Toro 02000 GROUNDS PRO 2000, Operator'S Manual

Page: 25 / 36

Maintenance
25
ADJUSTING THE CHOKE
CONTROL (Fig. 31)
1. Loosen the cable clamp screw securing the cable to
the engine.
2. Move the remote choke control lever forward to the
CLOSED position.
3. Pull firmly on the choke cable until the choke is
completely closed, then tighten the cable clamp
screw.
ADJUSTING CARBURETOR AND
SPEED CONTROL (Fig. 32)
IMPORTANT: Before the carburetor and speed
control are adjusted, the throttle and choke controls
must be correctly adjusted.
1. Start the engine and let it run at half throttle for five
minutes.
2. Move the throttle control to SLOW. Hold the
governor lever so the throttle lever is in the idle
position (against the idle stop screw) and adjust the
idle stop screw to 1400 ± 50 rpm by turning the
screw in or out. Check speed with a tachometer.
3. Turn the idle mixture screw slowly clockwise (lean
mixture) until engine speed just starts to decrease.
Note the needle’s position.
Now turn the idle mixture screw slowly
counterclockwise (rich mixture) until engine speed
just starts to increase. Note the needle’s position
Set the screw midway between the rich and lean
settings.
4. After the idle mixture has been adjusted, hold the
governor lever so the throttle lever is in the idle
position (against the idle stop screw) and readjust
the idle stop screw to bring speed to 1200± 50 rpm.
5. With the governor control lever in the governed idle
position (no tension on the high-speed spring) bend
the idle spring anchor tang to attain a governed idle
speed of 1400± 50 rpm.
.
Shown with Air Cleaner Removed
Figure 32
1. Governed idle spring anchor tang
2.
High-speed spring anchor tang
6. Move the throttle control to FAST. Bend the high-
speed spring anchor tang to attain a high speed of
3200 + 50 –100 rpm.
REPLACING SPARK PLUGS
(Fig. 33)
Replace spark plugs after every 800 operating hours.
Recommended air gap is 7.5 mm (0.030”).
Correct spark plug to use is a Champion RC 12YC.
Note : Spark plugs usually last a long time; however,
plugs should be removed and checked whenever the
engine malfunctions,
1. Clean the area around spark plugs so foreign matter
cannot fall into the cylinder when a spark plug is
removed.
2. Pull spark plug wires off spark plugs and remove
the plugs from the cylinder head.
3. Check the condition of the side and center
electrodes and the center electrode insulator to
assure there is no damage.
IMPORTANT: A cracked, fouled, dirty or
otherwise malfunctioning spark plug must be
replaced. Do not sand blast, scrape, or clean
electrodes by using a wire brush because grit
may eventually release from the plug and fall