Toro 38720, Operator'S Manual

Page: 15 / 20

Replacing the Spark Plug
Service Interval: Every 100 hours—Replace the
spark plug.
WARNING
Replacing the spark plug while the engine is
hot can result in burns.
Wait until the engine is cool to replace the
spark plug.
Use a Toro spark plug or equivalent (Champion®
RN9YC or NGK BPR6ES).
1. Remove the boot ( Figure 22 ).
g030123
Figure 22
1. Spark-plug boot
2. Clean around the base of the spark plug.
3. Remove and discard the old spark plug.
Note:
You will need a ratchet wrench extension
to remove the spark plug.
4. Set the gap between the electrodes on a new
spark plug at 0.76 mm (0.030 inch) as shown
in
Figure 23 .
g001029
Figure 23
1. 0.76 mm (0.030 inch)
Adjusting the Auger Cable
Service Interval: After the first 2 hours
Yearly
If the drive belt slips or squeals under heavy load,
adjust the auger cable.
1. Loosen the nut on the lower cable clamp, but do
not remove it (
Figure 24 ).
g030444
Figure 24
1. Nut 3. Connector
2. Cable 4. Spring
2. Pull the cable up to remove some slack ( Figure
24 ).
Important:
Do not remove all the slack
from the cable. Removing all the slack from
the cable prevents the auger from stopping
properly.
3. Hold the cable in place and tighten the nut
(
Figure 24 ).
Adjusting the Transmission
Cable
Service Interval: After the first 2 hours
Yearly
If the wheels easily stall out, or if the wheels drive
without engaging the self-propel handle, adjust the
transmission cable.
1. Loosen the nut on the upper cable clamp, but do
not remove it (
Figure 25 ).
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