Troy-Bilt 071 - Manual (Page 16)

16
Sharpening Or Replacing Chipper
Blade
NOTE: When tipping the unit, empty the oil and fuel tank
and keep engine spark plug side up.
1. Disconnect and ground the spark plug wire to
retaining post.
2. Remove hose assembly and bag assembly.
3. Remove the three hex cap screws holding the hose
hanger bracket and chipper chute to the upper hous-
ing. See Figure 19.
4. Remove the front hubcaps, flange lock nuts, front
wheels, and wave washers that attach to the pivot arm
assemblies. See Figure 20.
5. Remove the shoulder screws, thrust washers, and bell
washers that go through the pivot arms to the front
support brace. The front support brace and lock nut
can be removed at this time as well.
6. Remove the four screws on the upper housing that
secure the nozzle cover. See Figure 21.
7. Carefully tilt and support the unit up to provide access
underneath to the nozzle mounting hardware and
impeller. Remove the three shoulder bolts securing
the black plastic nozzle to the lower housing. Refer to
Figure 22.
8. Tilt top of black plastic nozzle toward the engine to
remove.
Figure 19
&RONT
0IVOT
"ELL
4HRUST
7AVE
7ASHER
7HEEL
,OCK
3HOULDER
Figure 0
Figure 1
.OZZLE
Maintaining
Your Yard
Vacuum
NOTE: When tipping
unit, empty the oil and
fuel tank and keep
engine spark plug side
up..
Figure