Honda XR250R Owner's Manual page 64

after replacing the throttle cables or removing
the carburettor, are made with the lower
adjuster (2). Minor free play adjustments are
made with the upper adjuster (4). To adjust
free play, loosen the lock nut (1) or (3), and
turn the adjuster (2) or (4). Tighten the lock
nut after adjustment.
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