Innova 5568 Manual Del Propietário página 9

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Make sure initial timing is correct. If necessary, prepare engine for advance timing check as
directed by manufacturer's instructions.
a. With timing light directed at timing marks, note position of rotating timing mark in relation to
reference pointer. Reading should indicate initial timing in accordance with manufacturer's
specifications.
b. Adjust engine speed to the specified RPM for advance test.
c. Press Function (F) switch as needed to select advance mode. The ADVANCE indicator and
Advance Degree symbol will display when advance mode is selected. The LCD display will
show "0" degrees advance and engine rpm.
d. With timing light directed at timing marks, press Cylinder/Advance Increment switch as needed
to realign timing marks to initial timing or as instructed by manufacturer's specifications. Note
degrees advance on LCD display and compare with manufacturer's specifications.
e. Turn off ignition and disconnect timing light from engine.
Vacuum Advance
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Make sure timing light is properly connected as described in TIMING LIGHT CONNECTION.
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Make sure initial timing is correct. If necessary, prepare engine for advance timing check as
directed by manufacturer's instructions.
NOTE: A vacuum pump equipped with a vacuum gauge is needed to check vacuum advance.
a. With engine off, disconnect vacuum hose from distributor's vacuum advance port; plug vacuum
hose.
b. Connect vacuum pump to distributor's vacuum advance port.
c. Start and run engine until it reaches normal operating temperature.
d. Press Function (F) switch as needed to select advance mode. The ADVANCE indicator and
Advance Degree symbol will display when advance mode is selected. The LCD display will
show "0" degrees advance and engine rpm.
e. With timing light directed at timing marks, note position of rotating timing mark in relation to
reference pointer. Reading should indicate initial timing in accordance with manufacturer's
specifications.
f. Using vacuum pump, apply specified amount of vacuum to distributor's vacuum port.
g. With timing light directed at timing marks, press Cylinder/Advance Increment switch as needed
to realign timing marks to initial timing. Note degrees advance on LCD display and compare
with manufacturer's specifications.
h. Turn off ignition and disconnect timing light from engine. Unplug and reconnect vacuum hose to
distributor's vacuum port.
Electronic Advance/Retard
Refer to manufacturer's instructions for procedures to check electronic advance/retard. For some
systems, it may be necessary to set the timing light's advance display to "0" and to read timing from
the vehicle's timing marks.
Operation
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