BRP Johnson 4HP Service Manual page 59

FUEL SYSTEM
CARBURETORS
FLOAT
Install the float and the float pin.
Always install the float pin from the left side to the right
side. (See the figure.)
NOTE:
After installing float, inspect for smooth movement of float.
CHECKING AND ADJUSTING FLOAT HEIGHT
approx. 45˚
Measure the float height.
NOTE:
Make sure that float weight is not applied to needle valve.
 Vernier calipers
Float height H: 10 ± 1 mm
If the measurement is out of the specification, bend the
adjustment tab only.
When adjusting the tab, do not bend to the point that the
tab applies pressure to the needle and seat.
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