Rev. A
Multi Pro 1200/1250Page 3 -- 18Kohler Gasoline Engine
Fuel Evaporative Control System
Figure 19
FRESH AIR
FILTER
CARBON
CANISTER
FUEL
TANK
ENGINE
CHECK
VALVE
TO ENGINE
FITTING
FILTER
Multi Pro 1200 and 1250 sprayers are equipped with a
fuel evaporative control system (EVAP) designed to col-
lect and store evaporative emissions from the fuel tank.
The EVAP uses a carbon canister to collect these evap-
orative emissions. Fuel vapors from the fuel tank are
vented to the canister where they are stored. Vapors
from the canister are consumed when the engine is run-
ning which purges the canister.
The fuel tank on these sprayers uses a non--vented fuel
cap. To connect the tank to the evaporative control sys-
tem, a fuel vent valve is positioned in the top of the tank
that allows tank venting through the carbon canister.
NOTE: If there is restriction in the fresh air filter, the car-
bon canister or the fuel vent valve, the fuel tank may dis-
tort 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.
Machines with a carbon canister include a single engine
connection to the engine intake system that is used to
connect the evaporative system to the engine. These
machines use an inline check valve between the carbon
canister and the engine fitting. Evaporative control sys-
tem components for Multi Pro 1200 and 1250 sprayers
are shown in Figure 19.
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