Saito FG-40 4-Stroke

Saito FG-40 4-Stroke

Specifications

Saito FG-40 4-Stroke 1-Cylinder Gasoline Engine
Bore: 40.0 mm
Carb Type: Walbro/Saito
Crank Type: Threaded
Crankshaft Threads: M8 x 1.25
Cylinder Type: Ringed
Cylinders: Single
Displacement: 40.21 cc
Engine (Only) Weight: 1250 g
Muffler Type: Cast
Muffler Weight: 84 g
Prop Range: 19 x 10 - 21 x 10
RPM Range: 1,700 - 8,000
Recommended Fuel: Gasoline
Stroke: 32.0mm
Total Weight: 1440 g

 

Before starting the engine, inject a suitable amount of engine oil into the lubrication nipple on the crankcase using a syringe or pump while turning the propeller by hand and the valves clearance should be checked !!!

Oil: Stihl HP Ultra oil at a mix ratio of 15:1 - 20:1 (15:1 ratio required for break-in)

Tappet adjustment :
The valve clearance should be checked and adjusted after every after 1 hours while the engine is cold.

We tested the ignition of this engine and concluded that it is best to use max 7.4 volts ! this will allow you to keep the ignition in working condition for many years .

FG-40 Manual