FUEL SYSTEM
Carburetor
2000 FE290 Gasoline Vehicle Maintenance and Service Supplement Page 14-5
14
If the carburetor floods or leaks fuel at the float bowl gasket or carburetor vent tube, the fuel inlet valve could
be worn or dirty. Another cause of this condition may be a damaged float that has filled with fuel and sinks.
For elevations above 3000 feet, main jets other than standard operate more effectively. The following chart
lists the elevation ratings for various jet sizes. No adjustment is required for the pilot jet. If the vehicle idles
roughly, turn the pilot air screw (Figure 14-3, Page 14-3) out until the vehicle idles smoothly.
MAIN JET ELEVATION/SIZE CHART
CHANGING THE MAIN JET
1. Remove the carburetor.
1.1. Remove the seat or raise the bed to gain access to the engine.
1.2. Turn fuel shut-off valve on gas tank to the closed (OFF) position (Figure 14-21, Page 14-26).
1.3. Loosen the air intake hose clamp (22) and disconnect the air intake hose (23) at the carburetor end only
(Figure 14-6, Page 14-6).
1.4. Remove the governor guard (5).
1.5. Remove the governor cable cotter pin (25) and clevis pin (24) (carburetor end only).
1.6. Disconnect the carburetor vent line (14).
1.7. Disconnect the fuel supply line (26) at the carburetor end only. Temporarily plug the end of the fuel
line to prevent fuel leakage.
1.8. Remove the carburetor retaining nuts (19), intake pipe (17), and carburetor (12). See following NOTE.
2. Position the carburetor with the drain screw (11) over a catch basin (Figure 14-7, Page 14-7).
3. Turn the carburetor bowl drain screw counterclockwise two or three turns and drain all the fuel from the
bowl into the catch basin (Figure 14-7, Page 14-7). Tighten the drain screw to 10 in-lb (1.1 N·m).
Return fuel to the gas tank or dispose of properly.
4. Mark the body of the carburetor and the carburetor fuel bowl with an indelible ink marker so that, after
removal, the bowl can be installed again in the same position (Figure 14-7, Page 14-7).
5. Remove the carburetor fuel bowl retaining screw and washer (12), then remove the fuel bowl (10) and
clean it with a nonflammable solvent (Figure 14-7, Page 14-7). See following NOTE.
ALTITUDE
(FEET ABOVE SEA LEVEL)
FE290 ENGINE
MAIN JET SIZE
0 - 3000
82
3000 - 5000
80
5000 - 8000
78
8000 - 10,000
75
10,000 AND OVER
72
• NOTE THE ORIENTATION OF THE GASKET (16) BETWEEN THE CARBURETOR INTAKE (17)
PIPE AND THE CARBURETOR BODY (12) SO THAT IT CAN BE REPLACED IN THE SAME
ORIENTATION (FIGURE 14-6, PAGE 14-6).
• WHEN REMOVING THE CARBURETOR BODY, THE THROTTLE RETURN SPRING (11) MUST
BE DISCONNECTED. NOTE ITS PROPER ORIENTATION SO THAT IT CAN BE REPLACED IN
THE SAME ORIENTATION.
• THE CARBURETOR MUST BE KEPT UPRIGHT DURING REMOVAL.
NOTE