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520 Single Stage Snowthrower
5/2005
9
Auger Control Cable
Adjustment
The length of the auger control cable is adjustable.
However, it will seldom be necessary to change the
cable length since the operating tension on the drive
belt is maintained by the spring on the end of the cable.
If the auger turns too slowly under heavy load or
momentary squealing of drive belt is heard when enter-
ing heavy snow, pressure applied to drive belt by idler
pulley must be increased by reducing the slack in the
cable.
If the auger continues to turn when the auger con-
trol is released, the cable is too tight. The pressure
applied to the drive belt must be eliminated by increas-
ing the amount of slack to the cable adjustment.
Checking the Adjustment
1. Remove the Cover. (See Figures 9 & 10.)
2. Measure the spring while the auger control on the
handle is disengaged. Record this measurement.
3. Pull the auger control against the handle and again
measure the spring. Record this measurement.
4. Compare the two measurements. The measure-
ment obtained with the spring extended should be
7/16 inch (11 mm) greater than with the spring un-
extended.
Adjusting the Cable
1. Remove the engine cover.
2. Locate and loosen the lower locknut securing the
auger control cable (shown in Figure 12).
3. To change the slack in the cable, turn the upper
locknut slightly just until the slack between the
spring and the exposed cable has been elimi-
nated.
4. Tighten the lower locknut.
5. Reinstall the engine cover.
6. Test the units to make certain that the cable has
been adjusted properly (see “Testing the Auger
Control Cable “ below).
Testing the Auger Control Cable
Start the snow thrower engine and pull back on auger
control to operate auger. Release auger control and
check to be sure auger stops turning.
If auger continues to turn after auger control is
released, the cable is too tight and will have to be
adjusted to make it longer. Cable must be slightly
slack when auger control is released (away from
handle).
Figure 12. Auger Control Cable
Locknuts
Spring
WARNING
Use extreme care when making adjust-
ments that require engine to be running.
Keep hands, feet, hair and loose clothing
away from any moving parts.
WARNING
Make certain the cable is NOT placing any ten-
sion on the spring.
If the cable places tension on
the spring, the auger may turn when the control
has not been engaged.