Evaporative Control System - Toro Greensmaster 3120 Service Manual

Evaporative Control System

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1. Carbon canister
2. Tie wrap (2 each)
3. Cap screw (2 each)
4. Bracket
5. Spacer (2 each)
6. Hose clamp (2 each)
7. Convoluted tubing
Greensmaster 3120
17230SL Rev C
8. Vent hose (canister to engine)
9. Check valve (2 each)
10. Hose clamp (5 each)
11. Hose clamp (3 each)
12. Barb fitting (2 each)
13. Vent hose (tee to engine)
14. Tee
Greensmaster 3120 machines are equipped with a fuel evaporative control
system designed to collect and store evaporative emissions from the fuel tank.
The evaporate control system uses a carbon canister and a series of vent hoses
to collect these evaporative emissions. The fuel tank uses a non-vented fuel cap.
A fuel tank vent fitting is positioned in the top of the tank that allows tank venting
through the carbon canister. Fuel vapors from the fuel tank are vented to the
canister and consumed by the engine when the engine is running.
Note: If there is restriction in the carbon canister, the fuel tank vent fitting or the
vent hose, 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, restriction in the evaporative
control system is likely.
Figure 10
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Page 3–11
Vent hose (filter to tee)
Vent hose (canister to tee)
Vent hose (tank to canister)
Fresh air filter
Clamp
Engine: Service and Repairs