If they appear damaged or deteriorated, replace them.

Balancer Adjustment
Torque LimiterMain Throttle Sensor Resistance Inspection
Turn the ignition switch to OFF.
Measure the main throttle sensor resistance in the same
way as input voltage inspection, note the following.
Disconnect the throttle sensor setting adapter [A] from the
connector of the main harness side.
Special Tool - Throttle Sensor Setting Adapter: 57 ...
Fuel Consumption
This display mode shows the fuel
consumption in Liter or Gallon by numerical
value counted from the start of
measuring to present time.
A. Fuel Consumption
B. “L”
While the fuel consumption is displayed,
push the lower button and
hold it in until the fuel consumption
values re ...
Oil Level Inspection
If the oil has just been changed, start
the engine and run it for severalminutes
at idle speed. This fills the oil
filter with oil. Stop the engine, then
wait several minutes until the oil settles.
NOTICE
Racing the engine before the oil
reaches every part can cause engine
seizure.
...