Toro PowerPlex 51880, Operator'S Manual

Page: 18 / 24

g192116
Figure 30
1. Oil passage 3. Spacer
2. Clip 4. Drive sprocket
6. Inspect the drive sprocket; if it is excessively
worn or damaged, replace it.
7. Check the oil passage ( Figure 30 ) for debris and
clean the area if necessary.
8. Install the drive sprocket, spacer, and clip.
9. Clean the guide bar and chain; use a wire or a
small flat-head screwdriver to remove dirt and
debris from the groove along the edge of the
guide bar, starting from the sprocket on the front
end and moving rearward.
If the guide bar or grooves are damaged or the
sprocket on the front end does not rotate freely,
replace the guide bar; if the chain is excessively
worn or damaged, replace it.
10. Place the chain around the drive sprocket on
the front end of the guide bar,
with the cutting
edge of the chain teeth on the top of the bar
facing forward
as shown in the diagram on the
side of the chain saw ( Figure 31 C).
g192112
Figure 31
11. Feed the chain around the guide bar and align
the chain teeth into the groove of the bar.
12. Position the open loop of the chain (not on the
guide bar) around the drive sprocket on the
chain saw and install the guide bar and attached
chain onto the chain saw as shown in
Figure 31 .
Important:
Ensure that the chain adjusting
stud is inserted into the hole indicated by the
arrow in
Figure 31 C. You may need to rotate
the chain tensioning knob to fit the stud into
the hole in the guide bar.
13. Install the cover and the wing nut, but do not
fully tighten the wing nut (
Figure 31 D). Fold the
wing-nut tab.
14. Adjust the chain tension; refer to Adjusting the
Chain Tension (page 17) .
18