BMW R100R [130/168] Disassembling carburettor

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DISASSEMBLING CARBURETTOR NOTE Clean components with cleaning fluid and blow out nozzles with compressed air Slacken the clamp 22 and take off float housing 23 Knockout float pin 25 with punch dia 2 mm and take off float Take off float needle 11 Examine float 26 for signs of damage parallelism of float bodies weight of float leaks jamming float pin Examine float needle 11 for signs of damage damage notch to float needle tip dirt on tip or seat in carburettor 11 6 Examine float pin for bending Examine oork seal 24 renew if neces sary REMOVING NOZZLE SET Slacken oval head screw 21 Slacken main nozzle 16 Slacken idle nozzle 20 Slacken mixture adjusting screw 17 After slackening the nozzle assembly 15 remove atomizer 12 and needle nozzle 13 Examine sealing rings 14 18 renew if necessary Detach spring 6 at starter lever 7 After slackening the nut 9 on shaft of start carburettor 2 take off spring wash er 8 and both levers 5 7 Slacken the 4 fastening screws 10 and take off start carburettor housing 4 and gasket 1 Take off start carburettor and dean Examine gasket 1 and O ring 3 re place If necessary Slacken the 2 fastening screws 18 and take off carburettor cover 17 Withdraw spring 13 from carburettor housing Remove piston 10 complete with dia phragm 14 from carburettor housing After slackening the 4 fastening screws 16 separate retaining ring 15 and dia phragm 14 from piston Unscrew nozzle needle screw 12 from piston Remove nozzle needle 11 Clean carburettor housing with cleaning agent Clean all bores with compressed air Examine diaphragm 14 for cracking and porous points Check needle position Detach spring 4 from throttle lever 3 After slackening the nut 1 take nozzle lever 3 together with spring washer 2 off the shaft 7 After slackening the 2 fastening screws take off mounting bracket 5 After slackening the 2 fastening screws 9 take throttle valve 8 off shaft Withdraw shaft and examine O rings 6 replace it necessary

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