VEVOR XC2201 Originalanleitung Seite 3

Warning -To reduce the risk of injury,user must read
instructions manual carefully.
PREPARATION
1 . Start engine for 10 minutes approximately or until the motor reaches the
temperature in normal operation.
2 . Stop engine then disconnect the spark plug and connecting wires Have
the wires marked with number to distinguish and reconnect correctly.
3 . Clear away the dirt around the spark plug and remove it . Put them in
order on a clean surface to compare compression problems according to
the condition.
4 . Remove the high-tension wires from the center of the distributor and
ground them . If it is an electronic ignition system , then disconnect the
electronic ignition device or remove the primary battery terminal from the
coil . If it is a GM HEI system , then disconnect the primar wire in the
distributor cap.
5 .Remove air filter then fit throttle plate Remember , do not damage the
connector or the components on the throttle.
6 . Choose an appropriate adapter and attach it to the head of pressure
tester. To reach the hole easily and connect to the head of the gauge , a
cone rubber regulator is used instead of a hose assembly. But , the reading
of pressure got from this method is not so accurate.
TETING
1. Connect the quick coupling vs head of air gauge assembly to the pipe of
the cone rubber hose then screw the pipe in or push the rubber hose into
the spark plug hole.
2. Start engine to run at least 4 compression strokes or until the pressure
ofair gauge remains a fixed level. Then, stop engine and write down the
reading on air gauge.
Remove the tester and return air gauge to zero. Fit the spark plug and the
connecting wires back and continue the test of the next cylinder.
RESULTS ANALYSIS
1. If a normal cylinder, the pressure should be getting higher after each
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