Poulan PP4218A Instruction Manual - Page 4

Kickback, Reduce The Chance Of, Maintaincontrol - chain

Page 4 highlights

S Move at least 10 feet (3 meters) from fueling site before starting engine. S Turn the engine off and let saw cool in a non-combustible area, not on dry leaves, straw, paper, etc. Slowly remove fuel cap and refuel unit. S Store the unit and fuel in an area where fuel vapors cannot reach sparks or open flames from water heaters, electric motors or switches, furnaces, etc. KICKBACK WARNING: Avoid kickback which can result in serious injury. Kickback is the backward, upward or sudden forward motion of the guide bar occurring when the saw chain near the upper tip of the guide bar contacts any object such as a log or branch, or when the wood closes in and pinches the saw chain in the cut. Contacting a foreign object in the wood can also result in loss of chain saw control. S Rotational Kickback can occur when the moving chain contacts an object at the upper tip of the guide bar. This contact can cause the chain to dig into the object, which stops the chain for an instant. The result is a lightning fast, reverse reaction which kicks the guide bar up and back toward the operator. S Pinch-Kickback can occur when the the wood closes in and pinches the moving saw chain in the cut along the top of the guide bar and the saw chain is suddenly stopped. This sudden stopping of the chain results in a reversal of the chain force used to cut wood and causes the saw to move in the opposite direction of the chain rotation. The saw is driven straight back toward the operator. S Pull-In can occur when the moving chain contacts a foreign object in the wood in the cut along the bottom of the guide bar and the saw chain is suddenly stopped. This sudden stopping pulls the saw forward and away from the operator and could easily cause the operator to lose control of the saw. Avoid Pinch- Kickback: S Be extremely aware of situations or obstructions that can cause material to pinch the top of or otherwise stop the chain. S Do not cut more than one log at a time. S Do not twist the saw as the bar is with- drawn from an undercut when bucking. Avoid Pull- In: S Always begin cutting with the engine at full speed and the saw housing against wood. S Use wedges made of plastic or wood. Never use metal to hold the cut open. Kickback Path REDUCE THE CHANCE OF KICKBACK S Recognize that kickback can happen. With a basic understanding of kickback, you can reduce the element of surprise which contributes to accidents. S Never let the moving chain contact any object at the tip of the guide bar. S Keep the working area free from obstructions such as other trees, branches, rocks, fences, stumps, etc. Eliminate or avoid any obstruction that your saw chain could hit while you are cutting. When cutting a branch, do not let the guide bar contact branch or other objects around it. S Keep your saw chain sharp and properly tensioned. A loose or dull chain can increase the chance of kickback occurring. Follow manufacturer's chain sharpening and maintenance instructions. Check tension at regular intervals with the engine stopped, never with the engine running. Make sure the bar nuts are securely tightened after tensioning the chain. S Begin and continue cutting at full speed. If the chain is moving at a slower speed, there is greater chance of kickback occurring. S Cut one log at a time. S Use extreme caution when re-entering a previous cut. S Do not attempt cuts starting with the tip of the bar (plunge cuts). S Watch for shifting logs or other forces that could close a cut and pinch or fall into chain. S Use the Reduced- Kickback Guide Bar and Low- Kickback Chain specified for your saw. MAINTAIN CONTROL Stand to the left of the saw Never reverse hand positions Thumb on underside of handlebar Elbow locked Clear The Working Area Avoid Obstructions Thumb on underside of handlebar S Keep a good, firm grip on the saw with both hands when the engine is running and don't let go. A firm grip will help you reduce kickback and maintain control of the saw. Keep the fingers of your left hand encircling and 4

  • 1
  • 2
  • 3
  • 4
  • 5
  • 6
  • 7
  • 8
  • 9
  • 10
  • 11
  • 12
  • 13
  • 14
  • 15
  • 16
  • 17
  • 18
  • 19
  • 20
  • 21
  • 22
  • 23
  • 24
  • 25
  • 26
  • 27
  • 28
  • 29
  • 30
  • 31
  • 32
  • 33
  • 34
  • 35
  • 36
  • 37
  • 38
  • 39
  • 40
  • 41
  • 42
  • 43
  • 44
  • 45
  • 46
  • 47
  • 48
  • 49
  • 50
  • 51
  • 52
  • 53
  • 54
  • 55
  • 56
  • 57
  • 58
  • 59
  • 60
  • 61
  • 62
  • 63
  • 64
  • 65
  • 66
  • 67
  • 68

4
S
Moveatleast10feet(3meters)fromfuel-
ing site before starting engine.
S
Turn the engine off and let saw cool in a
non-combustible area, not on dry leaves,
straw, paper, etc. Slowly remove fuel cap
and refuel unit.
S
Storetheunitandfuelinanareawherefuel
vapors cannot reach sparks or open
flamesfromwaterheaters,electricmotors
orswitches,furnaces,etc.
KICKBACK
WARNING:
Avoid kickback which
can result in serious injury.
Kickback
is the
backward, upward or sudden forward motion
of the guide bar occurring when the saw chain
neartheuppertipoftheguidebarcontactsany
object such as a log or branch, or when the
wood closes in and pinches the saw chain in
thecut.Contactingaforeignobjectinthewood
can also result in loss of chain saw control.
S
Rotational Kickback
can occur when the
movingchaincontactsanobjectattheupper
tip of the guide bar. This contact can cause
the chain to dig into the object, which stops
the chain for an instant. The result is a light-
ning fast, reverse reaction which kicks the
guide bar up and back toward the operator.
S
Pinch-Kickback
can occur when the the
wood closes in and pinches the moving saw
chaininthecutalongthetopoftheguidebar
and the saw chain is suddenly stopped. This
sudden stopping of the chain results in a re-
versal of the chain force used to cut wood
and causes the saw to move in the opposite
direction of the chain rotation. The saw is
driven straight back toward the operator.
S
Pull-In
can occur when the moving chain
contacts a foreign object in the wood in the
cutalongthebottomoftheguidebarandthe
saw chain is suddenly stopped. This sudden
stopping pulls the saw forward and away
from the operator and could easily cause the
operator to lose control of the saw.
Avoid Pinch-Kickback:
S
Be extremely aware of situations or ob-
structionsthatcancausematerialtopinch
thetopoforotherwisestopthechain.
S
Donotcutmorethanonelogatatime.
S
Do not twist the saw as the bar is with-
drawnfromanundercutwhenbucking.
AvoidPull-In:
S
Alwaysbegincuttingwiththeengineatfull
speedandthesawhousingagainstwood.
S
Use wedges made of plastic or wood.
Neverusemetaltoholdthecutopen.
Kickback Path
Clear The
WorkingArea
AvoidObstructions
REDUCE THE CHANCE OF
KICKBACK
S
Recognize that kickback can happen.
With a basic understanding of kickback,
you can reduce the element of surprise
which contributes to accidents.
S
Neverletthemovingchaincontactanyob-
ject at the tip of the guide bar.
S
Keeptheworkingareafreefromobstruc-
tionssuchasothertrees,branches,rocks,
fences, stumps, etc. Eliminate or avoid
anyobstructionthatyoursawchaincould
hit while you are cutting. When cutting a
branch, do not let the guide bar contact
branch or other objects around it.
S
Keep your saw chain sharp and properly
tensioned. A loose or dull chain can in-
creasethechanceofkickbackoccurring.
Follow manufacturer’s chain sharpening
andmaintenanceinstructions.Checkten-
sion at regular intervals with the engine
stopped, never with the engine running.
Makesurethebarnutsaresecurelytight-
ened after tensioning the chain.
S
Beginandcontinuecuttingatfullspeed.If
the chain is moving at a slower speed,
thereisgreaterchanceofkickbackoccur-
ring.
S
Cut one log at a time.
S
Use extreme caution when re-entering a
previous cut.
S
Donotattemptcutsstartingwiththetipof
thebar(plungecuts).
S
Watch for shifting logs or other forces that
could close a cut and pinch or fall into chain.
S
Use the Reduced-Kickback Guide Bar
and Low-Kickback Chain specified for
your saw.
MAINTAINCONTROL
Neverreverse
hand positions
Standtothe
leftofthesaw
Thumb on
underside of
handlebar
Thumb on underside of
handlebar
Elbow locked
S
Keep a good, firm grip on the saw with both
hands when the engine is running and don’t
let go. A firm grip will help you reduce kick-
back and maintain control of the saw. Keep
the fingers of your left hand encircling and