User Manual
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
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. 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 (Code  No. 
72200080)  is  available  from  O.S.  as  an 
optional part.
Needle Valve Extension
Cable Set
1.5mm Allen key.
Set Screw
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 7mm (9 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 5mm 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.










