MDS 1.48 FS Pro Ring, Руководство по эксплуатации

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engine rpm increases more than 200 – 300 rpm, the low-speed
needle is too rich. To adjust, screw in the needle to 1/16 of a turn
and re-test. To achieve the correct setting, always adjust the needle
a few clicks at a time.
After you’ve attained the correct needle settings, the engine will
have a very quick throttle response from idle to full throttle, and
throughout the mid-range. Be sure to always run the high-speed
needle so that the engine is slightly rich at full throttle.
Troubleshooting
Note: If the engine quits in flight or runs lean after ground set-up,
review step 1A of this manual refering to the carb O-ring. If the
O-ring is improperly seated or installed, the engine will leak air and
may repeatedly run lean.
Step 4. Engine Care
Fuel
Always use clean, fresh fuel. Because dirt is the number one
enemy of any engine, we highly recommend the use of an in-line
fuel filter, like the Hangar 9 HAN143, between the tank and the
carburetor. Also, place one between your fuel pump and the tank
filler line.
After-Run Oil
Because model fuel contains methanol, it has the property of draw-
ing moisture from the atmosphere. Exposure to moisture can cause
corrosion to such vital engine parts as the bearings and crankshaft.
Therefore, we strongly urge that after every flying session you drain
all fuel from the tank and then put four to five drops of after-run
oil, such as Prather Afterun or Marvel Mystery Oil, into the carbu-
retor. Turn the prop by hand several times to insure that the after-
run oil is distributed throughout the engine.
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MDS instruction manual 5x6.5 4/28/00 3:09 PM Page 11