Figure 18
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
flails seem underpowered, check the belt
tension
1.
Stop the machine on a level surface, shut off the
engine, disconnect the spark-plug wire, and raise the
flail blades to the highest position.
2.
Remove the 4 bolts securing the belt cover to the left
side of the machine and remove the cover (
).
Figure 19
1.
Belt
3.
Bolts
2.
Cover
3.
Check the tension of the belt (
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
.
5.
Install the belt cover before operating the machine.
17
