Echo 74520 Owners Manual v.1 - Manual (Page 22)

19
Blades are sharp; avoid contact with
chipper blades.
Check the condition of the drive belt annually or after every 25 hours of operation,
whichever comes first. Replace cracked, frayed, worn, or stretched drive belt. Only
replace drive belt with original banded type belt, do not use single type belts. To adjust the
drive belt, proceed as follows:
1. Depress foot clutch pedal.
2. Shut engine off.
3. Disconnect battery cables.
4. Remove large belt guard (three 5/16 inch bolts).
5. Adjust the eyebolt that anchors the idler spring to adjust the belt tension.
6. Tighten the eyebolt until the belt deflection at the center of the belt is 7/16" when a 20
lb. load is placed against the belt (see figure 4).
7. Replace belt guard.
8. Start engine and test belt for looseness.
9. Replace the belt if no adjustment is left.
1. Remove large belt guard (three 5/16" bolts).
2. Loosen eye bolt.
3. Push belt idler pulley off drive belt.
1/32 -1/8"
Rotor
Chipper
Blade
Anvil
Adjustment
Bolt
Figure 4
(20 lbs.)
7/16" Deflection
Figure 3
Service and Maintenance-Cont.
Adjusting Drive Belt
Replacing Drive Belt