Service Manual

Workman HDX Page 3 − 13 Kubota EFI Gasoline Engine
Carbon Canister
The function of the fuel evaporative control system is to
collect and store evaporative emissions from the fuel
tank and engine. A carbon canister that is mounted to
the left side of the frame is used to collect these evapora-
tive emissions. Fuel vapors from the engine and fuel
tank are vented to the canister when the engine is not
running. Vapors from the canister are consumed when
the engine is running.
NOTE: If there is restriction in the canister breather, the
carbon canister or the vacuum check valve, the fuel tank
may distort due to venting issues. If the fuel tank returns
to it’s normal shape when the fuel cap is removed, re-
striction in the evaporative control system is likely.
Carbon Canister Removal
1. Park vehicle on a level surface, raise bed and en-
gage parking brake. Stop the engine and remove key
from ignition switch. Allow engine to cool.
DANGER
Gasoline is flammable. Use caution when storing
or handling it. Do not smoke while filling the fuel
tank. Do not fill fuel tank while engine is running
or in an enclosed area. Always fill fuel tank out-
side and wipe up any spilled fuel before starting
the engine. Store fuel in a clean, safety−ap-
proved container and keep the cap in place. Use
gasoline for the engine only; not for any other
purpose.
2. Inspect carbon cannister and attached hoses for
damage or obvious leaks. A damaged or leaking cannis-
ter should be replaced.
3. Note hose routing, cable tie and anchor clamp loca-
tions. Remove fuel evaporative control system compon-
ents as needed (Fig. 11).
Carbon Canister Installation
1. Install all removed EVAP components. Make sure
that fuel hoses are not kinked after installation. Secure
all hoses with hose clamps, anchor clamps and cable
ties as noted. If hoses were removed from the carbon
canister, check hose connections for correct system op-
eration (Fig. 11).
2. After all evaporative control system components are
installed, remove bed support from lift cylinder and low-
er bed.
1. Carbon canister
2. Fuel hose
3. Vacuum check valve
4. Fuel hose (to engine)
5. Fuel hose (to tank)
6. Filter hose
7. Canister filter
8. Canister mount
Figure 11
TO
PORT
8
5
6
7
PURGE
TO
TANK
FUEL
AT ENGINE
1
2
3
4
Kubuta EFI
Gasoline Engine