Echo CH911DH Owners Manual v.5 - Manual (Page 21)

9 INCH CHIPPER 17
ENGLISH
SERVICE & MAINTENANCE
BEFORE INSPECTINg OR SERVICINg ANy PART OF THIS MACHINE, SHuT OFF POWER SOuRCE,
AND MAkE SuRE All MOVINg PARTS HAVE COME TO A COMPlETE STOP.
WaRNING
Check pulley alignment with a straight edge and adjust 6.
engine if needed.
Check belt tension and adjust if needed. The belt 7.
deflection at the center of the belt should be 7/16"
when a 20 lb. load is placed against the belt (see Figure
5.5).
Reinstall hydraulic pump belt. Readjust hydraulic 8.
pump belt tension by sliding the hydraulic pump in the
mounting slots. Tighten bolts.
Replace belt guard. 9.
Depress belt engagement pedal, start engine, engage 10.
drive belt, and test unit. Readjust pulleys and belt
tension if needed.
5.9 REpLaCING DRIvE bELT
Shut off engine. 1.
Remove drive belt shield. 2.
Remove the hydraulic pump belt by loosening the bolts 3.
on the hydraulic pump (Figure 5.4).
SPAN LENGTH
FORCE
20 LBS
7/16" DEFLECTION
Figure 5.5, Belt tension
Figure 5.4, Drive belt
Check the condition of the drive belt annually or after every
25 hours of operation, whichever comes first. If the belt is
cracked, worn, frayed, or stretched, replace it. Replace
belt with original banded belt type only. Do not use single
type belts.
To replace the belt:
5.10 CHaNGE oIL
Check the oil level before each use. Change oil as directed in the engine owner's manual.
Take the tension off the drive belt by depressing the belt 4.
engagement pedal. Remove the drive belt from pulleys.
Install the new drive belt on pulleys. 5.