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Owner’s Manual
PROFESSIONAL CUTTING HEADS
ISM, Inc. • 1028 4th St. SW • Auburn, WA 98001 • Phone: (253) 333-1200 • Fax: (253) 333-1212 • www.tanakapowerequipment.com
Safety Instructions
1.) *Warning! Read this owners manual as well as
the owners manual supplied with your grass trimmer.
Be sure to follow all warnings and safety instructions.
Failure to do so can result in serious injury to the
operator and/or bystanders.
2.) Wear eye protection that complies with ANSI
Z87-1 standard.
3.) Do not operate this or any type of power
equipment when you are tired, ill, or under the
influence of alcohol, drugs, or medication.
4.) Always wear heavy long pants, boots, and
gloves. Do not wear loose clothing, short pants,
sandals, or go bare foot. Secure hair so it is above
shoulder level.
5.) Inspect unit before each use. Replace parts that
may be cracked, chipped, or damaged in any way.
Make sure the cutting head is properly installed and
securely fastened. Be sure the cutting attachment
shield is properly attached in the position recom-
mended by the manufacturer.
6.) Clear the work area before each use. Remove
all objects such as rocks, broken glass, nails, wire,
or string which can be thrown or become entangled
in the cutting head. Clear the area of children,
bystanders, and pets in a 50 foot (15m) radius. It is
recommended that bystanders wear eye protection.
If you are approached, stop the engine and cutting
attachment immediately.
FIXED LINE
ITEM NUMBER
746280
MANUAL FEED
ITEM NUMBER
746290
Aluminum
Cutting Heads
Installation (continued)
This shoulder is necessary to mount these heads
securely and in the proper position. The diameter of
many mounting shoulders is 1” (25.4mm) and
both
heads require this size. For mounting shoulder diam-
eters that are .79” (20mm), a special shim is included
in the package contents to provide the necessary
spacing.
A variety of adapters are provided to accommodate
mounting to Tanaka as well as other units (see
sizes listed below). To mount the “Fixed Line”
head, (Ref. 1), place the recessed side on to the
mounting shoulder of the gear case. When using
the 8mm nut, always use the 10mm washer.
The “Manual Feed” head
is mounted in the same
manner, except that the
“Cutter Holder” (Ref. 2-4
show below) must always
be used as shown in Ref.
2A & 2B.
1-1
1-2
1-3
2-1
2-2
2-3
2-4
Aluminum Cutting Head Mounting Hardware
746280 / Fixed Line 746290 / Manual Feed
Installation
The Aluminum Cutting Heads
are designed for use on
straight shaft Grass Trim-
mers and they are mounted to
the unit in the same manner.
Typically, the gear case has a
separate piece or cover which
includes a mounting shoulder
on which blades are held and
centered.
WARNING!
These heads are
NOT RECOMMENDED
for use on units without a
mounting shoulder
Ref. 1
Ref. 2A
Ref. 2B
Ref.# Part No. Description
2-1 312-33386-20
Adapter Bolt
(8mm x 1.25 LHM)
2-2 313-38100-20
Adapter Nut
(10mm x 1.25 LHF)
2-3 27288
Mounting Shim
(20mm to 1")
2-4 311-37300-203 Cutter Holder
(#29592 - Page 1)
1-4
Ref.# Part No. Description
1-2 312- 33386-20
Adapter Bolt
(8mm x 1.25 LHM)
1-3 313-38100-20
Adapter Nut
(10mm x 1.25 LHF)
1-4 27288
Mounting Shim
(20mm to 1")
1-5 992-01100-011 Washer (10mm)