Oregon Scientific Super Guard 72LGX User manual

OREGON®72LGX, 73LGX, and 75LGX (3/8"-pitch Super Guard®) chains
feature cutters that have an advanced grind geometry that is "work ready". This
series saw chain is only for professionals who demand saw chain that delivers
high performance, resists stretch, simple to maintain, provides long life, and is con-
sistent from loop to loop.
72LGX .050"
73LGX .058"
75LGX .063"
12 in. to 36 in. (30 to 91 cm)
3/8"
Ramp-shaped
depth gauges
on each cutter
Commercial
Professional
CHAIN PITCH AND GAUGE
RECOMMENDED TYPES OF USE
RECOMMENDED BAR LENGTHS
KICKBACK-REDUCING FEATURES
PITCH
GAUGE
72LGX F&B A107022 AG 1108
Standard sequence: 72LGX, 73LGX, 75LGX
Skip sequence: 72JGX, 73JGX, 75JGX
CUTTER SEQUENCE
72LGX, 73LGX, and 75LGX
SUPER GUARD®CHAINS
Advanced grind geometry Significantly enhanced out-of-box grind•
No out-of-box maintenance needed•
Superior cutting efficiency, less force-feed•
required
Improved fuel economy•
Blued cutters Superior corrosion resistance•
Base-cutter hardness consistency•
Pro-look•
Improved strength•
Tumbled parts Smooth finish•
Improved joint articulation, combats•
tight joints
Offset ramp-shaped depth
gauges
Offset reduces roughness, helps prevent•
cutter from diving into the sidewall of the cut
The ramped shape reduces kickback ener-•
gies without affecting performance
Clean ground gullets Increases chip flow, less chain clogging•
No out-of-the box filing needed•
Long, high-strength cutter
top plate
Resists breakage•
Longer cutter life•
Top-plate-angle witness
mark
Sharpening is easy and consistent, every•
time and serves as end-of-life indicator
Lubrilink™ tie straps More oil stays where it's needed: on the chain•
72LGX, 73LGX, and 75LGX are
yellow-label chains. Though these
chains have ramped depth gauges
which reduce kickback energies,
these are NOT low-kickback chains.
These chains should be used ONLY
by individuals with experience and
specialized training for dealing with
kickback.
KICKBACK – ANSI CLASSIFICATION
RECOMMENDED SAW SIZES
Use with gasoline-powered saws
3.0 to 6.0 cu. in. (50 to 100 cc)
Features Benefits
* patent pending

For more information on these and other OREGON®products, contact your authorized OREGON®distributor, or:
OREGON®| BLOUNT, INC. PO Box 22127 · Portland, OR, U.S.A. 97269-2127
Phone: [phone] Fax: [phone] Web: www.oregonchain.com
IN CANADA: OREGON®DISTRIBUTION LTD. 505 Edinburgh Rd. N., Guelph, Ontario, Canada N1H 6L4
Phone: [phone] Fax: [phone] Printed in USA 72LGX F&B A107022 AG 1108
OREGON®72LGX/JGX, 73LGX/JGX, and 75LGX/JGX Super
Guard®chains may be capable of kickback that could result in
serious injury to the saw operator or bystanders.
Although these chains have features designed to reduce kickback energies, these
are NOT low-kickback chains. Do not use OREGON®72LGX/JGX, 73LGX/JGX, or
75LGX/JGX Super Guard®chains unless you have experience and specialized training
for dealing with kickback. Saw chain with lower kickback potential is available.
Failure to follow filing instructions can
increase the level of kickback which
can result in severe injury to the saw operator or bystanders.
*Do not exceed the depth-gauge setting shown above
*Always file depth gauges back to their original rounded
or ramped shape after lowering
If you cut abrasive woods such as railroad ties, skidded wood, fire damaged areas, par-
tially logged areas after a skidder, or any place where wood is dirty, we recommend you
use the MultiCut™ versions of OREGON®chains. MultiCut™ chains have extra-heavy-
duty chrome plating applied with an advanced plating process to withstand these kinds of
tough, dirty conditions. It also allows you to maintain your saw chain without the need of
any special tools. Contact OREGON®or your authorized OREGON®distributor for further
information on MultiCut™ chains.
Do you cut wood in dirty or abrasive conditions?
Standard
Chain Part No.
Multicut
Part No.
72LGX M72LPX
73LGX M73LPX
75LGX M75LPX
Chain Replacement Parts
Chain Type Left-hand Cutter Right-hand Cutter Tie Strap Preset Tie Strap Drive Link
72LGX/JGX P26197 (25-PK.) P26198 (25-PK.) P23837 (25-PK.) P23910 (25-PK.) P65715 (25-PK.)
73LGX/JGX P26197 (25-PK.) P26198 (25-PK.) P23837 (25-PK.) P23910 (25-PK.) P68183 (25-PK.)
75LGX/JGX P26197 (25-PK.) P26198 (25-PK.) P23837 (25-PK.) P23921 (25-PK.) P30927 (25-PK.)
Maintenance Tools
File Size Assembled File
Guide
Round Files Depth Gauge
Tool, .025"
Flat File Bench Grinder
Wheel 5 3/4"
Mini Grinder
Wheel, 4 1/4"
7/32" (5.6mm) 31686 (EA.) 70502 (12-PK.)
40458 (2-PK.)
31941 (10-PK.) 12211 (12-PK.) OR534-316
(3/16"Thick)
OR4125-316
(3/16"Thick)
Which cutter sequence is best, standard or skip?
What type of cutting do you do? The cutter sequence to use:
I cut "non-fibrous" woods of average size, with guide bars up to 24" Standard sequence (72LGX, 73LGX, 75LGX)
I cut fibrous woods, such as cedar or hemlock Skip sequence (72JGX, 73JGX, 75JGX)
I cut large wood using very long bars, approximately 28" or longer Skip sequence (72JGX, 73JGX, 75JGX)
FILING
INSTRUCTIONS
(without file guide)
A B C D
TOP PLATE ANGLE DOWN ANGLE DEPTH GAUGE SETTING FINISHED CUTTER
GRINDING
INSTRUCTIONS
VISE ROTATE ANGLE VISE TILT ANGLE HEAD TILT ANGLE DEPTH GAUGE SETTING FINISHED CUTTER
25º
25º 10º
10º
55º
.025"
(.6 mm)
.025"
(.6 mm)
When using an OREGON®file guide, ALWAYS
hold it level, 0°, flat on the Top Plate.
*
.025"
(.6 mm)
.025"
(.6 mm)
.025"
(.6 mm)
.025"
(.6 mm)
*
(LGX not available in Multicut)