Fsa Ns acr stem User manual

NS ACR Stem InstallationInstructions

Published Oct,2018.ZS210.v0 ©Full SpeedAhead

Introduction

Congratulationson yourpurchase Full SpeedAhead product.Please readthese instructionsandfollow themforcorrect use.Failure to follow thewarnings andinstructionscouldresult in damage to product not covered

underwarranty,damage to bicycle;orcause anaccident resultingin injury ordeath.Since specifictoolsandexperience are necessary forproperinstallation,it isrecommendedthat the product be installedby aqualified

bicycle technician.FSA & Vision assumesno responsibility fordamagesorinjury relatedto improperly installedcomponents.

Warranty

Full SpeedAhead (FSA) warrantsall FSA,Vision,MetropolisandRPM productstobe free fromdefectsin materialsorworkmanshipforaperiodoftwo years afteroriginalpurchase unless otherwise statedin the full

warranty policy.The warranty isnon-transferable andvalidto the original purchaserofthe product only.Anyattempt to modify the product in any way such as drilling, grinding,andpaintingwillvoidthe warranty.For

more information on warranty policy andinstructionsforcompletingawarranty claim,check outthe Full Warranty Policyfoundat ourwebsite: http://www.fullspeedahead.com/en/support/warranty-policy

Specification

ItemNumber/Model NameST-OS-160/ NS Series ACR

FSA road,MTBandstemsare compatible with industry standard steerertube andhandlebar diameters. To choose the correctFSA stem,first check the specificdiameterofsteerertube andhandlebar to be used.

Components

Follow the assembly orderin the illustration:

Spacers

②NS ACR StemBody x1

③FixingBoltsx2

④Left /Right spacer5mm x1

⑤Left /Right spacer10mm x2

⑥ExpanderAssembly x1(Not include)

⑦Topcap x1

⑧Compression Bolt x1(Not include)

⑨StemFace Plate x2

⑩Face Plate Fixingboltsx4

Wiring Installation Tips

1. Before proceedingto installation,all Brake/HydraulicHose /electronicwiring/shouldbe run through the handlebar andNS ACR StemBody ②andSpacers ④⑤/ACR ExpanderAssembly/ACR headset.(Fig. B)

2. Installation isgreatly improvedwhen usingaguide cable to gently pull the housingorelectronicwiresthrough the stemfromeitherdirection.

StemInstallation to ForkSteerer Tube

1. Measure diameterofsteerertubeto becertain it iscorrect size for④ACR steminstallation.Itsoften requiredthat the steerertube be cut to length.Thisoperation shouldbe performedby aqualifiedbicycle technician.

Install fork through the stembody,place the spacers overthe fork andthen accordingto yourdemandplace left/right spacers ④⑤(④⑤are detachable,figA).

Note:Carbon steerertubesshouldnot extendthrough the stemcompletely toensure topcap can be usedto tighten the NS ACR stem.Ensure that the steerertube isclean andfree ofburrs orchips before installing

stemonto steerertube.

2. Headset shouldbe installedperheadset manufacturer sinstructions.

3. Apply small amount ofFSA Dynamicinstallation compoundon steerertube.

4.Install the ExpanderAssembly ⑥perExpanderAssembly instructionsbelow.

5. Apply grease to stemfixingbolts ③.Tighten the boltsby alternatingbetween bolts1/4turnat atime so both boltsreach propertorque simultaneously.

Do not go above maximumtorque ratingprintedon the stem.Iftwo fixingboltsgo overthe maximumtorque,may cause damage to boltsandcarbon fork cracks. Ensure stemwill not slipbefore

proceedingto install handlebar.

Expander Assembly Installation

The ExpanderAssembly isdesignedto work with Carbon SteererTubes. Do not apply grease on the Carbon SteererorExpanderAssembly.

1. Install the Stem ②ontothe Carbon Steerer.Tighten the SteererClampBolts ③fingertight only.

2. Adjust ExpanderAssembly ⑥so it contactsthe innerwallsofthe steerertube but isstill ableto slide inside.Install the pre-adjustedExpanderAssembly.Tighten the ExpanderAssembly with a6mm hex wrench to 60-

90 kgf.cm /6-9 Nm/53-80 in.lbs. oftorque.

3. Tighten the TopCap ⑦with a5mm hex wrench to until properbearingpreload isachieved. Note:Properbearingpreloadisapparent when there isno “knock”(fore /aft orup/down free play) in the headset

assembly,while the bearings rotate freely (free steeringmotion).

Check thealignment ofStemtothe front wheelbefore final torque isappliedto the SteererClampBolts, loosen andadjust ifrequired. Be sureall boltsare tightenedto recommendedtorque.

Handlebar Installation to Stem

1. Apply FSA DynamicInstallation Compoundon handlebarclamparea. Insert handlebarbetween stembody ②andface plate ⑨.Pre-tighten Face Plate Fixingbolts ⑩.

2. Apply grease to faceplate bolts ⑩andtightenthe upperboltsto atorque 60-90 kgf.cm /6-9 Nm/53-80 in.lbs1/4turn at atime to tighten faceplate evenly (Fig. B).

3. Tighten the lowerboltsto atorque 60-90 kgf.cm /6-9Nm/53-80 in.lbs 1/4turn at atime to tighten faceplate evenly.

Do not go above maximumtorque ratingprintedon the stem.Check handlebar forslippage before each ride toensure safe operation.Contact FSA forTroubleshootinginformation.

Be sure to choose the correct stemto fit the steertube andhandlebar forwhich it isto be installed. Installingthe stemon an incorrect steerertube,orhandlebar clampdiametermay cause damage to product,or

cause an accident resultingin injury ordeath.

lFSA NS ACR stemsare designedto work with 1 1/8”steertubes.(Apply small amount ofFSA Dynamicinstallation compoundon steerertube andstem)

lFSA Road andMTBstemsare available to fit 31.8mm Handlebarclamponly.

Measure Fork Steerertube andhandlebar clamp areabefore installingstem.Use an accurate measuringdevice such as acaliperormicrometer.Installingstemonto an undersizedsteertube orhandlebar can cause stem

orbarto slipcausinglossofcontrol ofbicycle; resultingin an accident,damage to bicycle,injury ordeath.Use FSA DynamicAssembly Paste between stem,steerertube,andhandlebarto reduce chancesofslippage.

Consult fork andhandlebarmanufacturerforexact diameterspecification.Ifmanufacturerspecificationsare unavailable,general guidelinesare as follows:

Headset andFork must be installedbefore steminstallation.Headset andFork installation requiresspecializedknowledge,tools,andexperience.General mechanical aptitude may not be sufficient to properly install these

components. It isrecommendedthat the headset andfork be installedby aqualifiedbicycletechnician.Improperinstallation canresult in failure ofheadset,fork,stem,andcause personal injury ordeath.