
What is the design
baseline for BMW
Motorrad ABS?
Within the limits imposed byphysics, BMW Motorrad ABS en-sures directional stability on anysurface. The system is not op-timised for special requirementsthat apply under extreme com-petitive situations off-road or onthe track.
Special situations
The speeds of the front and rearwheels are compared as onemeans of detecting a wheel'sincipient tendency to lock. If thesystem registers implausible val-ues for a lengthy period the ABSfunction is deactivated for safetyreasons and an ABS fault mes-sage is issued. Self-diagnos-is has to complete before faultmessages can be issued.
In addition to problems with theBMW Motorrad ABS, exceptional
riding conditions can lead to afault message being issued.Exceptional ridingconditions:
Riding for a lengthy period withthe front wheel lifted off theground (wheelie).
Rear wheel rotating with themotorcycle held stationary byapplying the front brake (burn-out).
Heating up with the motorcycleon the centre stand or an auxil-iary stand, engine idling or witha gear engaged.
Rear wheel locked for a lengthyperiod, for example while des-cending off-road.
If a fault message is issued onaccount of exceptional ridingconditions as outlined above, youcan reactivate the ABS functionby switching the ignition off andon again.
What significance
devolves on regular
maintenance?
Invariably, a technical sys-tem cannot perform beyondthe abilities dictated by its levelof maintenance.
In order to ensure that the BMWMotorrad ABS is always main-tained in optimum condition, itis essential for you to complystrictly with the specified inspec-tion intervals.
Reserves for safety
The potentially shorter brakingdistances which BMW MotorradABS permits must not be usedas an excuse for careless riding.ABS is primarily a means of en-suring a safety margin in genuineemergencies.
Take care when cornering. Whenyou apply the brakes on a corner,the motorcycle's weight and
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zEngineering details

General instructions
BMW Motorrad recommendsthe use of parts and accessoriesfor your motorcycle that are ap-proved by BMW for this purpose.
Genuine BMW parts and ac-cessories and other productswhich BMW has approved canbe obtained from your authorisedBMW Motorrad dealer, togetherwith expert advice on their install-ation and use.
These parts and products havebeen tested by BMW for safety,function and suitability. BMWaccepts product liability for them.
Conversely, BMW is unable toaccept any liability whatsoeverfor parts and accessories which ithas not approved.
Also bear in mind the informa-tion on the effect of wheel sizeon suspension-control systems(77).
BMW Motorrad cannotassess each non-BMWproduct to determine wheth-er it can be used on or in con-nection with BMW motorcycleswithout constituting a safety haz-ard. Country-specific official au-thorisation does not suffice asassurance. Tests conducted bythese instances cannot makeprovision for all operating con-ditions experienced by BMW mo-torcycles and, consequently, theyare not sufficient in some circum-stances.
Use only parts and accessor-ies approved by BMW for yourmotorcycle.
Whenever you are planningmodifications, comply with all thelegal requirements. Make surethat the motorcycle does notinfringe the national road-vehicleconstruction and use regulationsapplicable in your country.
Power sockets
Notes on use of power sockets:
Operating electricalaccessories
Electrically powered accessoriesinevitably place a strain on thebattery. It is essential to ensurethat the battery retains its abilityto start the engine.
Cable routing
The cables from the power sock-ets to the auxiliary devices mustbe routed in such a way thatthey:
Do not impede the rider
Do not restrict the steeringangle or obstruct handling
Cannot be trapped
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zAccessories

BMW Motorrad recommendsusing only tyres tested by BMWMotorrad.
You can obtain detailed informa-tion from your authorised BMWMotorrad dealer or on the Inter-net at www.bmw-motorrad.com.
Effect of wheel size
on suspension-control
systems
Wheel size is very important as aparameter for the ABS. In partic-ular, the diameter and the widthof a motorcycle's wheels are pro-grammed into the control unitand are fundamental to all cal-culations. Any change in theseinfluencing variables, caused forexample by a switch to wheelsother than those installed ex-works, can have serious effectson the performance of the sys-tem.
The sensor rings are essential forcorrect road-speed calculation,
and they too must match themotorcycle's system and con-sequently cannot be changed.
If you decide that you would liketo fit non-standard wheels toyour motorcycle, it is very im-portant to consult a specialistworkshop beforehand, preferablyan authorised BMW Motorraddealer. In some cases, the dataprogrammed into the control unitcan be changed to suit the newwheel sizes.
Removing front wheel
without centre standOE
Make sure the ground is leveland firm and place the mo-torcycle on a suitable auxiliarystand.
with centre standOE
Make sure the ground is leveland firm and place the motor-cycle on its centre stand.
Remove screw1and removethe ABS sensor from its bore.
Raise front of motorcycle untilthe front wheel can turn freely.BMW Motorrad recommendsthe BMW Motorrad front-wheelstand for lifting the motorcycle.
Install the front-wheel stand(83).
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77
zMaintenance

Fastener, quick-releaseaxle, front
45 Nm
Remove the front-wheel stand.
Apply the front brake and firmlycompress the front forks sever-al times
Tighten axle clamping screw2to the specified torque.
Clamp, front quick-re-lease axle
23 Nm
Insert the ABS sensor into itsbore and install screw1.
without centre standOE
Remove the auxiliary stand.
Removing rear wheel
Make sure the ground is leveland firm and place the motor-cycle on its stand.
Remove two screws1.
Remove three screws2andremove the rear-wheel cover.
without centre standOE
Make sure the ground is leveland firm and place the mo-
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79
zMaintenance

torcycle on a suitable auxiliarystand.
with centre standOE
Make sure the ground is leveland firm and place the motor-cycle on its centre stand.
Remove screw1of the speedsensor and remove the speedsensor from the holder.
Remove axle nut2, counter-holding at the left-hand side ifnecessary.
Slacken adjusting screws3onleft and right by turning themcounter-clockwise.
Push the rear wheel as far for-ward as possible and disen-gage the chain from sprock-et4.
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80
zMaintenance

Roll the rear wheel as far for-ward as possible and loop thechain over sprocket4.
Install axle nut2, but do nottighten it at this point.
Seat the speed sensor in theholder and install screw1ofthe speed sensor.
Adjust the chain sag (76).
without centre standOE
Remove the auxiliary stand.
Hold the rear-wheel coverin position and install threescrews2.
Install two screws1.
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zMaintenance

BMW Motorrad front-
wheel stand
Install the front-wheel
stand
without centre standOE
Place the motorcycle on a suit-able auxiliary stand.
with centre standOE
Make sure the ground is leveland firm and place the motor-cycle on its centre stand.
The BMW Motorrad frontwheel stand is not designedto support motorcycles not fittedwith a centre stand or withoutother auxiliary stands. A motor-cycle resting only on the frontwheel stand and the rear wheelcan topple.
Place the motorcycle on itscentre stand or another auxiliarystand before lifting the front
wheel with the BMW Motorradfront-wheel stand.
Use the front-wheel stand withthe number (0 402 240).
Slacken adjusting screws1ofthe front-wheel stand.
Push the two adapters2apartuntil the front forks fit betweenthem.
Use locating pins3to set thefront-wheel stand to the de-sired height.
Install rubber buffers4in thetop positions on left and right.
Centre the front-wheel standrelative to the front wheel andpush it against the front axle.
Align the two adapters2sothat the front forks are securelyseated.
Tighten adjusting screws1.
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zMaintenance

If the front of the motor-cycle is raised too far theauxiliary stand will lift clear of theground and the motorcycle couldtopple to one side.
When raising the motorcycle,make sure that the auxiliary standremains on the ground. If ne-cessary, adjust the height of thefront-wheel stand or the auxiliarystand.
Apply uniform pressure to pushthe front-wheel stand downand raise the motorcycle.
Fuses
Removing fuse
Risk of fire if an attempt ismade to jumper defectivefuse.
Always replace defective fuseswith new fuses of the correctamperage rating.
Switch off the ignition.
Remove the seat (38).
Squeeze the two latches1to-gether and remove the fusecover.
Pull the defective fuse up andout of the fuse box.
If fuse defects recur fre-quently have the electriccircuits checked by a specialistworkshop, preferably an author-ised BMW Motorrad dealer.
Installing fuse
Remove the defective fuse andreplace it with a fuse of thecorrect amperage rating.
The fuse assignments andfuse amperage ratings spe-cified for your motorcycle are lis-ted in the section entitled "Tech-
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zMaintenance