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WARNING: WE DO NOT REPRESENT AND YOU SHOULD NOT ASSUME THAT THE CHAIN
BRAKE WILL PROTECT YOU IN THE EVENT OF A KICKBACK. DO NOT RELY UPON ANY OF
THE DEVICES BUILT INTO YOUR SAW. YOU SHOULD USE THE SAW PROPERLY AND
CAREFULLY TO AVOID KICKBACK.
Reduced-Kickback Guide Bar and Low-Kickback Chain
Reduced-kickback guide bars and low-kickback saw chains reduce the chance and magnitude of kickback
and are recommended. Your saw has a low kickback chain and bar as original equipment. Repairs on a chain
brake should be made by an authorized servicing dealer. Take your unit to the place of
purchase if purchased from a servicing dealer, or to the nearest authorized service dealer.
WARNING: Computed kickback angle (CKA) listed on your saw and listed in the CKA table
below represents angle of kickback your bar and chain combinations will have when tested
in accordance with CSA (Canadian Standards Association) and ANSI standards. When
purchasing replacement bar and chain, considerations should be given to the lower CKA
values. Lower CKA values represent safer angles to the user, higher values indicate more
angle and higher kick energies. Computed angles represented indicate total energy and
angle associated without activation of the chain brake during kickback. Activated angle
represents chain stopping time relative to activation angle of chain break and resulting kick
angle of saw. In all cases lower CKA values represent a safer operating environment for the
user. The following guide bar and chain combinations meet kickback requirements of
ANSI B175.1 when used on saws listed in this manual. Use of bar and chain combinations
other than those listed is not recommended and may not meet the CKA requirements per
standard.
WARNING: Do not mount a bow guide on any Efco chainsaw. The risk of kickback is
increased with a bow guide because of the increased kickback contact area.
Recommended bar and chain combination
3/8" x .050" Pitch Chain
MODEL
MT 3750 - MT 4100 SP
MT 3750 - MT 4100 SP
MT 3750 - MT 4100 SP
MT 3750 - MT 4100 SP
12
SAFETY RULES
BAR
OREGON BAR
LENGTH
P. N.
14"
140SDEA041
16"
160SDEA041
14"
140SDEA041
16"
160SDEA041
OREGON
DRIVE LINK
CHAIN P. N.
COUNT
91P052X
52
91P057X
57
91PS052X
52
91PS057X
57
CKA WITHOUT
CHAIN BRAKE
29.3°
29.3°
16°
16°
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