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Blow out all the passages and jets with
compressed air. Don't use wire to clean any of
the orifices: wire will enlarge or gouge them.
3. Check the cone of the float needle and
if it is scored or pitted (Figure 27).
Inspect the throttle slide for scoring and
wear. Replace it if necessary.
5. Examine the end of the idle air (mixture)
screw for grooves or roughness. Replace it if
damaged. Replace a worn O-ring.
6. Check the O-rings on the float chamber
drain plug. Replace them if damaged.
7. Check the choke relief plate for smooth
operation: push it in and let it spring back
(Figure 28). If it does not operate smoothly,
check for dirty or damaged parts; clean or
replace as necessary.
The fuel level in the carburetor float bowl is
critical to proper performance. The fuel flow
rate from the bowl up to the carburetor bore
depends not only on the vacuum in the throttle
bore and the size of the jets. but also upon the
fuel level. Kawasaki gives a specification of
actual,firel level, measured from the top edge of
the float bowl with the carburetor held level
(Figure 29).
This measurement is more useful than a
simple float height measurement because
actual fuel level can vary from bike to bike.
even when their floats are set at the same
height. However, fuel level inspection requires
a special clear tube that attaches to the
overflow tube (Figure 29). You can get the
proper tube at your Kawasaki dealer.
The fuel level is adjusted by bending the float
arm tang.
Block up the front end of the motorcycle so
that the carburetor bores are horizontal. The
carburetors must be level.
2. Pull the carburetor overflow/drain tube up
and attach a clear tube to the end. The tube
must have an inside diameter not less than
in. (6 m m ) so that capillary action will not draw
the fuel up inside. giving a false reading.
Hold the clear tube against the carburetor
body and turn the fuel tap to PRI (prime). With
the carburetor level to the ground. check the
fuel level in the tube. It should be slightly below
the bottom edge of the carburetor body. See
Table 1 for your bike's fuel level specification.
Take your readingjust after the.fue1 level
has risen to its rnaximurrl in the tube. If
you raise the tube (and the fuel drops in
the tube) you'llprobablyget a faultylevel
reading. Turn the fuel tap ON, drain the
rube and try it again, forcing the ,fuel
level to rise against surface tension
within the tube.
4. If the fuel level is incorrect, adjust the float
height. Remove the float bowl from the
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