POWXQG4070
EN
Copyright © 2014 VARO
P a g e
|
11
www.varo.com
Warning: activate the chain brake slowly and deliberately. Keep the chain
from touching anything; don t let the saw tip forward.
Chain should stop abruptly. When it does, immediately release the throttle trigger.
Warning: if chain does not stop, turn engine off and take your unit to the
nearest authorized service center for service.
If chain brake functions properly, turn the engine off and return the chain brake to the
disengaged position.
9.7
Saw chain / bar lubrication
Adequate lubrication of the saw chain is essential at all times to minimize friction with the
guide bar. Never starve the bar and chain of oil. Running the saw with too little oil will
decrease cutting efficiency, shorten saw chain life, cause rapid dulling of chain, and cause
excessive wear of bar from overheating. Too little oil is evidenced by smoke, bar discoloration
or pitch build-up.
Note: saw chain stretches during use, particularly when it is new, and it will
occasionally be necessary to adjust and tighten it. New chain will require
adjustment after about 5 minutes of operation.
9.8
Automatic oiler
Your chain saw is equipped with an automatic clutch driven oiler system. The oiler
automatically delivers the proper amount of oil to the bar and chain. As the engine speed
increases, so does the oil flow to the bar pad.
Do not adjust the chain lubrication system unless the motor has been
turned off.
The chain lubrication system has been preset to medium oil flow at the factory. The flow can
be adjusted if necessary.
To adjust the oil flow, turn the adjusting screw at the bottom side of the housing (Fig 11)
(19)
Turning it clockwise reduces the oil flow, while turning it counterclockwise increases the oil.
9.9
General cutting instructions
9.9.1
Felling
Felling is the term for cutting down a tree. Small trees up to 6-7 inches (15-18cm) in diameter
are usually cut in a single cut. Larger trees require notch cuts. Notch cuts determine the
direction the tree will fall.
Felling a tree:
Warning: a retreat path (A) should be planned and cleared as necessary
before cuts are started. The retreat path should extend back and diagonally
to the rear of the expected line of fall, as illustrated in fig. 12a
Caution: if felling a tree on sloping ground, the chain saw operator should
keep on the uphill side of the terrain, as the tree is likely to roll or slide
downhill after it is felled.
