Introduction
Congratulations on purchasing this
fine engine.
It has been over 20 years since Saito
introduced their first 4-stroke glow
engine, the FA-30. Since that time Saito
has led the way in the development of
powerful 4-stroke glow engines, from
the small FA-30 to the large FA-325
5-cylinder radial engine. Leading the
way in innovations, we have seen the
V-twins, and now Saito is proud to
introduce the 4-stroke gasoline-powered
engine.
Saito 4-stroke gasoline engines are
developed exclusively for model
airplanes. They are designed with
an emphasis on high performance,
durability and weight savings. Their
components are modified to adapt
to the gasoline version of existing
glow engines and are equipped with a
4-stroke gasoline engine carburetor and
ignition systems.
Remember, a properly cared for
engine will offer many years of
modeling enjoyment.
Contents Included
FG-36
Engine
Engine Mount (SAIG3695)
Ignition (SAIG36153)
Muffler (SAIG3674)
Muffler Manifold (SAIG3675)
Muffler Nut, 2 pcs (SAIG3680)
Spark Plug CM-6 (SAIG36120)
Spark Plug Wrench (SAIG36969)
Valve Adjusting Tools
Muffler Wrench
Instruction Manual
Saito Decal
FG-20
Engine
Ignition (SAIG20153)
Muffler (SAIG2074)
Muffler Manifold (SAIG2075)
Muffler Nut, 2 pcs(SAIG2080)
Spark Plug 1/4-32 (SAIG20120)
Spark Plug Wrench (FG20967)
Valve Adjusting Tools
Instruction Manual
Saito Decal
Safety Precautions
This manual describes the engine and
its general operating procedures. For
mounting and control, see the
instruction manual for the model
airplane. Some suggestions are
included in this manual for mounting
the engine using the included
motor mount.
S A F E T Y P R E C A U T I O N S
1
Features of the Gasoline
4-Stroke Engine
• Fuel efficient
• Fuel cost is low
• Aircraft stays relatively clean
during operation
Table of Contents
Introduction ........................................................................................................................ 1
Contents Included ............................................................................................................. 1
Safety Precautions ............................................................................................................ 1
Engine Mounting and Muffler Attachment Notes ....................................................... 2
Throttle Linkage ................................................................................................................ 3
Propeller ............................................................................................................................. 3
Propeller and Fuel Consumption ................................................................................... 3
Fuel ...................................................................................................................................... 4
Fuel Tank and Plumbing ................................................................................................. 4
Ignition System .................................................................................................................. 4
Spark Plug ......................................................................................................................... 5
Carburetor ......................................................................................................................... 5
Preparation Before Starting the Engine ....................................................................... 6
Starting the Engine ........................................................................................................... 6
Adjustment of the Carburetor ....................................................................................... 9
General Operating Procedures .................................................................................... 10
Normal Operation, Maintenance and Additional Information .............................. 10
Troubleshooting Guide .................................................................................................. 11
Engine Maintenance ...................................................................................................... 11
Valve/Tappet Gap Adjustment ..................................................................................... 12
Carburetor Maintenance .............................................................................................. 12
FG-20 Dimensions and Specifications ......................................................................... 16
FG-20 Parts List .............................................................................................................. 17
FG-36 Dimensions and Specifications ......................................................................... 18
FG-36 Parts List .............................................................................................................. 19
Full Parts List .................................................................................................................. 20
Consumer Warranty and Repair Policy ..................................................................... 22
VERY IMPORTANT
Failure to read and follow these instructions before you proceed to start your engine
may result in engine damage and the voiding of your warranty.
14387 SAI FG_20andFG_36 Manual.indd 2-1
12/16/08 2:09:10 PM
