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Technical Information · issue 25 of 1997

3/8" Oilomatic Rapid-Micro chain: Optimized cuttin

IssueTI 25/1997

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TI 25/1997 page 1
Technical Information

                                                                             25.97

3/8" Oilomatic Rapid-Micro chain  -  Type 3989, 3990, 3991

Optimized cutting behavior

A further improvement in cutting behavior has

been achieved by modifying the cutters of 3/8"
Oilomatic Rapid-Micro chains. These chains
now have the following features:

• Designed to improve cutting performance for
   the whole of the chain’s service life

• Less sensitive to sharpening errors
• More accurate straight-line cutting

The dimensional change to the modified saw
chains is not visible to the naked eye. The new

chains can be identified by a code stamped on the
tie straps. The first optimized saw chains to be

shipped will be coded ?X4?.

Last Technical Information on saw chain: 39.96

 1997 Andreas Stihl                       Andreas Stihl - D1/MTK
                                           Technical Documentation                   6112

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