Operating The Engine - Toro 23740 Operator's Manual

Operating the Engine

Positioning the Air-cleaner Cover for
Cold or Warm Air Temperature
Important: Running engine with air-cleaner cover
positioned for cold weather operation in normal
conditions can damage engine.
The air-cleaner cover has 2 position: the cold- or
normal-ambient air positions:
Adjust the air-cleaner cover as follows:
•
When operating in a cold ambient air condition (cold
air temperature and humidity)—position the air-cleaner
cover with snowflake decal facing out (Figure 8).
Note: Use this position if your machine exhibits
carburetor icing. Symptoms include the engine runs
rough at idle or low speed, and it discharges black or
white smoke in the exhaust.
•
When operating in a normal ambient air
condition—position the air-cleaner cover with sun decal
facing out (Figure 8).
Note: Use this position if your machine is not exhibiting
carburetor icing.
1. Normal ambient air
position
Open the Fuel-shutoff Valve
Move the fuel-shutoff valve located below the choke, to the
right to turn on fuel (Figure 9).
Figure 8
2. Cold ambient air position
1. Fuel On position
2. Fuel-shutoff valve
Starting the Engine
1. On the right side of the engine, rotate the engine
On/Off switch clockwise to the On position (Figure
10).
1. Engine-recoil handle
2. Throttle
2. On the rear, left side of the engine, move the choke
lever to the left to the On position. On a warm engine,
leave the choke in the Off position (Figure 9).
3. Place the throttle midway between the Slow and Fast
positions located on rear, right side of the engine
(Figure 10).
12
Figure 9
3. Choke
Figure 10
3. Engine switch (Off
position)
4. Engine switch (On
position)