Inspecting And Replacing The Spark Plug; Adjusting The Traction Drive Belt - Toro 722 Power Throw Operator's Manual

Figure 34
1. Flange-head bolts
4. Lightly lubricate the machine with light oil as shown
in Figure 35.
Figure 35
Important: Do not excessively oil the machine;
extra oil may enter the traction drive and cause
the traction drive belt to slip.
5. Wipe up any excess oil.
6. Grease the machine as shown in Figure 35.
7. Wipe up any excess grease.
8. Install the bottom cover.
9. Return the machine to its upright position.
Inspecting and Replacing the
Spark Plug
Service Interval: Every 100 hours
Use a Champion QC12YC or equivalent spark plug.
Check and gap the spark yearly, and replace the plug
if necessary.
1. Clean around the base of the spark plug.
2. Remove the spark plug.
3. Examine the spark plug and replace it if it is cracked,
fouled, dirty, or if the electrodes are worn.
Important: Do not clean the electrodes because
grit could enter the cylinder and damage the
engine.
4. Set the gap between the electrodes on the spark plug
at 0.030 inch (0.76 mm) (Figure 36).
1. 0.030 inch (0.76 mm)
5. Install the spark plug by hand and then torque it to
15 ft-lb (20.4 N-m).
Note: If you do not have a torque wrench, tighten
the plug firmly.
Adjusting the Traction Drive
Belt
Service Interval: After the first hour
Before each use or daily
Adjust the traction drive belt after the first operating
hour, after every 5 operating hours thereafter, and when
the speed selector lever shifts properly but the machine
does not drive in the forward or reverse speeds.
1. Check and adjust the traction drive as described in
Installing the Traction Rod in Setup.
2. If the problem persists after adjusting the linkage,
contact an Authorized Service Dealer.
22
Figure 36