Echo DL10570 Owners Manual v.1 - Manual (Page 21)

Debris Loader Owner’s Manual 17
SERVICE AND MAINTENANCE
Force of
20 lbs.
Span Length 7/16” Deflection
Figure 17, Belt tension
b. Locate the engine plate push off bolt located above
the gas tank. If needed, the gas tank can be re-
moved for better access to the push off bolt.
c. Loosen the jam nut (Figure 16).
d. Tighten the push off bolt to move the engine away
from the rotor housing until the belt deflection is
7/16" when a 20 lb. load is placed against the belt
(Figure 17).
e. Tighten the four carriage bolts securing the engine
plate to the trailer.
f. Tighten the jam nut to ensure the proper deflection
is maintained.
8. Replace the belt if the engine cannot be adjusted any
further and the idler arm comes in contact with the
engagement lever rollers when in the run position.
9. Adjust the lower belt guide so there is 1/8" clearance
between the belt and the belt guide.
10. Move the engagement lever to the start position.
11. Reinstall the belt shield.
12. Reconnect spark plug wire.
Figure 16, Jam nut and push off bolt
5.4 ADJUSTING DRIVE BELT (670cc MODEL)
Check the condition of the drive belt annually or after every
25 hours of operation, whichever comes first. Replace a
cracked, frayed, worn or stretched drive belt. To replace
the drive belt, proceed as follows:
1. Move the engagement lever to the start position.
2. Shut engine off and disconnect spark plug wire.
3. Remove the belt shield by removing the 11 bolts secur-
ing the belt shield to the rotor weldment.
4. Loosen and remove the idler pulley (Figure 18).
5. Loosen the two mounting bolts located at both ends
of the lower belt guide.
6. Loosen the four carriage bolts attaching the engine
plate to the trailer.
7. To release the tension on the belt, loosen the jam nut
and engine plate push off bolt located above the gas
tank. If needed, the gas tank can be removed for better
access to the jam nut and push off bolt.
8. Remove the old belt and install the new belt.
9. Reinstall the idler pulley.
10. Move the engagement lever to vacuum position.
11. Adjust the drive belt tension so that the belt deflection
is 7/16" when a 20 lb. load is placed against the belt
(Figure 17).
5.5 REPLACING DRIVE BELT (670cc MODEL)
Figure 18, Drive belt, DL12670 (75124)
Before inspecting or servicing any part of this machine,
shut off power source, disconnect spark plug wire from
spark plug and make sure all moving parts have come
to a complete stop.
WARNING