Saito FG-57T, Instruction Manual

CAUTION: Never use your bare 

fingers to start any model engine. This 

could lead to injury.

There are a variety of electric starters 

on the market. The Hangar 9

®

PowerPro

™

 H-D 12V starter (HAN162) 

will work perfectly on all of the twin-

cylinder gasoline Saito engines.

Engine Mounting

When mounting the engine please 

note that the carburetor of the engine 

extends beyond the mounting pads 

of the engine mount and this requires 

the use of at least 1.0-inch (25mm) 

standoffs between the firewall and the 

engine mounting pads. Conversely, 

you could provide a relief hole in 

the firewall for the carburetor to 

stick through into the interior of the 

fuselage/nacelle.

The engine mounting holes are sized 

for M4 screws. If you choose a 

different screw, carefully enlarge the 

holes in the engine mount to provide 

the proper clearance.

Make sure that adequate cooling air 

is circulating around the engine! The 

cooling air should pass around and 

through the cylinder fins and over the 

exhaust pipes as insufficient cooling 

will cause the engine to run poorly and 

cause mechanical failures. Without 

cooling air over the exhaust pipes, it is 

very likely they will become loose at 

the cylinder head. Always ensure that 

there is at least a 3:1 (5:1 preferred) 

ratio of cool air exhaust outlet area to 

inlet area. If you need to add baffles 

within your cowl to direct the air over 

and through the cylinders, you should 

do this before you have an overheating 

problem that could possibly damage 

your engine.

When attaching the muffler pipes, 

screw the pipes into the cylinder heads 

as far as possible before tightening 

the locking nut to the cylinder head.  

This ensures adequate strength in the 

threaded joint between the cylinder and 

the muffler/exhaust pipe. (The use of 

a thread locking compound will help 

greatly in this area.)

Included with your engine is a muffler 

clamp that is designed to be mounted 

to the airframe and provides the 

support necessary for the exhaust 

pipes. It is important to either use 

the supplied exhaust pipe mounts or 

devise another method for yourself to 

adequately support the exhaust tubes 

and prevent tube breakage in flight.

E N G I N E   M O U N T I N G

 5

Breather 

nipple

Muffler 

clamp