Cub Cadet MTD 70 Series - Manual (Page 50)

61, 65 and 70 Series Vertical Shaft Engines
44
Charcoal canister system with the canister snapped into the tank
This charcoal canister system consists of:
• A charcoal canister
• The fuel tank and cap
• A roll over valve vent
• A carburetor insulator.
• Vacuum lines
This system operates as follows:
1. The gasoline evaporates, letting off vapors.
2. The vapors exit the fuel tank through the roll over
valve vent.
NOTE: The fuel cap used with the charcoal canister
system is not vented. If a vented cap is
used, the EVAP system will not work.
See Figure 4.16.
3. The vapors are routed through the charcoal canis-
ter. See Figure 4.17.
4. The activated charcoal inside the canister absorbs
the hydrocarbons allowing the air to pass through
and out to the atmosphere.
Figure 4.15
Charcoal canister
Roll over valve
Figure 4.16
Vented
Unvented
Figure 4.17
Charcoal canister
Vapor