 46: ...roperly maintain the ve hicle or performing maintenance ac tivities incorrectly may increase your risk of injury or death during service or while using the vehicle If you are not familiar with vehicle...

Page 47: ...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 Every third race Every fifth race As re...

Page 48: ...just 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 Rot...

Page 49: ...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 50: ...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 51: ...e As required 26 Steering 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...

Page 52: ...7 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 U1SN81E0 bo...

Page 53: ...ark plug 1 Check 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 d...

Page 54: ...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 surface and hold it i...

Page 55: ...In addition the cool ant must be changed at the intervals specified in the periodic maintenance and lubrication chart EAUM1295 To check the coolant level 1 Place the vehicle on a level sur face and ho...

Page 56: ...oolant drain bolt and its gasket and then the radiator cap to drain the cooling system WARNING Never attempt to re move the radiator cap when the engine is hot EWA10381 4 After the coolant is complete...

Page 57: ...eaned or replaced 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...

Page 58: ...ter case with the projection facing upward and then install the wing bolt and its washer NOTICE Make sure that the air filter ele ment is properly seated in the air filter case The engine should never...

Page 59: ...e maintenance NOTICE ECA10550 The carburetor has been set and ex tensively tested at the Yamaha fac tory Changing these settings without sufficient technical knowl edge may result in poor perfor mance...

Page 60: ...cover to its original po sition EAU41822 Tires Tires are the only contact between the vehicle and the road Safety in all con ditions of riding depends on a relatively small area of road contact There...

Page 61: ...re place the tire immediately Tire information This motorcycle is equipped with spoke wheels and tube tires Tires age even if they have not been used or have only been used occasion ally Cracking of t...

Page 62: ...e the performance durabil ity and safe operation of your motorcy cle note the following points regarding the specified wheels The wheel rims should be checked for cracks bends warpage or oth er damage...

Page 63: ...skip steps 4 7 4 Fully turn the adjusting bolt in di rection a to loosen the clutch ca ble 5 Slide the rubber cover back further down the clutch cable and then loosen the locknut 6 To increase the cl...

Page 64: ...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 performance w...

Page 65: ...ave a Yamaha dealer replace the brake pads as a set EAU46291 Rear brake pads Each rear brake pad is provided with wear indicator grooves which allow you to check the brake pad wear with out having to...

Page 66: ...reaction Be careful that water does not enter the brake fluid reservoir when refilling Water will signifi cantly lower the boiling point of the fluid and may result in vapor lock NOTICE ECA17640 Brak...

Page 67: ...e on it TIP When checking and adjusting the drive chain slack there should be no weight on the motorcycle 2 Shift the transmission into the neu tral position 3 Measure the drive chain slack as shown 4...

Page 68: ...ervals specified in the periodic maintenance and lubrica tion chart otherwise it will quickly wear out especially when riding in dusty or wet areas Service the drive chain as follows NOTICE ECA10583 T...

Page 69: ...hecked before each ride In addi tion the cable should be lubricated by a Yamaha dealer at the intervals speci fied in the periodic maintenance chart The throttle cable is equipped with a rubber cover...

Page 70: ...bricating the rear suspen sion The pivoting points of the rear suspen sion must be lubricated by a Yamaha dealer at the intervals specified in the periodic maintenance and lubrication chart Recommende...

Page 71: ...ck 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 su...

Page 72: ...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 73: ...edure in the previous section Supporting the motorcycle 3 Remove the axle nut and washer 4 Pull the wheel axle out and then remove the wheel NOTICE Do not apply the brake after the wheel has been remo...

Page 74: ...o the procedure on page 7 27 3 Fully loosen the locknut and then loosen the drive chain slack ad justing bolt on each side of the swingarm 4 Remove the axle nut and washer 5 Push the wheel forward and...

Page 75: ...bracket by inserting the wheel axle from the right hand side TIP Make sure that the slot in the brake caliper bracket is fit over the retain er on the swingarm Make sure that there is enough space be...

Page 76: ...quire any repair take it to a Yamaha dealer whose skilled technicians have the necessary tools experience and know how to service the motorcycle properly Use only genuine Yamaha replace ment parts Imi...

Page 77: ...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 78: ...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 79: ...leaning 1 Cover the muffler 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 c...

Page 80: ...motorcycle with cold wa ter and a mild detergent after the engine has cooled down NOTICE Do not use warm water since it increases the corrosive action of the salt ECA10791 2 Apply a corrosion protecti...

Page 81: ...s where strong chemi cals are stored Long term Before storing your motorcycle for sev eral months 1 Follow all the instructions in the Care section of this chapter 2 For motorcycles equipped with a fu...

Page 82: ...l 6 Check and if necessary 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 prev...

Page 83: ...47 5 47 8 mm 1 87 1 88 in Compression ratio 8 20 1 Starting system Kickstarter Lubrication system Premix Engine oil Type YAMALUBE 2R Transmission oil Type YAMALUBE 4 10W 40 or SAE 10W 40 Oil change qu...

Page 84: ...gf cm 15 psi Front wheel Wheel type Spoke wheel Rim size YZ85 17x1 40 YZ85D 17x1 40 YZ85LW 19x1 40 YZ85LWD 19x1 40 Rear wheel Wheel type Spoke wheel Rim size YZ85 14x1 60 YZ85D 14x1 60 YZ85LW 16x1 85...

Page 85: ...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 86: ...cap 4 3 H Handlebar switch 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 a...

Page 87: ...U1SN81E0 book Page 2 Tuesday June 12 2012 3 17 PM...

Page 88: ...IVE GEAR NEVER USE ON PAVED ROADS NEVER CARRY PASSENGERS NEVER operate without proper training or instruction at speeds too fast for your skills or the conditions on public roads a collision can occur...

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