User Manual

Slide the venturi body back into the

carburetor body using the marks you made

to line it up so the venturi body guide can

be reinstalled into the venturi body. Use care

not to strip the threads. Do not overtighten.

Starting the Engine

Please refer to the Break-in and Starting Instructions on page 4 and 5 of the “Small-Medium Single

Cylinder 4-Stroke Engine Instructions (SAIMAN1).” Since the venturi system uses only the High

Speed Needle valve (85) to control the rich/lean mixture of the engine, we suggest using 4 ½ to 5

turns out from the fully closed position of the needle valve. You want to be sure you have a rich

mixture setting when first starting the engine.

Do not exceed 4,000 rpm during the first 10 minutes of operation. Subsequent runs may be made at

a slightly leaner setting. Forty minutes is considered sufficient time for normal break-in prior to the

first flight.

Parts unique to the control line engines:

FA-40CL FA-56CL FA-62aCL FA-72CL

Muffler SAI40a74 SAI5674CL SAI5674CL SAI7274CL

Carburetor Body Assembly SAI40a821CL SAI56831CL SAI56831CL SAI568215CL

Venturi Body SAI40a831CL SAI568215CL SAI568215CL SAI56821CL

Insert (Small Venturi) – SAI568219CL SAI568219CL SAI568219CL

Venturi System, Complete – SAI56821CL SAI56821CL SAI72821CL

Taper Collet & Drive Flange SAI40a27CL SAI5627CL SAI5627CL SAI7227CL

Throttle Barrel Assembly SAI40a87CL SAI5687CL SAI5687CL SAI7287CL

Carburetor Screw Set SAI40a90CL SAI5690CL SAI5690CL SAI7290CL

Carburetor Gasket Set SAI40a91CL SAI5691CL SAI5691CL SAI5691CL

Carburetor Nipple SAI56147CL SAI56147CL SAI56147CL SAI56147CL