Stihl TS 400 - Page 15

STIHL TS 400 15
5.2.2 Testing with
excess pressure
• Connect the pressure hose of
the tester to the nipple on the
test flange.
- Check that the spark plug is
secure.
• Pump air into the crankcase with
the aid of the rubber bulb until an
excess pressure of 0.5 bar is
indicated on the pressure gauge.
There are no leaks in the crank-
case if this pressure is maintained
for at least 20 seconds.
• Install test flange (1) instead of
the carburetor.
Important! The pin must be
inserted in the impulse hose (2)
correctly when installing the test
flange.
• Remove decompression valve.• Check that the sleeve is present in
the manifold.
• Check whether pin (1) is located in
bore No. 1 in the test flange and
screw it in if necessary.
• Screw in and tighten plug (1)
instead of the decompression
valve.
• Close venting screw (1) on the
rubber bulb.