background image

I have grease/oil coming out of my brand new fork seals. 

This is not unusual at the beginning of the life of a fork. Clean off the stanchions and the seals and it will stop after a few rides. 

 

My fork has been sitting for a couple of weeks and some oil came out of the seal when I rode it the first time. 

BOS seals can let out a little bit of oil when they have been sitting and dried out. Wipe off any oil, and none more will come out 
when the seal is lubricated again. 

 

I have grease/oil coming out of my well-ridden fork seals.  

It’s time for a service! Contact your nearest BOS authorized service center for a full service. 

 

But I haven’t reached your recommended service interval yet. 

Our recommended service intervals cannot cover 100% of customer’s usage cases. Use in wet, muddy conditions; storage out 
in the sun; frequent use; or improper care can all cause your seals to wear out more quickly.   

 

Where can I find my serial number? 

The serial number is engraved under the steer tube, it’s composed of 7 numbers. 

 

How can I adjust my FCV? 

The FCV is a very precise, internal system who is preset in our factory. 

 

I’ve no been completely successful in doing my own adjustments. What can I do? 

The internal tuning (settings/FCV/air damper) is tuned at the factory to correspond to most riders, however it’s possible to adapt 
all of these parameters to match with your weight, your use and your style. Even so, to optimize your set up please contact your 
BOS service center. 

 

 

For  any  other  questions,  please  visit  our  FAQ  page  on  the  BOS  website  or  send  us  a  message  to 

[email protected]

 

 

 

Summary of Contents for Idylle FCV

Page 1: ...User Manual ...

Page 2: ...uential resulting from the use of its products local legislation prevailing Warranty exclusions This warranty does not cover the following cases Damage to products resulting from improper assembly other than listed below Products that have been modified by the owner or a third party Improper use Damages resulting from an accident or a crash under any circumstances Invalid servicing procedures and ...

Page 3: ...ollowing measurements to set your lower crown height This height is measured from the top of the fork leg the bottom of the visible part of the dust seal to the bottom of the lower crown 27 5 wheel model forks 217mm CAUTION This measurement match with a maximum of 705mm tire diameter The distance between the top of the upper crown and the top of the stanchion must be between 0mm and 30mm B Once yo...

Page 4: ... should be done on the fork before riding is to set the air pressure This adjusts the stiffness of the air spring according to your weight The stiffness of the air spring induces a degree of fork travel when you sit on your bike This value commonly called sag can vary based on your usage This value should be between 30mm smooth terrain climbs and 50mm rough terrain downhills The sag measurement sh...

Page 5: ...e air spring pressure the position of the fork in the crowns and the geometry of the bike This is not to mention personal rider preference That being said we can offer the following general advice Fork diving excessively on braking harden low speed compression Frequent bottom out harden high speed compression Feeling of harshness on roots and rocks soften high speed compression Discomfort arms get...

Page 6: ...en till snug do not compress the fork 3 2 Service It is essential to clean your fork after each day of riding without waiting Nothing is worse for the life of your seals than dirt and dust The cleaning process is also extremely simple clean the stanchions and seals with a clean rag You can occasionally lubricate the exterior of the seal with fork oil The following chart shows the minimum service i...

Page 7: ...he stanchion and the top of the oil with a clean ruler Oil Heights IDYLLE Rare FCV Hydraulic side right 140 mm Air side left 20 ml 140mm Important It is strongly recommended to use BOS Bi oil Changing the type of oil risks changing the fork s performance and reducing the life of wear parts Caution To correctly set the oil height on the hydraulic side of your fork purge the cartridge as you are add...

Page 8: ...at our recommended base settings given in the setup section of your product s user manual If you ve equalized your fork you may have some internal pressure from the production process You can eliminate this pressure by slipping a thin ziptie between your left dust seal and your stanchion until you hear the sound of air escaping Then reset your pressure and equalize your air chambers If you ve trie...

Page 9: ...recommended service intervals cannot cover 100 of customer s usage cases Use in wet muddy conditions storage out in the sun frequent use or improper care can all cause your seals to wear out more quickly Where can I find my serial number The serial number is engraved under the steer tube it s composed of 7 numbers How can I adjust my FCV The FCV is a very precise internal system who is preset in o...

Page 10: ...Date Location Air pressure Psi HS Compression LS Compression Rebond Remarks 4 impasse Léonce Couture F31200 Toulouse tel 33 0 534 25 33 66 fax 33 0 534 25 33 60 5 Notes ...

Reviews: