Warning!
Avoid a carbon monoxide poisoning! Never let a petrol engine run in a closed gar-
age or another closed area!
After turning the motor off, both coil wires need to be separated from the motor coil and re-
move the spark plugs.
Note!
Isolate the coil wires or remove them from each other and all
metal surfaces. Note down, which spark plug wires lead to which spark plug positions.
Either attach the adapter connection
(2)
or the hose
(3),
as well as the hose connection
(5)
to
the pressure gauge
(1)
(see fig. 1).
Connect the compression tester with the first cylinder of the motor. Start the engine with at
least eight revolutions when the accelerator needs to be pushed down entirely (see fig. 3).
When switching the engine on, watch the maximal measured value on the pressure gauge
(1)
of the compression tester and write it down (see fig. 3).
As soon as the maximal value is written down, do not switch the engine on again. Then let the
air pressure of the pressure gauge
(1)
out, by pushing the air outlet button (see fig. 3).
Remove the compression tester from the first cylinder. Repeat the steps 6 to 8 for the rest of
the engine cylinders (see fig 2 and 3).
Note!
A good cylinder compression of the engine is shown with a high starting value and a
progressive build-up to the final maximal value. A bad compression of the engine cylinders is
shown with a low starting value and a much slower build-up to the maximal value. The com-
pression measure values for all engine cylinders should not vary by more than 10%.
Note!
Check your operating/maintenance instructions for acceptable pressure ranges.
© by WilTec Wildanger Technik GmbH
Item 61483
Seite 5
http://www.WilTec.de
http://www.aoyue.eu
02 2021
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