Lesson 1/Learning Event 3
Inspect the strainer inside the filler neck. It should be free of rust or dirt and have no holes, bends, kinks,
or anything else that would make it unserviceable.
Now for the tank. It should be checked for such things as dirt, rust, and water on the inside. Check the
outside for leaks, dents, and damage to the filler neck. Be sure the mountings are not loose. While you are
at it, notice how much fuel is in the tank because this may be useful knowledge later.
Let's look on top of the tank. An item you should give some attention to is the sending unit. If you know
how much fuel there is in the tank, that is what the fuel gage should show. If it doesn't, it could be the
sending unit is at fault.
While you are at it, you'd better check the electrical connections, the gasket, and the mounting screws.
Another item at the tank is the fuel pump. Things you should check on it are, again, electrical connections,
gaskets, and mounting screws. Another thing to check for on the pump is leaking fuel or vent line
After checking the line connections at the fuel pump, check the fuel line all the way to the carburetor and
the vent line to the air cleaner. You should look for such things as leaking connections and broken, bent,
crimped, or leaking lines.
So far, you have covered the components from the tank filler cap to the carburetor. On the carburetor, you
should look for leaks, cracks, insecure mountings, leaking gaskets, and loose or missing screws.
Next, inspect the linkage that controls the operation of the carburetor. When checking the accelerator
linkage, you should look for missing or damaged parts, improper connections, and incorrect adjustment. On
the choke linkage, you should check the cable condition, the cable stop, and cable adjustment (it should
move the choke from the full open to the full closed positions). Also, check the cable operation and choke
When the engine is operating, fuel will be flowing from the tank, through the lines, and through the
carburetor. A lot of air must go through the air cleaner if the fuel system is to operate properly, so this must
also be checked. Before you inspect the air cleaner, the cover must be removed. The things to look for