Servicing The Guide Bar, Chain, And Drive Sprocket - Toro 51870 Manual

5. Adjust the chain tension using the chain
tensioning screw (Figure
the side cover to the pole saw by turning the
bar cover knob clockwise before checking the
tension (Figure 17).
•
To tighten the chain, turn the chain
tensioning screw clockwise.
•
To loosen the chain, turn the chain
tensioning screw counterclockwise.
Figure 18
1. Chain tensioning screw
Adjust the chain tension until the chain touches
the bottom edge of the guide bar, then pull the
chain away from the bottom edge of the guide
bar; a properly adjusted chain can only be pulled
3.2 to 6.4 mm (1/8 to 1/4 inch) away from the
guide bar, and snaps back on release.
Note:
While adjusting the chain tension, lift up
the tip of the guide bar with a gloved hand to
ensure the guide bar does not sag and affect
chain tension.
6. Use a gloved hand to pull the chain around the
guide bar. A properly tensioned chain should
move smoothly and remain in contact with the
bottom edge of the guide bar.
7. If the chain is not properly tensioned, repeat
steps 4 through 7.
18), and then secure
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Servicing the Guide Bar,
Chain, and Drive Sprocket
Yearly or before storage
DANGER
Contact with the pole saw teeth can cause
serious personal injury.
• Remove the battery pack before adjusting
or maintaining the pole saw.
• Always wear gloves when adjusting or
maintaining the pole saw.
1. Place the pole saw on a flat surface and remove
the battery pack; refer to
Pack (page 15).
2. Remove the side cover; turn the bar cover knob
counterclockwise until the knob is removed and
then remove the side cover
1. Bar cover knob
2. Side cover
3. Chain
4. Chain adjusting stud slot
5. Guide bar slot
3. Loosen the chain by turning the chain-tightening
screw counterclockwise
4. Separate the chain from the guide bar and set
them aside.
5. Clean any debris from the area under the side
cover.
6. Inspect the drive sprocket; if it is excessively
worn or damaged, replace it; contact your
authorized service dealer.
7. Check the oil outlet
clean the area if necessary.
19
Removing the Battery
(Figure 19).
Figure 19
6. Drive sprocket
7. Guide bar stud
8. Oil outlet
9. Chain adjusting stud
(Figure 18).
(Figure 19) for debris and
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