Adjusting The Chain Tension - Toro 51870 Manual

1. Run the pole saw a few
inches from a surface.
3. If oil is not flowing, ensure that there is oil in the
tank and that the area under the side cover is
clean; refer to Checking the Oil Level and Adding
Bar and Chain Oil (page 17)
Guide Bar, Chain, and Drive Sprocket (page
Adjusting the Chain
Tension
Service Interval: Before each use or daily
After each battery drain cycle
Ensure that the chain is properly tensioned.
A loose chain shortens the life of the drive sprocket
and the guide bar and may cause the chain to fall off.
An overtightened chain overheats the guide bar and
chain, causing rapid wear, and may burn out the motor
or break the chain.
The chain tension is correct when you are able to use
a gloved hand to pull the chain smoothly around the
guide bar. The chain should remain in contact with
the bottom edge of the guide bar.
Also, check the chain tension of a new chain after a
few cuts; a new chain usually stretches and requires
adjustment after a few cuts.
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.
Figure 16
2. If the oil is flowing, it will
spray off the chain and
accumulate.
and Servicing the
1. Place the pole saw on a level surface and
remove the battery pack; refer to
Battery Pack (page
2. Allow the saw chain to cool.
Important:
may contract as it cools, resulting in an
overtightened chain.
3. Inspect the guide bar for bends or damage,
replace if necessary.
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4. Turn the bar cover knob counterclockwise to
loosen the bar cover, but do not remove it
(Figure 17).
19).
1. Bar cover knob
18
Removing the
15).
Do not tension a hot chain; it
Figure 17
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