Ohlins YA574 Mounting Instruction

Brand: Ohlins

Model: YA574

Category: Car kits

Type: Mounting Instruction

Öhlins Racing AB, Box 722, S-194 27 Upplands Väsby, Sweden.

Phone +46 8 590 025 00. Fax +46 8 590 025 80.

www.ohlins.com

YA 574, issued 2006 01 27

Mounting Instructions

Öhlins shock absorber kit YA 574

for Yamaha YFZ 450 - front

written permission of Öhlins Racing AB is prohibited. Printed in Sweden.

Kit Contents

Before installing the shock absorber, please

check the contents of the kit. If anything is

missing, please contact your Öhlins dealer.

Before Installing

Öhlins Racing AB cannot be held responsible

for any damage to shock absorber or vehicle,

or injury to persons, if the instructions for ﬁ tting

and main tenance are not followed exactly.

Similarly, the warranty will become null and

void if the instructions are not adhered to.

Öhlins products are subject to continuous

improvement and development. Conse-

quently, although these instructions include

the most up-to-date information available

at the time of printing, there may be minor

differences between your shock absorber

and this manual. Please consult your Öhlins

dealer if you have any questions regarding

the contents of this manual.

Shock absorber 36PRXW YA 574 (1 pair)

Included and installed on the shock absorbers:

Stop washer 00115-01 (2)

Circlip SW 40 00131-01 (2)

Spring platform M44x1.5 00154-02 (4)

Support sleeve 00417-01 (2)

Circlip 36/1.5 00428-01 (4)

Sleeve M44x1.5/70 03281-01 (2)

Also included:

Spring clip for springs 46 00116-03 (2)

C-spanner twin 00710-01 (2)

Sticker “ÖHLINS” 00197-01 (2)

Sticker “Memo notes” 01180-01 (1)

Öhlins Owners manual ATV shocks

NOTE!

No springs included. See Spring recom-

mendations in this manual. Consult your

Öhlins dealer for advice.

WARNING!

1. Installing a shock absorber, that is not

approved by the vehicle manufacturer, may

affect the stability of your vehicle. Öhlins

Racing AB cannot be held responsible for

any personal injury or damage that may oc-

cur after ﬁ tting the shock absorber. Contact

an Öhlins dealer or other qualiﬁ ed person

for advice.

2. Please study and make certain that you fully

understand all the mounting instructions and

the owner’s manual before handling this shock

absorber kit. If you have any questions regard-

ing proper installation procedures, contact an

Öhlins dealer or other qualiﬁ ed person.

3. The vehicle service manual must be

referred to when installing the Öhlins shock

absorber

NOTE!

During storage and transportation, especially

at high ambient temperature, the oil and

grease used for assembling may run out in-

side the packing and damage the expanded

polystyrene packing material. This is not

unusual and is in no way detrimental to the

shock absorber.

Safety Signals

Important information concerning safety is

distinguished in this manual by the following

notations:

The Safety alert symbol means:

Attention! Your safety is involved.

WARNING!

Failure to follow these warning instruc-

tions could result in severe or fatal

injury to anyone working with, inspect-

ing or using the shock absorber, or to

bystanders.

CAUTION!

Caution indicates that special pre-

cautions must be taken to avoid damage

to the shock absorber.

NOTE!

Indicates information that is of importance

regarding mounting procedures.

Compression damping adjuster

Adjustments are made on top of the

reservoir.

Low speed adjuster: Slotted centre

screw.

High speed adjuster: Hexagon screw.

Rebound damping adjuster

Adjust by turning the adjuster wheel

above the end eye.

Spring pre-load adjuster

Adjust by moving the upper spring seat

circlip to another groove.

Short spring stroke adjuster

The total spring characteristics can be

adjusted by moving the ring nuts on the

ﬂ oating sleeve. The spring platform posi-

tion decides when the stroke for the short

spring is blocked. At this point, the total

spring stiffness will increase on compres-

sion stroke. Lock the spring platforms

against each other with the C-spanners.

Low speed

compression

adjustment

High speed

compression

adjustment

Adjustments

NOTE!

When delivered the Öhlins shock absorber

is dialed to recommended settings for the

speciﬁ c brand and make of the vehicle. If you

have changed the setting, reset according to

the following:

The adjusters have a normal right hand thread.

Turn clockwise to fully closed. Turn counter

clockwise to open and count the clicks until you

reach the recommended number.

CAUTION!

Do not use too much force, delicate sealing

surfaces can be damaged. Handtighten only.

Mounting Instructions

WARNING!

1. It is advisable to have an Öhlins dealer

or other qualiﬁ ed person install the shock

absorber.

2. Follow the instructions in the vehicle service

manual when changing the shock absorber.

3. When working on a raised vehicle, make

sure that it is securely supported to prevent

it from falling.

Step 1 - Installing the springs

NOTE!

Before installing the shock absorbers on

the vehicle you need to install the correct

springs. See spring recommendations in

this manual.

Circlip 00131-01

Washer 00115-01

Short spring

Spring platform

00154-02

Circlip 00428-01

Long spring

Spring clip

00116-03

Two springs

The shock absorbers have two springs work-

ing in series. When both springs are moving,

the total spring stiffness is lower than for

each spring separately, which provides

extra progressive and adjustable spring

characteristics.

Between the springs an adjustable slid-

ing platform adjusts the short spring stroke.

Altering the stroke is a very effective way

of adjusting the spring stiffness without

changing the springs.

Sleeve 03281-01

Groove no.1

Spring position 1

Remove the Circlips, Washer, Sleeve, Spring

platforms and Support sleeve.

Install the short spring, the long spring and

all the other parts according to the ﬁ gure. Set

spring positions 1 and 2 according to the ﬁ g-

ures below.

See Setup Data in this manual for the recom-

mended position of the Circlip 00131-01.

Circlip

00131-01

Spring position 2

See Setup Data in this manual for the recom-

mended position of the upper Spring platform

00154-02.

Spring platform

00154-02

General facts

Shock absorber length 450 mm

Stroke 133 mm

Recommended settings

Compression damping

Low speed 15 clicks

High speed 2 turns

Rebound Damping Adj 20 clicks

Recommended Free sag

Front 60 ± 5 mm

2½ ± ¼ “

Rear 30 ± 5 mm

1 ¼ ± ¼ “

Recommended Ride height

Front 80 ± 5 mm

3 ¼ ± ¼ “

Rear 105 ± 5 mm

4½ ± ¼ “

Spring positions

Spring position 1 10th groove

* Spring position 1 12th groove

Spring position 2 38 mm

Setup Data

Rider's weight

-arm:

ong travel Leager +

-arm:

ong travel SRF +

75kg/ 165 lbs Long spring 0480-15 Long spring 0480-16

Spring rate Prog. 22.5 - 29 N/mm Spring rate Prog. 25 - 33.5 N/mm

Short spring 4060-40 Short spring 4060-40

Spring rate 40 N/mm Spring rate 40 N/mm

85kg/ 187 lbs Long spring 0480-16 Long spring 0180-72

Spring rate Prog. 25 - 33.5 N/mm Spring rate 27.5 - 39 N/mm

Short spring 4060-40 Short spring 4060-40

Spring rate 40 N/mm Spring rate 40 N/mm

95kg/ 209 lbs Long spring 0180-72 Long spring

0180-23

Spring rate Prog. 27.5 - 39 N/mm Spring rate 31 N/mm

Short spring 4060-40 Short spring 4060-40

Spring rate 40 N/mm Spring rate 40 N/mm

Total spring preload: Total spring preload:

7 mm 5 mm

Spring recommendation

Support sleeve

00417-01

x mm

Use the

C-spanner

provided in

this kit!

Use

appropriate

tool!

Circlip 00428-01

3 4

Raise the front end of the vehicle so that the

original shock absorbers are in a neutral posi-

tion.

Remove the original shock absorbers.

Install the Öhlins shock absorbers in the same

positions as the original units. Fasten the upper

attachment ﬁ rst. The piggy back reservoirs

should be at the top and facing outwards.

Fasten the lower attachment. Raise or lower the

wheels slightly to make the attachment ﬁ t.

Tighten the attachment screws to the correct

torque. Consult your ATV Owners manual.

Check sag and ride height according to the Öh-

lins owners manual. See also Set-up data for this

speciﬁ c shock absorber kit on the next page.

NOTE!

Make sure that all screws are tightened to the

correct torque and that nothing fouls or re-

stricts movement of the shock absorber when

the suspension is being fully compressed or

extended.

Step 2 - Installing the Öhlins shock absorbers

Before installing the shock absorbers, make

sure the correct springs are installed.

WARNING!

1. It is advisable to have an Öhlins dealer or other

qualiﬁ ed person install the shock absorber.

2. Follow the instructions in the vehicle service

manual when changing the shock absorber.

3. When working on a raised vehicle, make sure that

it is securely supported to prevent it from falling.

Mounting Instructions

Front suspension

F1 ATV on a stand with the

suspension fully extended = ...............

F2 ATV on the ground without rider = ............

F3 ATV on the ground with rider = ............

Free sag F1 - F2 = .................

Ride height F1 - F3 = .................

On a stand Without rider With rider on

Check sag and ride height

Rear suspension

R1 Bike on a stand with the

suspension fully extended = ...............

R2 Bike on the ground without rider = ............

R3 Bike on the ground with rider = ............

Free sag R1 - R2 = ...............

Ride height R1 - R3 = ...............

Ohlins YA574 Mounting Instruction

Brand: Ohlins

Model: YA574

Category: Car kits

Type: Mounting Instruction

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Ohlins YA574 Mounting Instruction

Ohlins YA574 Mounting Instruction

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