PILOT AIR SCREW ADJUSTMENT/ENGINE IDLING
SPEED ADJUSTMENT/EXHAUST PIPE INSPECTION
PILOT AIR SCREW ADJUSTMENT
Pilot air screw 1
To optimize the fuel flow at a smaller throttle
opening, each machine's pilot air screw has
been individually set at the factory. Before
adjusting the pilot air screw, turn it in fully and
count the number of turns. Record this num-
ber as the factory-set number of turns out.
Turn in the pilot air screw until it is lightly
Turn out the pilot air screw by the speci-
fied number of turns.
ENGINE IDLING SPEED ADJUSTMENT
1. Start the engine and thoroughly warm it up.
Engine idling speed
Turn the throttle stop screw 1 until the
engine runs at the lowest possible speed.
To increase idle speed → Turn the throt-
tle stop screw 1 in a.
To decrease idle speed → Turn the throt-
tle stop screw 1 out b.
EXHAUST PIPE INSPECTION
Damage → Replace.
Install the O-rings with their depressed a fac-
3 - 14
Pilot air screw:
2 turns out (example)