Check engine manual for correct plug type and gap specifications.
Nozzle Door Height Adjustment
The nozzle adjustment levers are located on each side of the nozzle door.
The nozzle door can be adjusted to one of five positions, ranging from
1/2” to 3” ground clearance, to provide best performance.
a.
Push adjustment lever out away from nozzle.
b.
Fix the gear opening to the bar on the nozzle, than fastened with nut.
See Figure 8
Figure 8
NOTE
：
Height must be adjusted equally. In general, raise the nozzle to
vacuum a thick layer of leaves and lower the nozzle for smooth
surface.
。
Clean the Flail Screen
If the discharge area becomes clogged, remove the flail screen and clean
area as follows.
a.
Stop the engine. Make sure the chipper/shredder vacuum has come to
a complete stop.
b.
Disconnect spark plug wire from spark plug and ground against the
engine.
c.
Remove and set aside the vacuum bag.
d.
Remove the four self-tapping screws from the bottom of the
discharge chute. Remove the hex bolt, saddle washer and hex nut
from the top and remove the discharge chute assembly.
e.
Remove the two hex bolts and hex nuts which extend through the
impeller housing. Lift the flail screen from inside the housing. See
Figure 9.
Figure 9
f.
Clean the flail screen by scraping and /or washing with water, and reinstall
