Belt Maintenance; Checking The Belt Tension - Toro 23511 Operator's Manual

Figure 20
1. Center electrode insulator
2. Side electrode
3. Air gap (not to scale)
6. Carefully install the spark plug by hand (to avoid cross
threading) until it is hand tight.
7. Tighten the spark plug an additional 1/2 turn if it is
new; otherwise, tighten it an additional 1/8 to 1/4 turn.
Important: A loose spark plug can become very
hot and can damage the engine; overtightening a
spark plug may damage the threads in the cylinder
head.
8. Connect the wire to the spark plug.

Belt Maintenance

Checking the Belt Tension

Service Interval: Before each use or daily—Check the belt
tension. If the engine is working but
the cutting blades seem underpowered,
check the belt tension.
1. Stop the machine on a level surface, stop the engine
by releasing the operator presence bail, disconnect the
spark plug wire, and raise the cutting blades to the
transport position.
2. Remove the 4 bolts securing the belt cover to the left
side of the machine and remove the cover (Figure 21).
1. Belt
2. Cover
3. Check the tension of the belt (Figure 21).
Note: The belt should not flex more than a 12 mm
(1/2 inch) with moderate finger pressure applied to the
span just above the machine frame.
4. If the belt tension is loose, refer to Adjusting the Belt
Tension (page 20).
5. Install the belt cover before operating the machine.
19
Figure 21
3. Bolts