BMW Motorcycle (R1100RT, R1100RS, R850/1100GS, R850/1100R). Manual - part 21

13.2

13.3

13

Technical Data

R 1100 RS

Fuel grade

Super (premium), 
unleaded, 95 octane 
(RON)

Mixture preparation

Motronic MA 2.2

Throttle stub pipe intl. dia.

mm (in)

45 (1.772)

Throttle angle in rest position

°

10

Air cleaner

Circular paper element

13.4

Technical Data

R 1100 RT

Fuel grade

Super (premium), 
unleaded, 95 octane 
(RON)

Mixture preparation

Motronic MA 2.2

Throttle stub pipe intl. dia.

mm (in)

45 (1.772)

Throttle angle in rest position

°

10

Air cleaner

Circular paper element

13.5

Technical Data

R 850 GS

R 1100 GS

Fuel grade

Super (premium), un-
leaded, 95 octane 
(RON)

Super (premium), 
unleaded, 95 octane 
(RON)

Mixture preparation

Motronic MA 2.2

Motronic MA 2.2

Throttle stub pipe intl. dia.

mm (in) 45 (1.772)

45 (1.772)

Throttle angle in rest position

° 10

10

Air cleaner

Circular paper element

Circular paper element

13.6

Technical Data

R 850 R

R 1100 R

Fuel grade

Super (premium), un-
leaded, 95 octane 
(RON)

Super (premium), 
unleaded, 95 octane 
(RON)

Mixture preparation

Motronic MA 2.2

Motronic MA 2.2

Throttle stub pipe intl. dia.

mm (in) 45 (1.772)

45 (1.772)

Throttle angle in rest position

° 10

10

Air cleaner

Circular paper element

Circular paper element

13.7

Removing and installing air cleaner

•

Remove dualseat.

•

[RS/GS/RT] Remove side sections of fairing.

•

[R] Remove the tank cover.

•

Remove fuel tank.

•

Remove plug from air temperature sensor.

•

Remove air cleaner cover.

•

Remove air intake pipe.

•

Remove brake fluid reservoir from holder.

•

Remove rear brake pipe from holder.

•

Disconnect plug for brake light switch and 
detach lead.

•

Remove front/rear air cleaner box.

•

Remove cable connector/wiring harness from air 
cleaner box.

•

Separate connector between neutral switch and 
side stand switch and detach lead.

•

Unfasten intake pipe from throttle body.

•

Motorcycles with throttle-cable divider: disen-
gage throttle cables.

•

Remove rear muffler (silencer).

•

[ABS] Detach brake caliper.

•

[ABS]/[GS/R/RT] Detach ABS sensor.

•

Remove rear wheel.

•

Remove suspension strut.

e

  Caution:

Place support under rear wheel drive.

•

Unfasten screw connection on rear frame/only 
loosen mount at front of struts.

•

Tilt rear frame upwards and secure with strap.

•

Detach return pipe from oil trap at air cleaner box 
(1).

•

Remove air cleaner box. 

•

Install in the reverse order of work.

1

RS130090

RS230310

13.8

Removing and installing throttle 
stub pipe

•

Remove cover (1).

•

Press in the spring catch on the multi-pin plug at 
the throttle position sensor (2) and pull off the 
plug.

L

  Note:

Do not remove the throttle position sensor unless it 
has to be renewed (basic adjustment 
necessary— see Motronic diagnosis instructions).

•

Unfasten retainer (3) for fuel pipe and pull off the 
pipe.

•

Slacken off hose clips.

•

Slide intake connection into air cleaner box and 
remove throttle body.

e

 

Caution:

Make sure that the O-ring (4) at the throttle stub pipe 
is in good condition

•

Disconnect throttle cable (5) from the right, then 
from the left, throttle body.

•

Motorcycle with throttle-cable divider.

a

Figure (A)

•

Disconnect cable (6) for choke.

•

Install in the reverse order of work

Adjusting choke, idle speed and synchronization

a

See Group 00

A

1

3

4

2

5

5

6

RS130100

13.9

Removing and installing injectors

•

Unfasten retainer (3) for fuel pipe and pull off the 
pipe.

•

Press in the spring catch at the injector plug (5) 
and pull off the plug.

•

Remove injector.

e

  Caution:

Make sure that O-rings at injector are in good con-
dition.

•

Install in the reverse order of work.

Removing and installing Motronic 
control unit

•

Remove fuel tank.

e

  Caution:

Switch off ignition; disconnect ground (earth) lead at 
battery and insulate it.

•

Remove Motronic control unit.

•

Remove connector strip.

•

Install in the reverse order of work.

RS130010