STIHL 019 T
16
• Close the vent screw (1) on the
rubber bulb.
- Continue squeezing rubber bulb
until the gauge indicates a
pressure of 0.5 bar (7.25 psi). If
this pressure remains constant for
at least 20 seconds, the engine
housing is airtight.
• However, if the indicated pressure
drops, the leak must be located and
the faulty part replaced.
Note:
To find the leak, coat the suspect
area with oil and pressurize the engine
housing again. Bubbles will appear if a
leak exists.
- Carry out the vacuum test - see 4.4.3
- After finishing the test, open the vent
screw and disconnect the hose.
- Remove the test flange.
- Loosen muffler mounting screws.
- Take out the sealing plate and tighten
the screws to 7.0 Nm (5.2 Ibf.ft).
- Install the carburetor - see 10.5.2.
• Connect pressure hose of tester
1106 850 2905 to nipple on test
flange.
• Use carburetor screws (2) to
mount the test flange (1)
1128 850 4200 to spacer
flange.
4.4.2
Pressure Test
