Saito FG-14C Owner's Operating Instruction Manual - Setting
13
6. Once this change made to the low end, open the high end by
1/2 turn from where you ran it before. Restart the engine and
reset the high-end needle valve.
7. With the engine running and the high-speed needle
valve set as above, adjust your throttle setting to
achieve the desired idle speed.
Tip: The more your prop weighs, the lower your
achievable idle speed will be.
8. Check the transition of the engine from low-speed to
high-speed. To do this, let the engine idle for a period
of 10 seconds and then rapidly move the throttle from
low to wide open. One of three things will happen:
a. The engine will respond immediately and the
transition will be very smooth to wide open throttle.
b. The engine will stumble and gradually increase
the rpm to wide open throttle. In this case the
idle needle setting is too rich. Make a very small
adjustment to lean the needle (clockwise rotation)
and try again. Continue to do this until you achieve
an immediate response from the engine.
c. The engine will abruptly quit when the throttle
is opened. This indicates a too-lean low-speed
setting. Open the low-speed needle valve a small
amount (counterclockwise) and try again. Continue
to do this until you achieve an immediate response
from the engine.
Recheck the High-Speed Needle Valve
Setting
You need to go back and recheck the high-speed
needle valve setting again as described above after
adjusting the low-speed setting. Because of the design
of the needle assembly, adjusting the low-speed needle
actually affects the size of the fuel aperture and can
affect the high-speed needle setting.
Enjoy Your New Engine
Once you have set your needle valves the final tuning
will occur in the air. Listen carefully to your engine while
it is running.
• If the rpm starts to drop a couple of minutes into the
flight, or when you climb the airplane, your high-
speed needle is a bit lean. Land as soon as you can
and richen the high-speed needle settings a couple
of clicks and take off again.
• If during flight your engine has good power but
occasionally sounds like it ‘misses’, this is a good
indication that you are running the engine too rich.
The next time you land, lean the engine out one click
at a time until you are happy with the performance
in the air.
FG-30B/FG-36B/FG-40 Engine Instructions
Engine mount for the FG-36B
Mount the FG-30B,FG-36B or FG-40 engine on
aircraft-grade plywood with more than 10mm of
thickness or to a mount of equivalent strength, then
firmly fix with 4 bolts. We highly recommend the use of
the Saito Motor Mount for the FG-30B (SAIG3095) or
FG-36B/40 (SAIG3695) to mount this engine to a model
aircraft.
NOTICE:
Be sure to use flat washers or a metal
plate on the reverse side of the mount to prevent the
bolts from sinking into the plywood. Before flying the
airplane, be sure to check for loose bolts.
Since this engine is equipped with a floatless carburetor
with a diaphragm pump, the direction of the cylinder in
relation to the position of the fuel tank can be upright
or inverted.
Engine Mounting and Muffler Attachment