Online version - not for reprint
34 MS 270, MS 280
Fit sealing plate (1)
0000 855 8106 between the heat
shield and cylinder exhaust port
and tighten down the heat shield
with the muffler mounting screws.
The sealing plate must completely
cover the opening in the heat shield.
VA
146RA215
1
– Remove the carburetor
– see 12.2.1.
– Set the piston to top dead center
(T.D.C.).
Check that the sleeve (1) and
washer (2) are in place.
VA
146RA031
2
1
Fit the test flange
1119 850 4201 (1).
Fit sleeves (2) 1124 893 7100.
Fit nuts (3) and tighten them
down firmly.
VA
146RA180
3 2
1
Connect pressure hose of tester
1106 850 2905 to nipple on test
flange (arrow).
Close vent screw (1) on the
rubber bulb.
– Pump air into the crankcase with
rubber bulb until the gauge
indicates a pressure of 0.6 bar. If
this pressure remains constant
for at least 20 seconds, the
VA
146RA063
1
crankcase is airtight.
6.2.2 Pressure Test
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