Cub Cadet CC 4BP 32cc - Manual (Page 22)

FUEL SYSTEM AND CARBURETOR
19
Troubleshooting the Fuel System
The function of the fuel system is to store, mix the fuel
with air and deliver it to the engine. The fuel system
consists of the following components:
• Fuel tank
• Fuel lines
• Fuel filter
• Carburetor
When troubleshooting the fuel system follow these
steps:
1. Drain and inspect the fuel:
1a. Look for water.
1b. Look for dirt.
1c. Look for discoloration.
1d. Sniff carefully to see if it smells like varnish.
1e. Save the fuel to show to customer.
2. Inspect the fuel filter. If it is dirty, replace it follow-
ing the steps described in the section on Fuel
System Repair in this manual. See Figure 5.1.
Figure 5.1
Fuel filter
3. Inspect the fuel lines:
3a. Are they cracked?
3b. Are they clogged?
3c. Are they brittle?
NOTE: If the answer to any of the above is yes,
replace the fuel lines following the procedure
described in the chapter on the Fuel System
Repair.
4. The fuel cap is vented. Ensure that the vent is
clean and working properly. See Figure 5.2.
5. Test and inspect the primer bulb:
5a. Is it leaking or is it brittle?
5b. If so, replace the primmer bulb.
5c. Does it circulate fuel when pumped?
5d. If not, replace the primer.
6. If compression, ignition and fuel supply are OK,
but it does not run with fresh fuel repair/replace
the carburetor as described in the Carburetor
Repair section.
7. Test run the engine before returning it to service.
Figure 5.2
Vent
CHAPTER 5: FUEL SYSTEM AND CARBURETOR