BMW R1150 User Manual download pdf (Page 8)

Note: The valve covers may stick slightly and you will need to tap them firmly

with the palm of your hand.

Note: Be careful not to dislodge the black rubber vibration damper block in the

bottom front of the valve adjustment area (not on some R1100GS).

12. Remove the black rubber timing hole plug, located above and behind the

right side throttle body, using a long thin screwdriver to pry it off.

13.Turn the lower alternator pulley clockwise with a 17mm box wrench.

14. Insert a long screwdriver into the right side spark plug hole while turning the

engine over.

15. When the screwdriver is almost pushed out the maximum, use a flashlight

and start looking for the timing marks S – OT in the small timing window where

you removed the rubber plug. (R1100GS = Z – S – OT)

16. Center the OT mark in the window.

Note: Also at OT, the arrow on the cam chain gear will be pointing straight out.

17. Wiggle the valve rockers in and out on both sides - both the intake and

exhaust valve rockers for one side should wiggle slightly in and out, the rockers

on the other side should be tight.

18. You will be adjusting the valves on the side where they all wiggle slightly as

follows:

Valve Clearance

Intake = .006in. (.15mm)

Exhaust = .012in. (.30mm)

Valve Location

Intake Valves are to the rear (take air/gas in from the throttle body).

Exhaust Valves are to the front (exhaust to the exhaust pipes).

19. Adjust the proper valves, as described above, using a 10mm box, 3mm hex

T-handle, and feeler gauge(s).

Note: Each intake and exhaust has two valves each that are operated by a

forked rocker. Correct procedure calls for you to use two identical feeler gauges

simultaneously – one for gauging the valve you are adjusting, and the other as a

spacer on the other valve. This is to prevent the rocker from canting while you

are adjusting it. Many people get excellent results using only one feeler gauge

and skip the spacer feeler gauge.

20. Insert the correct feeler gauge between the valve stem and the adjuster

screw. There should be slightly firm drag on the feeler gauge – be sure that you

do not have the gauge canted or curved as you are measuring.

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BMW R1150 User Manual Page 8