Servicing The Guide Bar, Chain, And Drive Sprocket - Toro 51850 Manuel De L'utilisateur

Servicing the Guide Bar,
Chain, and Drive Sprocket
Yearly or before storage
DANGER
Contact with the chain saw teeth can cause
serious personal injury.
• Remove the battery pack before adjusting
or maintaining the chain saw.
• Always wear gloves when adjusting or
maintaining the chain saw.
1. Place the chain saw on a flat surface and
remove the battery pack; refer to
Battery Pack (page
2. Remove the side cover by loosening the 2
captive nuts that secure the cover
Note:
The captive nuts do not separate from
the side cover; loosen them until the cover can
be removed.
Figure 31
1. Cover
2. Captive nut
3. Loosen the chain by turning the chain-tightening
screw counterclockwise
4. Separate the chain from the guide bar and set
them aside.
5. Remove the clip and drive sprocket from the
chain saw (Figure
6. Clean any debris from the area under the side
cover.
7. Inspect the drive sprocket; if it is excessively
worn or damaged, replace it.
8. Install the drive sprocket and clip.
9. Check the oil outlet
clean the area if necessary.
Removing the
17).
(Figure
3. Chain tensioning screw
4. Multitool
(Figure 31).
32).
(Figure 32) for debris and
1. Drive sprocket
31).
2. Clip
10. 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.
Ensure that the oil channel in the bar that aligns
with the oil outlet on the chain saw is clean so
that oil can flow freely to the chain
g315844
Internal sections of the guide bar shown
1. Ensure that this channel
connecting to the oil outlet
is clean.
11. Inspect the guide bar and chain; if the bar
is bent, the grooves are damaged, or if the
sprocket on the front end does not rotate freely,
replace the guide bar; if the chain is excessively
worn or damaged, replace it.
12. Install the guide bar and chain; refer to
the Guide Bar and Chain (page
13. Ensure that oil is flowing to the chain; refer to
Checking the Flow of Bar and Chain Oil (page
20).
22
Figure 32
3. Oil outlet
(Figure
Figure 33
2. Ensure that the bar
sprocket is clean and
rotates freely.
23).
g315855
33).
g315856
Installing