Saito FG-73R5 4-Stroke
SAITO FG-73R5 4-Stroke
Saito FG-73R5 4-Stroke 5-Cylinder Gasoline Engine
Displacement: 72.7 cc
Propeller: 22x10" - 23x10"
Practical RPM: 1,200 - 7,000RPM
Crankshaft Threads: M10x1.25
Center of Engine to Drive Washer: 86mm
Mounting Bracket to Center of Engine: 96mm
Mounting Bracket to Drive Washer: 182mm
Outer Diameter: 230mm
Vertical Mounting Hole Bracket Centers: 80mm
Horizontal Mounting Hole Bracket Centers: 110mm
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 .