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17

Special Cold Weather Care

If a chain is tensioned in very cold weather, it will sag

when it reaches the normal operating temperature. Always
keep the chain tension tight while cutting and loosen it
after operation, or it will cool, contract and break, possibly
damaging the bar, the crankshaft, and the bearings.

At extremely low temperatures, normal chain oil will

“set” (become too thick to flow).  A winter grade bar and
chain oil may be used.

Increase the oil flow while cutting in cold weather.

Cutting frozen wood increases friction on both the cutters
and tie straps, and can cause them to crack.

WARNING

Kickback

Kickback may occur when the moving saw chain near
the upper quadrant of the bar nose contacts a solid
object or is pinched. The reaction of the cutting force 
of the chain causes a rotational force on the chain saw 
in the direction opposite to the chain movement. This
may fling the bar up and back in an uncontrolled arc
mainly in the plane of the bar. Under some cutting
circumstances the bar moves towards the operator,
who may suffer severe or fatal injury.
To reduce the risk of kickback:
• Hold the chain saw firmly with both hands.
• Don’t overreach.
• Don’t let the nose of the guide bar contact a log, a

branch, the ground, or any other obstruction.

• Cut at high engine speeds.
• Don’t cut above shoulder height.
• Follow manufacturer’s sharpening and maintenance

instructions for the saw chain.

• Use devices such as low kickback chain, which may

help to reduce the hazards associated with kickback.

16

Condition:

Peening or premature flattening on bottom of cutters
and tie straps.

Cause:

Loose chain tension. Dull cutters. Lack of lubrication.
Chain has been forced to cut.

Remedy:

Chain must be replaced if badly worn. Check chain
tension and cutter sharpness more frequently.

Condition:

Burring and peening in notch of tie strap.

Cause:

Worn chain sprocket.

Remedy:

Replace sprocket and chain.

STIHL Sharp Advice rdsp 110606  11/6/06  4:16 PM  Page 19

Содержание OILOMATIC saw chain

Страница 1: ...ve both money and cutting time This brochure is designed to cover only chain bar and sprocket maintenance For general chain saw care always refer to your Owner s Manual and your servicing chain saw de...

Страница 2: ...ur Owner s Manual carefully before using your saw In the U S A STIHL has developed a color code system using green and yellow to help you select a powerhead bar and chain combination that complies wit...

Страница 3: ...er development of the OILOMATIC system is the oil reservoir next to the channel on 3 8 extended pitch 325 063 3 8 063 chain provides more oil to distribute along the chain groove and guide rails as th...

Страница 4: ...bar groove Retighten bar mounting nuts while still holding up the bar nose and then make a final tension check Saw Chain Care 6 Perform a lubrication checkup Check the oil level every time you refuel...

Страница 5: ...for approximately three minutes If your automatic oiler is adjustable initially increase the flow for a short time Sharpening Saw Chain Trying to cut wood with a dull chain means a loss of power and...

Страница 6: ...h at the nose If the depth is less than it should be the nose should be replaced Check often to make sure that the tie straps are riding evenly on the guard rails Lightly file burrs to remove them App...

Страница 7: ...Drive sprockets must always match the chain which is being used A servicing dealer is best equipped to match and replace corresponding chains and sprockets If the wear marks on the sprocket are signi...

Страница 8: ...procket Remedy Replace sprocket If heavily damaged replace chain 14 Condition Hook in side cutting edge or top cutting edge feathered Cutters dulling quickly Cause File held too low or diameter of fil...

Страница 9: ...ement This may fling the bar up and back in an uncontrolled arc mainly in the plane of the bar Under some cutting circumstances the bar moves towards the operator who may suffer severe or fatal injury...

Страница 10: ...ecommendations Chain Type File File Profile 1 4 STIHL Rapid Micro 5 32 Round 4 0 mm 3 8 STIHL Picco Micro 5 32 Round Narrow 4 0 mm 3 8 STIHL Picco Micro 5 32 Round 4 0 mm 325 STIHL Rapid Micro or 3 16...

Страница 11: ...21 Date of Chain Sprocket and Bar Replacement Chain Chain Sprocket Bar 20 Notes STIHL Sharp Advice rdsp 110606 11 6 06 4 16 PM Page 23...

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