Great Power Engine GP178 Gebrauchsanweisung - Seite 9

Blättern Sie online oder laden Sie pdf Gebrauchsanweisung für Motor Great Power Engine GP178 herunter. Great Power Engine GP178 14 Seiten.

Symptoms of Running Rich

When an engine is running rich, the fuel-to-air ratio is off because the carburetor is delivering too much

gasoline. (1) Signs that high needle is too rich include sluggish performance, excessive amount of smoke

from exhaust, engine stalling on acceleration. (2) Signs that low needle is too rich include engine easily

overflowing at starting procedure and slow throttle response between low and mid-range RPM. In

general, typical symptoms of a rich mixture are:

Poor fuel economy



Sluggish acceleration



Choke not needed from cold starts



Sooty or black spark plugs



Sooty or black muffler end pipes



Strong smell of gasoline when the engine is at idle



Uneven running (will often slow from regular idle RPM and then stop)



STARTING PROCEDURE

Make sure propeller bolts are all well tightened.

Make sure the area is clear of any kind of debris, sand, dirt or gravel.

Have someone with eye protection firmly hold the plane. At least two people are required to start

the engine.

Wear heavy-duty leather gloves when starting the engine.

Switch the radio system on and make sure all controls work correctly and are in correct direction.

Set the throttle cut switch to fully close the throttle and shut the engine off. After setting it up, re-

test for the throttle to make sure it will shut the engine off.

Switch the ignition on and close the choke. Next, flip the propeller until the engine starts and runs

for a few seconds.

Release the choke and the throttle setting should be a little higher than idle position. Quickly flip

the propeller. It usually takes 5 to 10 flips to start the engine. Beware of the possibility of engine

starting on any single flip of the propeller anytime, even if the ignition is off.

After the engine starts, slowly push the throttle to low idle and warm up the engine for 30 seconds.

Next, slowly open the full throttle and hold it for 5 seconds to make sure the engine can maintain

maximum power. Lastly, move throttle back and set the idle at low RPM.

BREAK-IN

Always break in the engine on a plane. If you break in the engine on a test stand, even with a proper

cooling system, it might still cause the engine to overheat. An engine is considered fully broken-in after

25 liters of fuel. The break-in procedure is as follows.