diamond mowers 60" Forestry Mulcher User manual

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350 EAST 60TH ST. N. • SIOUX FALLS, SD 57104
800.658.5561 • 605.977.3300
WWW.DIAMONDMOWERS.COM
PARTS 888.960.0361
WARRANTY + SERVICE 888.960.0364
OPERATOR’S MANUAL
SKID-STEER
FORESTRY MULCHER

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PRODUCT INFORMATION
Record the model and serial number of your unit here. When calling for
warranty, service or parts, you may be asked to provide this information,
in order to ensure fast, accurate service.
MODEL NUMBER: 60"(153cm) Forestry Mulcher
SERIAL NUMBER: ________________________________________________
©2017 Diamond Mowers.
All rights reserved.
SKID-STEER FORESTRY MULCHER OPERATOR’S MANUAL
Any failure to read, understand and follow the instructions found in this operator’s
manual could lead to serious injury. Operators who choose to operate this equipment
without following instructions, or who choose to operate this equipment in a manner
inconsistent with the recommendations set forth in this manual, do so at their own
risk and assume the risk of injury. Diamond Mowers will not be liable for an owner
or operator’s loss, damage, or injury due to the misuse of the equipment, failure to
understand the inherent risks, or inability to properly operate the equipment.
Patents: D742,421 : D731,559 : 9,441,678
Provisional Patents: 62/484,360

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WELCOME!
Thank you for choosing Diamond Mowers, and welcome to your skid-steer
forestry mulcher. Before you begin, we encourage you to look through this
manual to review the proper maintenance and operating techniques that will
keep you, and your equipment, safe – while ensuring
you the most productive forestry mulcher in the market.
We have nothing but respect and admiration for you. Our job at Diamond is
to provide you with the toughest, most reliable and safest equipment that
will allow you to do your job better. That also means being there when you
need us.
CONTACT US:
Parts: 888.960.0361 | [e-mail]
Warranty / Service: 888.960.0364 | warrant[email protected]
Main Office: 800.658.5561 | 605.977.3300
Website: www.diamondmowers.com |Email: inf[email protected]
Your time is important to us.
We guarantee that Genuine Diamond Parts will ship within 72-hours of the
order being placed, or the parts and shipping are free.
Your satisfaction is guaranteed.
If you are not completely satisfied with your new Diamond in the first
30-days, we will buy it back. No questions asked.
Thanks again for choosing Diamond.
If at any time your needs are not being met by our team, please feel free to
call me direct.
Tim Kubista
VP Sales & Marketing
651.955.6665
SKID-STEER FORESTRY MULCHER OPERATOR’S MANUAL

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OWNER REGISTRATION
In your welcome packet you should have received a warranty registration
form. Complete and return this form to our main office. It’s a self-mailer,
so no postage is required.
If you’d rather complete this info online, go to:
http://info.diamondmowers.com/register-my-product
Returning your registration information to Diamond will help us process any
warranty claims quickly and efficiently – so you can get back to work, fast.
TRANSFERRED OWNERSHIP
If you have acquired this forestry mulcher from a previous owner, we
encourage you to register your equipment online. By registering your
Diamond Mowers unit, you’ll stay informed on product advancements,
offers and service alerts.
Register by going to: http://info.diamondmowers.com/register-my-product
We honor our equipment’s warranty from the date it was put into service,
no matter who’s in charge of running it.
For any questions, contact our Warranty / Service team at:
888.960.0364 or 605.977.3300
warr[email protected]
SKID-STEER FORESTRY MULCHER OPERATOR’S MANUAL

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TABLE OF CONTENTS
INTENDED USE .........................................................6
TAKE A LOOK AROUND ................................................7
GETTING STARTED ....................................................9
OPERATING YOUR FORESTRY MULCHER . . . . . . . . . . . . . . . . . . . . . . . . 12
MAINTENANCE .......................................................17
TROUBLESHOOTING ...............................................26
PARTS BOOK ........................................................30
INDEX .................................................................34

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INTENDED USE
This attachment is designed to be used on a high flow 32-45 GPM (122-
171 LPM) skid-steer or track loader for mowing and brush management
applications.
This includes:
• Cutting grass
• Mulching brush
• Cutting small trees up to 14" (35.5cm) to ground level
This attachment should only be used in an area free of obstructions and
bystanders. Any use on non-vegetative material, or in an area that is not
clear of persons and property, is strictly prohibited. Any use outside of the
aforementioned application is considered contrary to its intended use. Any
damage that may occur as a result of misuse will void warranty as stated
in Diamond Mowers’ warranty policy.
WARNING
Do not operate this unit without first reading the safety precautions
and operating instructions in this manual.
SKID-STEER FORESTRY MULCHER OPERATOR’S MANUAL

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TEETH
To provide the most efficient cut,
we use hardened steel teeth that
act like an axe to slice into material.
DISC
The disc acts like a flywheel and
stores energy. The energy used to
cut and mulch comes from stored
energy, not hydraulic power alone. It
will take approximately 60 seconds
to come up to full speed.
PLANER KNIVES
Located in the center of the disc
to eliminate any dead zone in the
cutting area.
DEFLECTOR SHIELD
Fully adjustable, you can open the
deflector shield wide to distribute
debris quickly, or close it for more
control in where your exhaust is
distributed.
CONTINUED ON NEXT PAGE
TAKE A LOOK AROUND
Let’s get started by doing a quick walk around
of the skid-steer forestry mulcher.
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INTAKE CHUTES
Your forestry head comes standard
with two intake chute options. Pick
which one is best for your terrain:
NARROW INTAKE CHUTE
Designed for single stem, taller trees
without many lower branches. This
chute includes a hook to help feed
trees, and a ramp to scoop material
already on the ground into the head.
WIDE INTAKE CHUTE
Designed with an open throat to feed
larger, bushier trees more efficiently.
WARNING
Your forestry mulcher comes with
both intake chutes installed. You
must remove one of the two chutes
before operating. Running your
machine with both intake chutes
attached will cause damage to the
deck.
PUSH BAR
Guides material away from the
loader.
HOSES
Shipped with quick couplers and a
case drain line with both male and
female ends.
TAKE A LOOK AROUND
(CONTINUED)
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HIGH FLOW MACHINE
Diamond’s skid-steer forestry attachment
must be used on a high flow machine capable
of 32-45 GPM (122-171 LPM) and have a case drain.
INSTALL SHATTER RESISTANT ENCLOSURE
Safety glass is mandatory. This product must not
be used without a shatter resistant cab enclosure.
Debris can fly back at the cab and cause injury.
HOOK UP
The forestry mulcher will mount onto the front of
the skid loader’s quick detach arms in place of
a bucket or other implements.
CONNECT QUICK COUPLERS
The case drain line must be properly connected
or you will damage your hydraulic motor. The case
drain line will come equipped with both male and
female quick coupler connectors.
• Install the coupler that matches skid loader.
• Attachment is shipped with 1/2” flat face
connectors, which are a common size for
most skid loaders.
• To prevent contamination, clean connections
before attaching.
• Make sure the hose length outside of the bracket
is long enough for the head to make a full range
of motion, but not so long that the hose can
pinch.
CONTINUED ON NEXT PAGE
GETTING STARTED

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CONTINUED FROM PREVIOUS PAGE
• Start machine at low idle and verify that the disc
is spinning in the correct direction. As you sit
in the cab, it should spin left to right.
• If the pressure and return hoses are
reversed, the disc will spin backwards
resulting in damage.
• If this reversal occurs, either inverse the
flow from your loader or switch the
couplers on the pressure and return hose.
PICK YOUR INTAKE CHUTE
Your forestry mulcher comes with both intake
chutes installed. You must remove one of the two
chutes before operating. Running your machine
with both intake chutes attached will cause
damage to the deck.
Narrow Intake Chute - Designed for taller trees
without many lower branches. This chute includes
a hook to help feed trees, and a ramp to scoop
material already on the ground into the head.
Wide Intake Chute - Designed with an open throat
to feed larger, bushier trees more efficiently.
SKID-STEER FORESTRY MULCHER OPERATOR’S MANUAL

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ADJUST YOUR DEFLECTOR SHIELD
This adjustable shield helps control the direction
of processed material.
Open – Allows material to be dispersed quickly and
efficiently.
This position may restrict visibility while in
position.
*Most common position
Middle – Allows material to be dispersed evenly.
Closed – Allows material to be dispersed into piles.
This position is less efficient than the
open position.
Removed – Allows material to be dispersed
quickly and efficiently and maintain fully visibility.
WARNING
Do not use the deflector shield for pushing or
moving material while in the closed position.
Pushing material with the deflector shield will
bend the piece towards the disc and incur
damage to the shield.
Open
Middle
Closed

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OPERATING YOUR FORESTRY MULCHER
Before you operate, note that the primary responsibility for safety on this
equipment falls to the operator. Only trained individuals who have read and
understood this manual should operate this unit.
If any portion of this manual is not understood, contact Diamond Mowers’
Service/Warranty at 800.658.5561 or 605.977.3300.
SAFETY TIPS:
Be sure to read all warnings carefully. They are included for your safety,
and for the safety of others working with you.
This signal is used where serious injury or death will result if
instructions are not followed properly.
This signal is used where serious injury or death could result
if instructions are not followed properly.
This signal is used where minor injury could result if
instructions are not followed properly.
Always wear proper safety glasses, goggles, or a face shield when
operating.
Do not operate this unit without a shatter resistant cab
enclosure installed on your skid loader.
This unit will cause flying debris.
Block off work area from bystanders, livestock, etc.
Bystanders must keep a distance of 300’/91.5m from the unit
when it’s operating.
Teeth are always sharp and can cause injury, even when not in motion.
SKID-STEER FORESTRY MULCHER OPERATOR’S MANUAL
WARNING
CAUTION
DANGER

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Do not use extremities to dislodge debris from teeth or disc.
Operate only from the operator’s station.
Hydraulic fluid is hot and will heat any exposed steel, hoses, motor, or
spindle in its proximity.
Route hoses correctly to ensure a full range in motion.
Make certain hoses are out of the way of tires, tracks or the ground.
Be certain the disc has come to a complete stop before exiting the cab.
WARNING
Contact with the disc, teeth, and knives while the disc is in motion can
cause serious injury or death. The disc does spin at a very high speed
and can take several minutes to stop. Be sure all personnel is clear of the
machine before engaging the mulcher.
STOWED POSITION
When transporting Diamond’s forestry mulcher
between operations, make sure to protect it
from collisions and accidental damages by
placing it in the stowed position.
Failure to place the head in its stowed position
could result in structural damage.

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OPERATING TECHNIQUES
The following techniques help get your work done quickly, safely and
productively.
NOTE: When feeding and grinding material you’ll want
to use the right hand side of the disc.
When cutting only and pushing material away from the
machine you’ll want to use the left hand side of the disc.
CUT AND FEED – Trees 2"-6" (5cm-15.2cm)
• Cut with the right hand side of the disc so that
the disc will feed material into the head.
• Cut the tree at the bottom and scoop up the tree
(like scooping a load of dirt into a bucket)
while allowing the tree to fall into the hook (if
using the narrow chute) located at the top.
• This hook feature will hold the tree in the
right position for processing.
• The tree must be at the same angle as the disc
in order to pull the tree in to grind it.
BOTTOM GRIND – Trees 6"-10" (15.2cm-25.4cm)
• To top the tree - reach as high as comfortably
possible and cut the top of tree using the left
hand side of the disc and push the top of the
tree away from the cutter head to grind it later.
• Make certain to allow enough recovery
time to rebuild momentum.
• To grind the tree – angle the head back 45
degrees and drop the head as fast as possible
keeping the tree on the left side of the disc to
throw material away from the machine.
SKID-STEER FORESTRY MULCHER OPERATOR’S MANUAL

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GROUND PULL
To pull in and grind debris laying on the ground.
• Use the right side and bottom of the disc by
lifting the head slightly to suck branches or tree
tops underneath the disc to grind it.
• Use the bottom of the disc to re-process material
on the ground for a finer finish.
CUT WITHOUT GRIND
• Set your disc level and use the left hand side to
cut and push the tree away from skid-steer.
• This will act like a saw to cut the tree
without grinding it.
• For very large trees you will need to notch it
(similar to using a chainsaw), then come to the
other side to cut and drop the tree.
• Use your push bar to help direct the tree
away from the machine.
WARNING
Be aware when mulching standing trees as
there is potential for treetops to fall onto the
operator’s cab.

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STUMP CUT
To cut stumps at or below ground level.
• Keep the deck level and cut the stump low to
the ground.
• Wait to rebuild speed before proceeding
with a stump cut.
• Lift up and point the nose down to the ground
to allow the head to use the bottom teeth for
grinding.
NOTE: The more you use the stump cut application, the more
wear your teeth will incur.
CLEANING AND RE-PROCESSING
After mulching a tree for the first time, there will
likely be branches and large debris around the
work site. Re-processing the debris will provide
a more groomed look.
• Raise lift arms about 6" (15.2cm) and drop front
of head toward the ground with the disc leading
edge touching the ground.
• Back over the remaining debris for a more
finished look.
For more tips, visit us online at www.DiamondMowers.com
SKID-STEER FORESTRY MULCHER OPERATOR’S MANUAL

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MAINTENANCE INTERVALS
Regular maintenance will make certain your unit stays productive and retains
a long, operating life. The following chart represents the minimum intervals
recommended for inspection and maintenance.
When replacing parts, use Genuine Diamond Parts. Guaranteed to ship within
72-hours of your order, or the parts and shipping are free.
Call: 888.960.0361 or 605.977.3300
Email: Part[email protected]
Order online: www.DiamondMowers.com
Deflector Shield
Disc
Ejection Chute
Hydraulic Hoses & Fittings
Intake Chute (Narrow/Wide)
Motor Bolts
Motor Shield
Planer Knives
Push Bars
Quick Couplers
Safety Glass
Skid Shoes
Spindle
Spindle Bolts
Teeth
Procedure
X
X
X
X
X
X
X
X
X
10
hours
X
X
50
hours
X
X
X
Annually or 500 Hours
As
necessary

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DEFLECTOR SHIELD
• Deflector shield should be inspected every
10 hours, or daily.
• Replace as necessary.
DISC
• Disc should be inspected every 10 hours, or daily.
• Raise and secure the deck to inspect the disc
for any cracks or other damage.
• Disc should be replaced if damage is found.
If disc bolts are loose:
• Remove the bolts
• Apply Loctite 262 (red) to the threads
• Replace the bolts and torque to
212ft-lbs (287Nm)
EJECTION CHUTE
• Ejection chute bolts and nuts should be
inspected every 10 hours, or daily.
• Torque hardware to 110ft-lbs (149Nm).
• Replace as necessary.
SKID-STEER FORESTRY MULCHER OPERATOR’S MANUAL

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HYDRAULIC HOSES & FITTINGS
• Hydraulic hoses and fittings should be inspected
every 10 hours, or daily.
What to look for:
• Abrasions or cuts on hoses
• Replace damaged or worn hoses
• Attach wear pads around critical points
where hoses are likely pinched or rubbed
• Hydraulic fitting clamps and threaded
connections for any hydraulic fluid
• If any leaks are observed, stop
immediately to prevent damage to
your loader
CAUTION
DO NOT check for hydraulic leaks with your
hands or any part of your body. Use a heavy
piece of paper or cardboard to check areas
that are not readily visible. Pressurized
hydraulic fluid can penetrate the skin
and lead to serious health risks or death.
INTAKE CHUTE (NARROW or WIDE)
• Chute bolts and nuts should be inspected every
10 hours, or daily.
• Torque hardware to 110ft-lbs (149Nm).
• Replace as necessary.
MOTOR BOLTS
• Motor bolts should be inspected every 10 hours,
or daily.
• Torque hardware to 110ft-lbs (149Nm).
• Verify that locking tabs are in place.
• Assemble locking tabs to the u-shaped tab
over the cab bolts with their hardware.

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MOTOR SHIELD
• Check for damage every 50 hours, or weekly.
• Torque hardware to 75ft-lbs (102Nm).
PLANER KNIVES
• Planer knives should be inspected every 10 hours,
depending on usage.
• Inspect the planer knives for any cracks or
damage.
• No sharpening required.
• Replace as necessary.
If planer bolts are loose:
• Remove the bolts
• Apply Loctite 262 (red) to the threads
• Replace the bolts and torque to 110ft/lbs
(149Nm)
PUSH BAR
• Check for cracks.
• Repair as necessary.
SHATTER RESISTANT ENCLOSURE
• REQUIRED! Debris can be thrown unexpectedly in
any direction. Do not attempt to use this forestry
head without proper protection.
• Clean only with mild soap and water using a
sponge or soft cloth.
• Replace as necessary.
SKID-STEER FORESTRY MULCHER OPERATOR’S MANUAL