Before you try to synchronize the
carburetors, make sure all of the
following are checked or a4usted first
or you won't get accurate readings: air
filters, spark plugs, air suction valves
models), valve clearance, throttle
cable play, carburetor holders and
1. Ride the bike to warm it up fully, set the
idle speed, then stop the engine. The correct
idle speed is shown on the tune-up decal on
the motorcycle (Figure 20) and in Table 8.
2. Remove the fuel tank as described in
Chapter Seven of the main book. Hook up a
temporary fuel supply or use a long fuel line
to connect the carburetors to the fuel tank.
Plug the vacuum line that goes from the
carburetor to the vacuum fuel tap (Figure 21).
When supplying fuel by temporary
means, make sure the tank is secure
and all fuel lines are tight-no leaks.
3. Remove the rubber caps or vacuum line
from each carburetor's vacuum tap (Figure
22) and attach a set of vacuum gauges
following the instrument manufacturer's
4. Turn the fuel tap to PRI, start the engine
and check the vacuum readings. The
difference between cylinders should be less
than 0.80 in. (20 mm Hg). Identical readings
5. If the difference is greater than specified,
loosen the locknut and turn the appropriate
synchronizing screw located between the
carburetors as required to equalize the
vacuum in all cylinders (Figure 23). Kawasaki
makes a special tool, part No. 57001-351,
which is a combined wrench and screwdriver
designed for this job:
a. First match the No. 1 and No. 2
b. Then match the No. 3 and No. 4
c. Finally, match the left-hand pair of
carburetors to the right-hand pair.
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