O.S. Engines 91HZ-R 3C - Manual (Page 6)

10
Note on heating the glow plug
Example
The heatsink head and the crankcase
of on the engine is treated with an
anodized finish which does not
conduct current. Therefore, when
heating the glow plug, connect one
lead to the glow plug and the other
to the cover plate retaining screw.
11
Needle Adjusting Screw (M2.6x5 2pcs.)
Needle Control Arm
Head Gasket (0.2mm)
INTRODUCTION
Standard accessories
Glow Plug No.8
Check Valve
As delivered, the engine has the
carburetor lightly fit into the intake.
Secure it changing the angle according
to the model.
NOTE
This is the O.S. SPEED version of the 91HZ-R
developed expressly for the F3C flights.
The equipped DRS (Demand Regulator System)
ensures an always steady fuel supply which is
required for F3C flights which require repeated
vigorous attitude changes.
The new 61F carburetor is equipped with twin
needles which enable adjustment of the
idling/hovering and high speed mixture
independently.
The cover plate has a cell to accept a sensor
designed to install in the cover plate from Futaba
GY-701 Governor.