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Instructions Manual

Magnum XL 1.20RFS, Instructions Manual

The Magnum XL 1.20RFS is a powerful and reliable engine designed for model airplanes. To ensure optimal performance and safe operation, it is crucial to have the Instructions Manual at hand. Download the manual for free from manualshive.com to access detailed guidelines, troubleshooting tips, and maintenance instructions.

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M A G N U M X L 1 . 2 0 R F S

Exploded Parts View

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Summary of Contents for XL 1.20RFS

Page 1: ...ly in the airplane or on a suitable engine test stand to run the engine Follow the mounting instructions in your kits instruction manual or on the plans for individual mounting recommenda tions Do not clamp the engine in a vise to test run it N Use the recommended size propeller and follow the proper procedure for mounting the propeller Use the correct size wrench to tighten the propeller nuts Do ...

Page 2: ...application The size of the fuel tank used should be 12oz 16oz depending on the model and the length of flights desired Use of a 16oz tank will pro vide between 15 20 minutes of run time at full throttle Use of a fuel tank any larger than 16oz can lead to excessive leaning of the engine during flight and is not recommended q Carburetor Orientation In some cases the particular installation of the e...

Page 3: ...tting q Starting by Hand When starting the engine by hand always use a chicken stick Never just use your hand or serious injury could result To make the engine easier to start by hand it should be primed This is done by opening the carburetor com pletely and choking the engine using the hand operated choke With the carburetor choked pull the propeller through the compression stroke 2 3 times This ...

Page 4: ...ter the first 1 hour of engine running After that the valves can be checked and adjusted about every 8 hours of run ning Some signs that the valves need adjusting are loss of power rattling sounds at low idle or if you have repaired the engine after a crash q 1 With the engine cold remove the rocker cover on top of the cyl inder head by unscrewing the two socket cap screws q 2 Rotate the crankshaf...

Page 5: ...M A G N U M X L 1 2 0 R F S Exploded Parts View ...

Page 6: ...ed B Fully charge glow starter C Engine not being turned over fast enough C Use an electric starter D Old fuel D Replace with new fuel E Engine flooded with too much fuel E Remove glow plug and expel fuel from cylinder 2 Engine does not draw fuel A Idle mixture screw set too lean A Reset idle mixture to factory setting B High Speed Needle Valve fully closed B Reset high speed needle valve to facto...

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