BMW AG Motorcycle (F 650 GS). Manual - part 18

16.2

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16.3

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16

Technical Data

F 650 GS

Fuel tank

Type

Plastic tank with cover

Tank capacity

l (Imp.gal/

US gal)

17.3 (3.8/4.6)
(including 4 l (0.88/1.06) reserve)

Type of fuel

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

Fuel pump

Type

Peripheral-gear pump

Operating voltage

V 7 - 15

Fuel pressure

bar (psi) 3.5 (49.8)

Delivery rate

l/h (Imp.gal/h;

US gal/h) 150 (33; 39.6) at 13.5V, 3.5 bar (49.8 psi)

16.4

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16.5

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16 11 030 

Removing and installing fuel 

tank

e

 Caution:

Note risks when handling fuel.
Disconnect ground lead from battery and insulate.

16 11 030 

Removing fuel tank

–

Remove the seat and the toolkit.

–

Secure front wheel in position.

–

Removing chain takeup roller.

a

....................................................See Group 27

–

Remove left and right rear trim panels.

–

Remove left and right silencers.

a

....................................................See Group 18

•

Remove brake fluid reservoir from rear frame.

•

Close off the brake line to the brake master cyl-
inder beneath the fuel tank.

•

Close off fuel supply line (1) and the fuel return 
line (2) with hose clips, BMW No. 13 3 010.

•

Open the hose clips (arrows) and disconnect the 
fuel lines from the fuel-pump unit.

•

Disconnect breather hose (3) from the roll-over 
valve.

L

 

Note:

Do not unplug the BMS control unit.

•

Disengage the rubber strap (arrow) and remove 
the BMS control unit.

•

Disconnect the plugs for fuel-level sensor (3) and 
fuel pump (4).

•

Disconnect the plug for rear light/turn 
indicator (5).

•

Remove holder (6) for BMS control unit from the 
fuel tank.

•

Press the tab (arrow) down and remove the plug 
for rear light/turn indicator (5) from holder (6) for 
the BMS control unit.

E160020

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3

E160030

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5

6

E160040

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6

16.6

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•

Remove lower fasteners (1) securing rear frame 
to main frame.

e

 Caution:

Note the brake line (arrow) at the brake master cyl-
inder. Do not allow the weight of the rear frame to 
rest on the brake line.

•

Remove upper fasteners (2) securing the rear 
frame to the main frame and carefully remove the 
rear frame complete with the tank.

•

Remove the fastener securing the rear section of 
the rear mudguard to the rear frame.

•

Remove the fasteners securing the fuel tank to 
rear frame (3).

•

Remove fuel tank.

E160010

1

2

3

E160050

16.7

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16 11 030 

Installing fuel tank

•

Installation is the reverse of the removal proce-
dure: pay particular attention to the following.

e

 Caution:

Note the brake line at the brake master cylinder. Do 
not allow the weight of the rear frame to rest on the 
brake line.

•

When installing the fuel tank and the rear frame, 
make sure that all lines and hoses are routed at 
the top of the tank.

•

Make sure that fuel feed hose (1) and fuel return 
hose (2) are correctly routed.

d

 Warning:

Do not use screw-type hose clamps on the fuel hos-
es, because they could damage the hoses and re-
sult in a fire hazard.

•

Close hose clamps with pliers, 
BMW No. 13 1 500.

X 

Tightening torques:

Fuel tank to rear frame ................................. 21 Nm
Rear frame to main frame ............................. 21 Nm
Silencer to rear frame................................... 21 Nm
Clip for silencer ............................................ 55 Nm
Exhaust manifold to cylinder head................ 20 Nm
Tail to rear frame ............................................ 3 Nm
Brake fluid reservoir for rear brake
to rear frame .................................................. 5 Nm

16 11 211 

Removing and installing fuel 

filler cap

•

Remove fasteners (3) holding the fuel filler cap.

•

Remove fuel filler cap (3) together with fuel filler 
neck (5) and sealing ring (4).

•

Installation is the reverse of the removal proce-
dure: pay particular attention to the following.

•

Check sealing ring (4) for damage, replace if nec-
essary.

X 

Tightening torques:

Fuel filler cap to fuel tank................................ 3 Nm

E160090

E160020

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E160070

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Removing and installing roll-over 
valve

–

Remove seat.

•

Disconnect breather hose.

•

Release fasteners (1).

•

Remove roll-over valve with gasket.

•

Remember to clean the sealing faces before re-
installing.

X 

Tightening torques:

Roll-over valve to fuel tank ............................. 3 Nm

16 12 008 

Replacing fuel filter

See Group 00

16 14 011 

Removing and installing fuel 

pump

e

 Caution:

Note risks when handling fuel.
Disconnect ground lead from battery and insulate.

–

Remove seat.

•

Disconnect the plugs for fuel-level sensor (3) and 
fuel pump (2).

•

Close off fuel supply line (5) and the fuel return 
line (4) with hose clips, BMW No. 13 3 010.

•

Open the hose clips (arrows) and disconnect the 
fuel lines from the fuel-pump unit.

E160080

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E160020

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3

2

16.9

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•

Release ring (1) using wrench, 
BMW No. 16 1 021

•

Remove fuel-pump unit (3) with gasket (2).

•

Installation is the reverse of the removal proce-
dure: pay particular attention to the following.

•

Make sure the fuel-pump unit is installed in the 
correct position and that the fuel feed hose and 
the fuel return hose are correctly routed.

•

Close hose clamps with pliers, 
BMW No. 13 1 500.

X 

Tightening torques:

Union nut to fuel tank ................................... 36 Nm

16 14 009 

Removing and installing fuel 

pump

–

Remove fuel pump unit.

–

Remove the warning-contact switch.

–

Remove the fuel strainer.

•

Installation is the reverse of the removal proce-
dure.

16 14 500 Removing and installing fuel strainer

–

Remove fuel pump unit.

•

Using a screwdriver, pry fuel strainer (7) off the 
pump.

•

Installation is the reverse of the removal proce-
dure.

16 14 050 

Removing and installing warn-

ing-contact switch for fuel level

–

Remove fuel pump unit.

•

Cut through cable clip (5).

•

Clamp fuel-pump unit in vise with protective 
jaws.

•

Use a screwdriver to bend back the tabs on con-
tact switch (6) and push the switch off the pump 
bracket.

•

Use a punch of suitable diameter to drive pins (4) 
out of the housing.

•

Installation is the reverse of the removal proce-
dure.

L

 Note:

The reserve fuel capacity of the fuel tank can be ad-
justed by varying the height of the contact switch in 
the tank.

E160060

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6

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4