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5

Fine-tuning the bike

Learning how to use the adjusters will take time
but you quickly appreciate them once you know
the tricks. Even the specialists sometimes need
a specialist!

With the adjusters you optimize the suspen-

sion for your riding style and the track you are
competing on.

The same basic guidelines go for both the front

fork and the rear shock absorber.

Too much compression damping will give you a

harsh ride as your bike “jumps“ along the track.

With too much rebound damping your bike will

have difficulties with several bumps in a row. The
suspension will not extend fast enough between
bumps, your bike will ride lower and lower and
eventually the suspension will bottom!

External adjusters

On the Öhlins front fork the adjusters are bleed
valves, completely separated from each other.

The compression bleed valve controls the flow

in the cartridge tube during the compression
stroke, the rebound bleed valve controls the flow
during the rebound stroke.

CAUTION!

Using too much force when closing the adjusters
will destroy important sealing surfaces.

Make sure that you have the correct springs and
the correct spring pre-load before making any
adjustments. And always start with the Öhlins rec-
ommended settings.

Compression stroke

Rebound stroke

Flow in compression valve

Flow in rebound valve

Flow in compression valve

Flow in rebound valve

NOTE!

Higher click numbers give less damping force.

When making adjustments, keep notes, make
adjustments one at a time…and in small steps.

The adjusters should normally not be adjusted

in steps of more than 2 clicks at a time and not
outside the usable click range.

When you think you have made an improvement,

go back to what you started with and double
check to be sure. Pay attention to changes in
conditions like tires, temperatures etc.

NOTE!

See Mounting Instructions for recommended
settings.

Both the adjusters have a normal right-hand
thread.
Click position zero (0) is when the adjusters are
turned clockwise to fully closed.
The adjustment range, from fully closed until
maximum open valve (anticlockwise), is 20 clicks.
In order not to click in the wrong direction; always
first close the adjuster, then dial-in the new setting.

Making adjustments

To make improvements using the adjusters, it is
important to understand the function of the front
fork and the shock absorber and through testing
learn how they effect the handling of your bike.

Содержание WR 450 F - 2-TRAC 2005

Страница 1: ...1 Owners Manual hlins enduro front fork Yamaha WR 450 F 2 TRAC 2005 Including Setting up your bike Fine tuning Service the fork General handling set up Technical info Spare parts...

Страница 2: ...ont fork or vehicle or injury to persons if the instructions for fitting and maintenance are not followed exactly Similarly the warranty will become null and void if the instructions are not adhered t...

Страница 3: ...number on the inside of the fork bottom Design hlins new upside down USD front fork is designed to combine the advantages of comfort able safe conventional forks and rigid light USD forks The result i...

Страница 4: ...Setting the spring pre load Measuring Pre load on the spring springs is very important because it affects the height of the motorcycle and theforkangle Consequently handlingcharacteristics canbechange...

Страница 5: ...ct springs and the correct spring pre load before making any adjustments And always start with the hlins rec ommended settings Compression stroke Rebound stroke Flow in compression valve Flow in rebou...

Страница 6: ...erent combinations of springs and oil levels air springs you can alter the characteristic of the fork and tailor it to suit different tracks and conditions CAUTION Theoillevelmustbethesameinbothfrontf...

Страница 7: ...eel and the springs and balls of the adjuster 2 Unscrew the top cap use a 17 mm wrench and tool 1860 01 or tool 1873 01 and a 1 2 socket wrench Put a box under the front wheel so that the springs are...

Страница 8: ...ue of 20 Nm CAUTION The piston shaft must bottom in the top cap before the lock nut is tightened Spring support Optional spacers Adjustment wheel Top cap Spring support Refit the adjustment wheel Tigh...

Страница 9: ...ength is 467 mm If the spring length is under 460 mm the spring must be changed Follow instruction 5 on previous page Adjust the compression and the rebound valves according to specification card Fit...

Страница 10: ...d of the outer leg A sleeve is fitted above the bushing to main tain the correct position 12 Use the special tool 1702 04 to remove the bushing Install the tool in the top of the inner steel leg Insta...

Страница 11: ...parts from the piston holder NOTE If the correct order is lost use the specification card as a guide Put them in the correct order on the bench Clean all parts thoroughly Inspect all parts for wear a...

Страница 12: ...separated by the sleeve on the inner steel leg 18 Apply some hlins red grease on the seals Again use tool 1799 04 flip it around to install the seal in the outer leg Install the circlip and the scrap...

Страница 13: ...motorcycle Tighten the upper triple clamp to 20 Nm and the lower triple clamp to 10 Nm Adjust the compression and the rebound valves according to the specification card 20 Install the damper rod assem...

Страница 14: ...8 41 4 1 N mm 2328 43 4 3 N mm 2328 45 4 5 N mm 2328 47 4 7 N mm Settings Compressing adj 16 clicks Rebound adj 14 clicks L 70 300 200 Oil level When delivered from factory 105 mm Adjustment range 80...

Страница 15: ...7 N mm Optional 1 6 02425 03 2 Fork leg outer 1 7 02409 01 2 Guide Sleeve 1 8 02427 02 4 Bushing 1 9 02431 01 2 Sleeve 1 10 02332 05 2 Sticker 1 11 02412 01 2 Washer 1 12 02410 02 2 Seal 1 13 02015 0...

Страница 16: ...6 00884 01 4 Ball 2 7 00833 01 4 Spring 2 8 01050 01 2 Screw 2 9 00338 59 2 O ring 2 10 02397 48 2 End cap bump rubber 48mm 2 11 00438 61 2 O ring 2 12 02366 13 2 Adjustment rod 2 13 02402 01 2 Nut M1...

Страница 17: ...6 1 leg Shims 00184 14 1 leg Shims 3 32 00641 04 1 leg Washer 3 33 00153 01 4 Washer 3 34 00430 05 2 Nut M8 3 35 01473 02 2 Circlip 3 36 00338 53 2 O ring 3 37 01242 01 2 Adjustment needle 3 38 00884...

Страница 18: ...irst in a series of bumps but feels hard after a few more bumps Frontal grip insufficient in rough and bumpy turns Too much rebound damping Decrease the rebound damping Front end rebound too fast afte...

Страница 19: ...iction or leakage After every race Clean externally and spray with an all purpose oil after washing with detergent Check externally for damage Put a little hlins red grease 146 01 on the steel tubes a...

Страница 20: ...20 07295 23 Issued 05 01 28 Teknisk Illustration 1500 ex hlins Racing AB Box 722 S 194 27 Upplands V sby Sweden Phone 46 8 590 025 00 Fax 46 8 590 025 80 Your hlins dealer More info www ohlins com...

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