Air-Bleed Adjustment - O.S. engine OSM11532 Owner's Instruction Manual

CARBURETTOR AIR-BLEED ADJUSTMENT
Pre-Flight Check
Start engine and adjust needle-
valve as previously described.
Close the throttle gradually.
Find the idling position.
Hold the model.
Stop the engine.
Attention: Do not leave the glowplug connected to the battery
while adjusting the carburettor throttle.
Hold model level, then slowly raise its nose.
If revolutions increase.
Note: Stop engine by
pinching fuel delivery
tube. Do not touch
needle-valve.
These adjustments can be
made without stopping
the engine.
However, it is advisable for
beginners to stop the engine
for safety reasons.
Open air-bleed
screw.
Half turn at a
time.
approx.
15˚
If engine runs unevenly or stops.
approx.
15˚
Immediately point
nose down, so that
engine runs steadily
again.
Stop the engine.
Close air-bleed
screw.
Half turn at a
time.