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16

THROTTLE LINKAGE

Before  connecting  the  throttle  to  its  servo, 
make  sure  that  the  throttle  arm  and  linkage 
safely  clear  any  adjacent  part  of  the  airframe 
structure,  etc.,  as  the  throttle  is  opened  and 
closed. Connect the linkage so that the throttle 
is  fully  closed  when  the  transmitter  throttle 
stick  and  its  trim  lever  are  at  their  lowest 
settings  and  fully  open  when  the  throttle  stick 
is  in  its  fully-open  position.  Carefully  align  the 
appropriate holes in the throttle arm and servo 
horn  so  that  they  move  symmetrically  and 
smoothly through their full travel.

NEEDLE-VALVE EXTENSION

Set Screw

The  needle-valve  supplied  with  this  engine  is 
designed  to  incorporate  an  extension  so  that, 
when  the  engine  is  enclosed  within  the 
fuselage,  the  needle-valve  may  be  adjusted 
from  the  outside.  For  this  purpose,  a  Needle 
Valve Extension Cable Set is supplied with the 
engine. If a longer extension is reguired, cut a 
commercially  available  rod  to  the  required 
length,  bend  one  end  to  an  L  shape,  insert  it 
into  needle's  center  hole  and  secure  it  by 
tightening  the  set-screw  in  the  needle-valve 
knob with 1.5mm Allen key.

Needle Valve Extension Cable Set

Knob

Cable

17

INSTALLING SILENCER

Apply silicone
sealant.

Exhaust Header Pipe

Exhaust Header

Pipe Nuts

Screw  the  exhaust  header  pipe  in  the 
cylinder  head  to  the  bottom  and  secure  it 
with  the  nut.  (A  short  screw  in  depth  may 
damage  the  threads  of  the  cylinder  head 
due to vibration.)

1.

Screw  the  silencer  on  the  exhaust  header 
pipe more than 8mm (10 turns) and secure 
it with the nut. (A short screw in depth may 
break  the  silencer  or  header  pipe  due  to 
vibration.)  The  distance  between  silencer 
and  cylinder  head  can  be  adjusted  by 
approximately 7mm by screwing the silencer 
on  or  out  the  header  pipe.  Adjust  the 
silencer position by rotating the silencer.

2.

3. Apply  silicone  sealant  to  the  threads  to 

prevent  the  silencer  and  header  pipe  from 
loosening and leaking oil.

Summary of Contents for Alpha Series

Page 1: ...suggested that any instructions supplied with the aircraft radio control equipment etc are accessible for checking at the same time 1 2 6 7 8 9 10 13 20 21 27 28 34 35 36 37 38 17 18 SAFETY INSTRUCTI...

Page 2: ...onous Do not allow it to come into contact with the eyes or mouth Always store it in a clearly marked container and out of the reach of children Never operate your engine in an en closed space Model e...

Page 3: ...check the tightness of the propeller nut and retighten it if necessary before restarting the engine Also check the tightness of all the screws and nuts before restarting the engine If you install a s...

Page 4: ...20 feet or 6 meters when preparing your model for flight If you have to carry the model to the take off point with the engine running be especially cautious Keep the propeller pointed away from you a...

Page 5: ...minimizes noise with its soft low amplitude sound Threaded header pipe allows adjustments in the distance between silencer and exhaust and exhaust angle New lubricating system eliminates the need for...

Page 6: ...ddition of a spinner assembly for centering the starter sleeve is desirable Use a heavy duty well balanced spinner either of metal or plastic Spinner FUEL The FS 110 should be operated on a methanol b...

Page 7: ...ank O S Super Filters large and small are available as optional extras O S Super Filter Fuel Can Filter S To prevent the pickup from adhering to the tank wall under suction and restricting fuel flow s...

Page 8: ...their top surfaces are in the same plane 15 How to fasten the mounting screws Hardwood mounting beams Radial motor mount cast aluminum Tighten second nut firmlydown onto first nut Tighten this nut fir...

Page 9: ...with the engine If a longer extension is reguired cut a commercially available rod to the required length bend one end to an L shape insert it into needle s center hole and secure it by tightening the...

Page 10: ...TANK LINES Make sure that the tank is well rinsed out with methanol or glow fuel before installation and that the pickup weight is well clear of the bottom of the tank when held vertically Plug comme...

Page 11: ...n it is necessary to replace Carefully install plug finger tight before final tightening with the correct size plug wrench GLOWPLUG The role of the glowplug Glowplug life Particularly in the case of v...

Page 12: ...succeeding sections under Starting Running in and Idle Adjustment The Needle Valve When set to produce maximum power at full throttle this establishes the basic fuel air mixture strength The correct m...

Page 13: ...remaining in the filament may burn you 25 Check that the current to the glowplug is switched off 3 To close the needle valve turn it clockwise while to open the needle valve turn it counter clockwise...

Page 14: ...nd for flying your model 1 2 Open the needle valve 3 4 turns from the fully closed position and start the engine 3 Open the throttle slowly to the mid speed position and disconnect the current to the...

Page 15: ...o be readjusted to a richer setting 7 29 IDLE MIXTURE ADJUSTMENT Start the engine open the throttle fully and set the needle valve slightly rich 30 45 from the highest r p m setting Close the throttle...

Page 16: ...seldom require adjustment However if after a considerable amount of running time a loss of power is detected or if he engine has been disassembled for repair these clearances should be checked and res...

Page 17: ...uel in the engine at the conclusion of a day s flying Accepted practice is to cut off the fuel supply while the engine is still running at full throttle then expel as much fuel residue as possible by...

Page 18: ...omplete Type 60Y Piston Ring Piston Piston Pin Piston Pin Retainer 2pcs Connecting Rod Cylinder Liner Cover Plate Cover Gasket Crankshaft Crankshaft Ball Bearing Rear Crankcase Camshaft Ball Bearing 1...

Page 19: ...No 1 Carburetor Rubber Gasket 1pc Rotor Guide Screw Mixture Control Valve Assembly O Ring L 2pcs O Ring S 2pcs Carburetor Rotor Throttle Lever Assembly Throttle Lever Retaining Screw Air Funnel Set S...

Page 20: ...VALVE ADJUSTING TOOL KIT NON BUBBLE WEIGHT NON BUBBLE WEIGHT S 72200060 72109700 M12 IN COWL HEADER PIPE INVERTED 90D IN COWL EXHAUST HEADER PIPE M12 IN COWL HEADER PIPE SIDE 60D 72109710 39 Displace...

Page 21: ...ight 2008 by O S Engines Mfg Co Ltd All rights reserved Printed in Japan 60092130 110903 6 15 3 Chome Imagawa Higashisumiyoshi ku Osaka 546 0003 Japan TEL 06 6702 0225 FAX 06 6704 2722 URL http www os...

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