Saito FG-61TS Instruction Manual

FG-61TS Instruction Manual
Specifications
Bore Φ37.2mm x 2 Stroke 28mm x 2
Weight (Approx.） Main body : 2,090g / Muffler : 100g / Ignition : 170g
Propeller D21"~23" x P10"xP11 Plug CM-6
・Limit gauge (0.1t) for tappet adjustment 1pc ・Spanner for tappet adjusting lock nut 1 pc
・Spark plug[CM-6](Attached to the engine) 2pcs ・Muffler set
Standard
・Ignition system（w/sensor） 1set ・Muffler bracket 1set ・Plug wrench
accessories
・Stand off mount 1set ・Anti-loosening nut
・Filter with weight [G36-154] ・Durable tube for Gasoline (1m) [G36-155]
Optional parts
・Aluminum spinner nut [57T-30] ・Tappet adjusting kit [120S-161]
1. Fuel
●The fuel is mixture of commercial regular gasoline and reliable oil for 2-stroke engines.
●[Example of oil recommendation]
・ Klotz KL-200 Original Techniplate ・ Deluxe Materials PowerModel 2T-S etc.
●Be sure to use the mixture "gasoline : oil =15~20 : 1" by volume ratio. (Ex. 1000ml of gasoline should be mixed
with more than 50ml of oil ).
●In Break-in process, use 15:1 mixed fuel to ensure the best lubrication for initial run.
●Any damage caused by the fuel used, in which the oil ratio is lower than 20:1 ratio, is not warranted.
●Do not use gasoline ethanol mixed. It may cause not only power loss but also corrosion inside the engine.
Firewall
Stand off mount
Fuel feeding pipe
Air inhalation
Set the canter
of the carb
slightly upper than fuel level
To Carb nipple
Cut out
Gasoline-proof tube
Close as possible
2. Ignition
●Ignition arrangement- Place the main unit as far from other electrical devices as possible.
(1) Plug cord （meshed high tension cord)
2 cords compatibile for left/right cylinder. Insert the caps
deeply into plugs to make sure they wonʼt come off.
(2) Sensor cord
Connect with the cord from the sensor attached to the
engine.
(3) Battery cord (black / red cord)
Use a fully charged battery that has adequate spec. (6-9V,
more than 1000mA is recommended.). Between the battery
and main unit, make sure to set a heavy duty switch whose
capacity is higher than 3A.
(4)Tachometer cord
Connect the digital tachometer (Option). Otherwise the
connector is normally vacant.
3. Method of choke （ No need when you use starter）
●In advance, make a thin hole on the cowling to insert the choke bar /
slow needle adjustment bar.
●When choke, be sure to turn off the switch of the ignition system.
●As shown in the fig, pass the choke bar (with M3.5 thread on its tip)
thorough the hole on the cowling. Then turn the bar to insert into the
M3.5 internal thread at the center of the throttle lever.
●Pull the choke bar and fix it with a clip or clamp with full throttle as
shown in the fig so that it may not go back to the previous position.
●Grasp the prop by hand and turn it to the forward direction (CCW) for
several times, until the carburetor generates hissing-like sound. After
hearing this sound for about 5 times, quickly flick the prop by cracking it
some 10 times. Then choking is done.
●After that, remove the choke bar. After that, power on the ignition system and flick the prop quickly to start the engine.
If the engine doesnʼt start, repeat the choking procedure.
Disp. 60.9cc Applications
Practical speed 1,500-7,400rpm Max on ground Approx. 6,200-7,400rpm
Approx.
Battery for ignition system Voltage:6-9V, higher then 1,000mA (2C Lipo or 5C NiMH)
・Carburetor adjustment bar 1pc
1set ・Choke bar
1pc ・Hexagonal wrench
・Digital tachometer [G17-167]
Rubber cap for
Fuel
gasoline-resistant
pipe level
Fuel tank
Filter with weight
To outside
(1)Plug cord
Mail unit
Plug cap
(2)Sensor cord
(4)Tachometer cord
Sensor
Cowling
choke bar
Temporary fixed
by a clip
3. Break-in MOST IMPORTANT!!
Gasoline 50㏄ class
●Prop-recommendation : APC-22x10 for Break-in.
●Use 15:1 oil mixed fuel for Break-in.
●Never make the fuel mixture lean during Break-in.
It could cause seizure even during idling or low speed running.
1pc
1pc
●Before start the engine, open the main needle Approx. 3 turns
1set
open from full close.
●Start the engine (using a starter is recommended for safe).
●Run for about 10 seconds in low speed to warm up.
●Open throttle gradually up to over half open, in the meantime open the
main needle some turns. Continue to open the main needle until the
speed drop and gets dull, where the throttle opened over half.
●If it cannot make rich by opening by main needle (rpm doesnʼt drop),
then open slow needle too.
●Run in this very rich condition for 2 tanks.
4. Needle reference position (Set After Break-in)
●Main needle ： Approx.2.5~3 turns from full close
Air inhalation pipe ●Slow needle ： Approx.4~5 turns from full close （ Then throttle should be fully closed）
●Actually the best condition of the needle varies depending on the prop, temperature, humidity and so
on. Please adjust seeing the engine performance during flight.
5. Tappet adjustment
The valve clearance should be checked and adjusted after Break-in and every after 2 hours while the
engine is cold. Before adjusting tappet gaps, tighten up the screws around cylinders etc.
1. Remove the spark plug
and rocker arm covers of a
cylinder. Then turn the
prop CCW by hand to
place the piston at TDC of
compression stroke.
Switch （more than 3A）
Recommended battery
Voltage : 6-9.0V
Capacity : 1,000mA~
Note:
(3)Battery
cord ●As it uses oil mixed fuel, plane sometimes may get dirty by exhaust.
●Use reliable and well balanced prop, otherwise it cause abnormal vibration and may result in serious accident.
●During operation, the screws all over the engine can be loosen by heat expansion of metal. Tighten them up
occasionally.
●When the exhaust valve gets dull by carbon or sludge especially in cold atmosphere, remove the rocker cover
and apply some anti-rust spray to the exhaust valve to help the valve to move smoothly.
●All responsibilities for the use of the engine, and other obligations and responsibilities based on laws, regula-
Throttle lever tions, etc. are borne by the purchaser and the user, and SAITO SEISAKUSHO CO., LTD. is exempt from any
responsibilities.
choke bar for insert
M3.5 screw Warranty:
●If there is any deficiency from the factory concerning manufacture, please consult the shop or distributor you
Throttle valve
（Move to the left）
bought from, so that our company will repair them with responsibility. Any failure or trouble caused by unnec-
essary disassembly, modification, or other uses than those provided in the instruction manual is not subject to
the warranty.
Slow needle
22-7, 3-chome, Tokagi, Ichikawa-shi, Chiba prefecture 272-0024, Japan Phone: 047-378-4156 FAX: 047-378-4155
2. Loosen the lock nut and 3. Once the gap is set,
adjust the gap by hexago- tighten the lock nut and
nal wrench until you get attach the plug and
the correct gap (Right pic) covers. Then do the same
for both of intake & adjustment for the other
exhaust. cylinder.
All specifications and models are subject to change without notice.
SAITO SEISAKUSHO, CO., LTD.
www.saito-mfg.com
FG-19R3 Instruction Manual
For CCW
Main
Make rich
needle
Throttle
lever
For CW
Open
Main needle
Throttle
lever
CCW CW
Rich Lean
Slow needle
4. Turn the prop by hand to
check if the compression
is enough. If the gap is less
than 0, the valve is always
opened sightly and lose
compression. Then adjust
again.
Correct Gap
Close to "0" with no limit
Limit gauge
(0.1mm)
Must not be inserted