User Manual

NEEDLE-VALVE EXTENSION

The needle-valve supplied with these engines 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.

The angled exhaust of the silencer can be rotated to

any desired position in the following manner:

1) Loosen the locknut and assembly screw.

2) Set the exhaust outlet at the required position by

rotating the rear part of the silencer.

3) Re-tighten the assembly screw, followed by the

locknut. The standard silencer is quite effective but

reduces power to some degree.

INSTALLATION OF SILENCER

Assembly screw

Cone baffle

Turn to requlred position

Exhaust outlet

Locknut

Exhaust pressure nipple

Model engines generate considerable heat. Do

not touch any part of your engine until it has

cooled. Contact with the muffler (silencer),

cylinder head or exhaust header pipe, in

particular, may result in a serious burn.

Reminder!