9) Adjust the flow screw so that the "CO" value is equal to 3.2 % :t 0.5 %.
10) Slowly operate the throttle accelerating the engine until it reaches 4000 rpm and then set throttle
back to close position; check that the idle speed remains at the above set value; if not, repeat the
procedure starting from step (3).
Specific tooling
020332Y Digital rpm indicator
494929Y Exhaust fumes analyser
020331Y Digital multimeter
MSS ZIP 100 4T Maintenance
MAIN - 37
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