Gehl 1162 User manual

1162/1165
Disc Mower
OPERATOR’S MANUAL
Form No.
909793
Revision B


GEHL
NEW AGRICULTURAL EQUIPMENT
DISC MOWER
WARRANTY
GEHL AGRICULTURE DIVISION of the GEHL COMPANY, hereinafter referred to as Gehl,
warrants new Gehl Disc Mowers and attachments, to the Original Retail Purchaser to be free
from defects in material and workmanship for a period of twelve (12) months {ninety (90) days
for commercial/custom use} from the Warranty Start Date.
GEHL AGRICULTURE WARRANTY INCLUDES:
Genuine Gehl parts and labor costs required to repair or replace equipment at the selling
dealer’s business location.
GEHL MAKES NO REPRESENTATIONS OR WARRANTIES OF ANY KIND,
EXPRESS OR IMPLIED (INCLUDING THE IMPLIED WARRANTIES OF
MERCHANTABILITY AND FITNESS FOR PARTICULAR PURPOSE), EXCEPT AS
EXPRESSLY STATED IN THIS WARRANTY STATEMENT.
GEHL WARRANTY DOES NOT INCLUDE:
1. Transportation to selling dealer’s business location or, at the option of the Original Retail Purchaser,
the cost of a service call.
2. Used equipment.
3. Components covered by their own non-Gehl warranties, such as tires, trade accessories and
engines.
4. Normal maintenance service and expendable, high wear items.
5. Repairs or adjustments caused by: improper use; non- intended use; failure to follow recommended
maintenance procedures; use of unauthorized attachments; accident or other casualty.
6. Liability for incidental or consequential damages of any type, including, but not limited to lost profits
or expenses of acquiring replacement equipment.
No agent, employee or representative of Gehl has any authority to bind Gehl to any warranty except as
specifically set forth herein. Any of these limitations excluded by local law shall be deemed deleted from this
warranty; all other terms will continue to apply.

Printed in U.S.A. 1909793/BP0805
TABLE OF CONTENTS
Warranty Inside Front Cover. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Chapter 1
Introduction 2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Chapter 2
Specifications 3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Chapter 3
Checklists 5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Chapter 4
Safety 8. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Chapter 5
Controls & Safety Equipment 14. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Chapter 6
Operation 18. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Chapter 7
Adjustments 20. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Chapter 8
Lubrication 24. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Chapter 9
Service 26. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Chapter 10
Preparing for Field Operation 30. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Chapter 11
Transporting 34. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Chapter 12
Storage 36. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Chapter 13
Troubleshooting 37. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Chapter 14
Set-up & Assembly 38. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Chapter 15
Optional Equipment & Accessories 45. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Chapter 16
Decal Locations 46. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Index 48. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Standard Hardware Torque Inside Back Cover. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

909793/BP0805 2Printed in U.S.A.
CHAPTER 1
INTRODUCTION
This Operator’s Manual provides information about
maintaining and servicing the DM1162 and DM1165
disc mowers. More important, this manual provides an
operating plan for safe and proper use of the machine.
Major points of safe operation are detailed in the Safety
chapter.
Please read and understand the contents of this manual
completely and become familiar with the machine
before operating it. See your authorized Gehl dealer
with any questions concerning information in the
manual, for additional manuals or for information
concerning availability of manuals in other languages.
Throughout this manual, information is provided that is
set in italic type and introduced by the word NOTE or
IMPORTANT. BE SURE to read carefully and comply
with the message — it will improve operating and
maintenance efficiency, help avoid breakdowns or
damage, and extend machine life.
This Operator’s Manual and an AEM Safety Manual are
provided with the machine. These manuals should stay
with the machine at all times, and should remain with
the machine if it is resold.
If the machine was purchased used, or if the owner’s
address has changed, please provide the Gehl dealer or
Gehl Company Service Department with the current
owner’s name and address, along with the machine
model and serial number. This will allow the owner to
be notified directly in case of an important product
issue, such as a safety update program.
Typical Model & Serial Number Plate
DM116
COMPANY
WESTBEND,WI53095USA
M O D E L N O .
S E R I A L N O .
(Fill In)
(Fill In)
DO NOT use the machine for any applications or
purposes other that those described in this manual.
Before using the machine with special attachments
other than those approved by Gehl, consult your Gehl
dealer. Any person using non-approved attachments is
responsible for the consequences.
The Gehl dealership network stands ready to provide
any assistance that may be required, including provid-
ing genuine Gehl service parts. All service parts should
be obtained from a Gehl dealer. Give complete informa-
tion about the part and include the model and serial
numbers of machine. Record the serial number in the
space provided above, for quick reference.
The model number and serial number for the machine
are on a plate located on a gusset on the main frame.
“Right” and “left” are determined from a position
standing behind the unit and facing the direction of
travel. From this position, the support leg is on the “left”
side.
Gehl Company strives to continuously improve its
products and reserves the right to make changes and
improvements in the design and construction of any part
without incurring the obligation to install such changes
on any machine previously delivered.

Printed in U.S.A. 3909793/BP0805
CHAPTER 2
SPECIFICATIONS
All Dimensions are in Inches (Millimeters) Unless Otherwise Noted
Models & Description:
DM1162 & DM1165 Disc Mower
Cutting Width:
DM1162 94 (2388). . . . . . . . . . . . . . . . . . . .
DM1165 110 (2794). . . . . . . . . . . . . . . . . . .
Minimum Power Required:
DM1162 42 hp (30 kW). . . . . . . . . . . . . . . .
DM1165 50 hp (36 kW). . . . . . . . . . . . . . . .
PTO Drive Speed 540 RPM. . . . . . . . . . . . . . . . . . . .
Hitch Type Category II 3-point. . . . . . . . . . . . . . . . .
Number of Discs:
DM1162 6. . . . . . . . . . . . . . . . . . . . . . . . . . .
DM1165 7. . . . . . . . . . . . . . . . . . . . . . . . . . .
Disc Speed 2986 RPM. . . . . . . . . . . . . . . . . . . . . . . .
Total Number of Knives:
DM1162 12. . . . . . . . . . . . . . . . . . . . . . . . . .
DM1165 14. . . . . . . . . . . . . . . . . . . . . . . . . .
Transport Width 10 (254) plus width of tractor. . . .
Approximate weight:
DM1162 1180 lbs. (536 kg). . . . . . . . . . . . . .
DM1165 1250 lbs. (568 kg). . . . . . . . . . . . .
Hardware Metric. . . . . . . . . . . . . . . . . . . . . . . . . . . .
Oil Capacities:
Main Drive Gearbox 0.5 U.S. qts. (0.45 Liter). . . . .
Cutterbar 2.1 U.S. qts. (2.0 Liters). . . . . . . . . . . . . . .
Standard Features:
Hydraulic Lift Cylinder & Hoses
Flexible Safety Shield - Supported on Left Side Only
Disc Protection Plates & Skid Shoes
Heavy Duty, Category II, 3-Point Hitch Mount with
Adjustable Lower Link Pins
Heavy Duty PTO with Overrunning Clutch
Six (DM1162) and Seven (DM1165) Disc, Low Pro-
file
Cutterbar with Heavy Duty Gears & Bearings
Easily Replaceable Disc Drive Stations
Right Side Swathing Wheel
Self-supporting when Removed from Tractor
Transport Lock Controlled from Operator’s Seat
Outer Swath Wheel
Optional Features:
Side Deflector Kit
V-type Knives

Chapter 2 - Specifications
909793/BP0805 4Printed in U.S.A.
INTENTIONALLY BLANK

Printed in U.S.A. 5909793/BP0805
CHAPTER 3
CHECKLIST
PRE-DELIVERY
After the disc mower has been completely set-up, the
following inspections MUST be made before deliver-
ing it to the customer. Check off each item after it is
completed.
Check that:
oDisc mower has been assembled correctly according to
instructions in the Set-up & Assembly chapter of the oper-
ator’s manual.
oThe pressure relief valve, which is located in the side of
the angle gearbox, is free to operate and not seized up.
oAll grease fittings have been properly lubricated (see the
Lubrication chapter for locations).
oThe gearbox and cutterbar have been filled to their proper
operating levels (see the Lubrication chapter).
oAll guards, shields and decals are in place and securely at-
tached.
oAll fasteners are properly secured.
oAll adjustments have been made to comply with settings
given in the Adjustments chapter.
oModel and serial numbers for the machine are recorded in
spaces provided in both checklist pages.
Hook the unit up to a 540 RPM tractor and test
run the unit while making sure that proper
operation is exhibited by all components.
Check that:
oThe telescoping PTO driveline rotates freely inside the
properly chain anchored PTO shields.
oAll blades and discs are turning freely.
oAll mechanisms are operating smoothly.
oAll hydraulic hose connections are not leaking under pres-
sure.
oThe lift mechanism is operating smoothly and properly.
I acknowledge that pre-delivery procedures were per-
formed on the machine as outlined above.
Dealership’s Name
Dealer Representative’s Name
Date Checklist Filled-out
Model Number Serial Number
DELIVERY
The following checklist is an important reminder of
valuable information that MUST be passed on to the
customer at the time the machine is delivered. Check off
each item as you explain it to the customer.
Check that:
oGive the operator’s manual to the customer. Instruct the
customer to be sure to read and completely understand the
operator’s manual BEFORE operating the machine.
oExplain how to use the Index in the operator’s manual as
a quick page number locating guide.
oExplain the Safety chapter in the operator’s manual and
review it with the customer.
oExplain that the machine requires regular lubrication for
continued proper operation and long life. Review the Lu-
brication chapter in the manual with the customer, empha-
sizing that the oil in the cutterbar and the gearbox MUST
be changed after the first 10 hours of operation.
oExplain the function of the PTO slip clutch.
oExplain the function of the transport lock and how it oper-
ates.
oExplain the function of the cutterbar breakaway mecha-
nism.
oExplain the function and value of the PTO safety chain
and the flexible sheet cutterbar guard.
oDemonstrate the proper use of the spring-loaded PTO
locking couplers.
Completely fill out the Owner’s Registration, including
the customer’s signature, and return it to the company.
Customer’s Signature
Date Delivered
(Dealer’s File Copy)
Remove Dealer’s File Copy at Perforation

909793/BP0805 6Printed in U.S.A.
INTENTIONALLY BLANK
(To be removed as Dealer’s File Copy)

Printed in U.S.A. 7909793/BP0805
CHAPTER
CHECKLIST
PRE-DELIVERY
After the disc mower has been completely set-up, the
following inspections MUST be made before delivering
it to the customer. Check off each item after it is
completed.
Check that:
oDisc mower has been assembled correctly according to in-
structions in the Set-up & Assembly chapter of the opera-
tor’s manual.
oThe pressure relief valve, which is located in the side of
the angle gearbox, is free to operate and not seized up.
oAll grease fittings have been properly lubricated (see the
Lubrication chapter for locations).
oThe gearbox and cutterbar have been filled to their proper
operating levels (see the Lubrication chapter).
oAll guards, shields and decals are in place and securely at-
tached.
oAll fasteners are properly secured.
oAll adjustments have been made to comply with settings
given in the Adjustments chapter.
oModel and serial numbers for the machine are recorded in
spaces provided on both checklist pages.
Hook the unit up to a 540 RPM tractor and test
run the unit while making sure that proper
operation is exhibited by all components.
Check that:
oThe telescoping PTO driveline rotates freely inside the
properly chain anchored PTO shields.
oAll blades and discs are turning freely.
oAll mechanisms are operating smoothly.
oAll hydraulic hose connections are not leaking under pres-
sure.
oThe lift mechanism is operating smoothly and properly.
I acknowledge that pre-delivery procedures were per-
formed on the machine as outlined above.
Dealership’s Name
Dealer Representative’s Name
Date Checklist Filled-out
Model Number Serial Number
DELIVERY
The following Checklist is an important reminder of
valuable information that MUST be passed on to the
customer at the time the machine is delivered. Check off
each item as you explain it to the customer.
Check that:
oGive the operator’s manual to the customer. Instruct the
customer to be sure to read and completely understand the
operator’s manual BEFORE operating the machine.
oExplain how to use the Index in the operator’s manual as
a quick page number locating guide.
oExplain the Safety chapter in the operator’s manual and
review it with the customer.
oExplain that the machine requires regular lubrication for
continued proper operation and long life. Review the Lu-
brication chapter in the manual with the customer, empha-
sizing that the oil in the cutterbar and the gearbox MUST
be changed after the first 10 hours of operation.
oExplain the function of the PTO slip clutch.
oExplain to the customer the function of the transport lock
and how it operates.
oExplain the function of the cutterbar breakaway mecha-
nism.
oExplain the function and value of the PTO safety chain
and the flexible sheet cutterbar guard.
oDemonstrate the proper use of the spring-loaded PTO
locking couplers.
Completely fill out the Owner’s Registration, including
the customer’s signature, and return it to the company.
Customer’s Signature
Date Delivered
(Pages 5 & 6 Have Been Removed
at Perforation)
Remove Dealer’s File Copy at Perforation

909793/BP0805 8Printed in U.S.A.
CHAPTER 4
SAFETY
The above Safety Alert Symbol means ATTENTION!
BE ALERT! YOUR SAFETY IS INVOLVED! It
stresses an attitude of ‘‘Heads Up for Safety’’ and can be
found throughout this Operator’s Manual and on the
machine itself.
BEFORE YOU ATTEMPT TO OPERATE THE
MACHINE, READ AND STUDY THE FOLLOW-
ING SAFETY INFORMATION. BE SURE THAT
EVERYONE WHO OPERATES OR WORKS
WITH THIS EQUIPMENT IS FAMILIAR WITH
THESE SAFETY PRECAUTIONS.
Gehl Company ALWAYS takes operator safety into
consideration during product design, guarding exposed
moving parts for operator protection wherever possible.
Some areas, however, cannot be guarded or shielded
without adversely effecting operation.
Information in this manual and decals on the machine
warn of hazards. Both this manual and the decals should
be read and observed closely.
DANGER
‘‘DANGER’’ indicates an imminently hazard-
ous situation which, if not avoided, will result
in death or serious injury.
WARNING
‘‘WARNING’’ indicates a potentially hazard-
ous situation which, if not avoided, could re-
sult in death or serious injury.
CAUTION
‘‘CAUTION’’ indicates a potentially hazardous
situation which, if not avoided, may result in
minor or moderate injury. May also alert
against unsafe practices.
MANDATORY SAFETY SHUTDOWN
PROCEDURE
Work of any type on machinery is always more
hazardous when the machine is in operation.
Therefore, unless expressly instructed to the
contrary, BEFORE unclogging, cleaning, ad-
justing, lubricating or servicing the machine,
the following MANDATORY SAFETY SHUT-
DOWN PROCEDURE should ALWAYS be fol-
lowed:
BEFORE unclogging, cleaning, adjusting, lubricat-
ing or servicing the machine:
1. Disengage the tractor PTO.
2. Place the tractor transmission in park and/or
lock brake pedals to prevent tractor move-
ment, then shut off the tractor engine. Lower
the machine until it is resting on firm ground.
3. Remove the tractor ignition key and take it
with you.
4. Wait for all movement to stop.
5. Remove the telescoping PTO drive.
ONLY when you have taken these precautions can
you be sure it is safe to proceed. Failure to follow the
above procedure could lead to death or serious
bodily injury!
SAFETY REMINDERS
It is recommended that the towing tractor be equipped
with an enclosed operator’s cab with safety glass or
polycarbonate windows, or with protective mesh
screens.
Some photographs used in this manual may show doors,
guards and shields open or removed for illustration
purposes ONLY. BE SURE all doors, guards and shields
are in their proper operating positions and securely
attached BEFORE operating the machine.
ALWAYS wear safety glasses with side shields when
striking metal against metal. It is further recommended
that a softer (chip-resistant) material be used to cushion
the blow. Failure to follow these instructions could lead
to serious injury to the eyes or other parts of the body.

Printed in U.S.A. 9909793/BP0805
SAFETY
(Continued)
BEFORE using the disc mower, inspect the cutting
knives, discs and attaching hardware. Do not straighten
bent knives — they must be replaced. Knives MUST be
replaced in pairs.
To ensure continued safe operation, replace damaged or
worn-out parts with genuine Gehl service parts, BE-
FORE operating the machine.
Regularly inspect the disc mower’s curtain. Replace the
curtain if it is worn or damaged. NEVER operate the
machine unless the protective curtain is in place and
folded down.
NEVER search for hydraulic fluid leaks using your bare
hands — use a piece of cardboard instead. Escaping
fluid under pressure can be invisible and can penetrate
skin and cause serious injury! If any fluid is injected into
the skin, see a doctor at once! Injected fluid MUST BE
surgically removed by a doctor familiar with this type of
injury or gangrene may result.
To avoid injury when changing from the “transport”
position to “operating” position, or “operating” to
“transport” position, BE SURE the immediate area is
clear of people and obstructions BEFORE changing
positions!
Fields to be mowed must be free of obstructions. Keep
people 50 feet (15 m) or more away from the machine
during operation. If an obstruction is encountered
during mowing, stop the unit immediately — follow the
MANDATORY SAFETY SHUTDOWN PROCE-
DURE! Check the entire disc mower before continuing
use.
DO NOT go near the machine until the discs have
stopped rotating! The mechanism can continue to
operate after the PTO is disengaged!
DO NOT attempt to hand feed or kick any crop or
material into the machine!
DO NOT attempt to mow crop in reverse!
DO NOT mow crop until you ARE SURE that the field
to be mowed is free of obstructions!
REMEMBER, it is the owner’s responsibility to com-
municate information about the safe use and proper
maintenance of the machine.
WARNING
DO NOT use the DM1162 or DM1165 Mower for
roadside cutting. DO NOT operate near
people.
125476

909793/BP0805 10 Printed in U.S.A.
SAFETY
(Continued)
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Printed in U.S.A. 11 909793/BP0805
SAFETY
(Continued)
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SAFETY
(Continued)
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Printed in U.S.A. 13 909793/BP0805
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(Continued)
091444

909793/BP0805 14 Printed in U.S.A.
CHAPTER 5
CONTROLS & SAFETY EQUIPMENT
CAUTION
Become familiar with and know how to use
ALL safety devices and controls on the disc
mower BEFORE operating it. Know how to
stop disc mower operation before starting.
GUARDS, COVERS & SHIELDS
Where possible (without affecting machine operation),
guards, covers and shields are used to protect potentially
hazardous areas. In many places, decals are also
provided to warn of potential hazards as well as to
display special operating procedures.
WARNING
Read and observe ALL warnings on the ma-
chine BEFORE operating it. DO NOT operate
the machine unless ALL factory-installed
guards, covers and shields are in place and
properly secured.
Drive Line Shields (Fig . 1)
The telescoping PTO drive, between the disc mower
input shaft and tractor PTO shaft, is equipped with guard
tubes which are held stationary by chains. Be sure the
front chain is attached to tractor and the rear chain is
attached to the disc mower.
WARNING
BEFORE starting the tractor engine, BE SURE
the PTO is properly coupled to the tractor PTO
shaft and mower input shaft. Also, BE SURE
that the PTO guard tubes are properly chained
to the tractor PTO guard and disc mower to
prevent the tubes from turning.
1 - PTO Drive Shield
2 - PTO Drive Coupler
3 - PTO Guard Tube Chain (2 places)
4 - Disc Mower PTO Shield
Fig. 1: Telescoping PTO Driveline Shields
1
2
3
4
3
Belt Drive Cover (Fig. 2)
A cover is provided to protect and prevent contact with
the moving drive belts. Be sure the cover is in place and
tightly secured whenever the disc mower is in operation.
1 - Drive Belt Cover
Fig. 2
1

Chapter 5 - Controls & Safety Equipment
Printed in U.S.A. 15 909793/BP0805
1 - Protective Cover
2 - Cover Lock Mechanism (Also see Fig. 4)
Fig. 3: Protective Cover in Operating Position
(Folded Down)
2
1
Cutterbar Protective Cover (Fig. 3)
WARNING
Be sure that the protective cover is in the op-
erating position and properly secured BE-
FORE starting the tractor engine. The cover
will stop most debris and foreign objects that
might be propelled by the rotating knives and
discs below it, but it may not stop all such ma-
terial. DO NOT operate near people. NEVER
operate the disc mower with the protective
cover in the raised position.
The protective cover (Fig. 3, Ref. 1) is designed to
contain MOST debris and foreign objects that could be
expelled by the rotating knives and discs below it. This
cover MUST ALWAYS be in the operating position
while the mower is running.
PROTECTIVE COVER LOCK
(Figs. 4 & 5)
The protective cover is provided with a lock (Fig. 4, Ref.
1) which automatically engages when the front half of
the cover is raised and folded over the rear half. This
locking feature secures the cover front half during
transport (when the cutterbar is raised into the vertical
position).
To raise the cover and place it in the transport position:
1. Insert the handle-end of the special box wrench
(Fig. 4, Ref. 3) into the access hole (Fig. 4, Ref.
2). The special box wrench is provided with the
disc mower.
2. Push to release the lock while pulling up on the
cover front half as shown.
3. Fold the cover back until it locks into the transport
position.
1 - Protective Cover Lock Mechanism
2 - Release Access Hole
3 - Special Box Wrench
Fig. 4: Releasing Protective Cover Lock
to Place Cover into Transport Position
1
2
3

Chapter 5 - Controls & Safety Equipment
909793/BP0805 16 Printed in U.S.A.
1 - Release Lever
Fig. 5: Releasing Protective Cover Lock
1
To lower the cover and place it in the operating position:
1. Lower the cutterbar into the operating position
(refer to the transport locks section later in this
chapter for proper procedure).
2. Use your fingers or the palm of your hand to apply
pressure on the lever (Fig. 5, Ref. 1) to release the
protective cover lock.
3. While applying pressure to the lever, fold the cov-
er front half forward and down as shown.
4. Release the lever and continue to fold the cover
down until it locks into the operating position.
TRANSPORT & OPERATING
POSITION LOCKS (Fig. 6)
Stop lock (Ref. 1) - When in the operating position, this
lock is provided to prevent raising the cutterbar to the
transport position.
Transport hook- type lock (Ref. 2) - When the cutterbar
is moved into the transport position, this lock is
automatically engaged to prevent the cutterbar from
lowering.
Cylinder stroke limiter Lock (Ref. 5) - When in the
operating position and with the hydraulic control set to
“float” position, this lock prevents the cylinder rod
clevis from bottoming against the cylinder packing
gland.
All three of these locks are released by pulling on the
rope release mechanism (Ref. 4).
NOTE: Refer to the Transporting chapter for
proper procedures to place the cutterbar in the
transport and operating positions.
CAUTION
BEFORE transporting the disc mower on a
public highway or from one field to another,
BE SURE the transport hook lock is properly
engaged.
1 - Stop Lock
2 - Hook-type Transport Lock
3 - Rope Control Lift Points
Fig. 6: Transport & Operating Position Locks
1
5
1
4
4 - Rope Control
5 - Cylinder Stroke Limiter
6 - Parking Lock
2
2
3
4
3
5
6

Chapter 5 - Controls & Safety Equipment
Printed in U.S.A. 17 909793/BP0805
PARKING LOCK (See Fig. 6)
The mower is equipped with a parking lock (Fig. 6, Ref.
6) which keeps the 3-point hitch raised when the mower
is detached from the tractor.
NOTE: Refer to the Transporting chapter for
proper use of the parking lock.
BREAKAWAY LATCH (Fig. 7)
The mower is equipped with a breakaway latch and if an
obstruction is hit, the cutterbar must be free to swing
back. If the latch releases, stop the tractor immediately
and disengage the PTO. To reset the cutterbar, back the
mower until the cutterbar is in its normal position. DO
NOT raise the cutterbar to re-latch the breakaway.
Check for any cutterbar damage before resuming
operation after an obstruction is encountered.
1 - Sliding Area
2 - Latch Mechanism in “Latched” Position
3 - Spring Washer Stack
4 - Adjustment Bolt
Fig. 7: Breakaway Latch
1
2
34
IMPORTANT: Before using the mower, BE
SURE all sliding areas (Ref. 1) of the breakaway
latch mechanism are well greased and the
mechanism is operating properly.
Tension on the breakaway latch is determined by the
amount of compression on the spring washer stack (Ref.
3). The tension as set at the factory will be suitable for
most conditions. If the cutterbar continues to break
away, turn the adjustment bolt (Ref. 4) clockwise to
increase the breakaway pressure. (Refer to the Adjust-
ments chapter for additional information.)
IMPORTANT: DO NOT overtighten the
adjustment bolt.
IMPORTANT: In rough field conditions, ground
speed should be reduced to protect the machine
from damage.
TELESCOPING DRIVE COUPLER
(See Fig. 1)
The telescoping drive is equipped with spring-loaded
locking devices to positively lock it onto the tractor PTO
shaft and the disc mower input shaft. Depress the
locking device against the spring tension and slide the
yoke onto the tractor PTO shaft. Release the locking
device and move the yoke ahead or back until the lock
engages into the groove of the PTO shaft. The same
process is used to install the other end of the telescoping
drive line to the disc mower input shaft.

909793/BP0805 18 Printed in U.S.A.
CHAPTER 6
OPERATION
FIRST TIME OPERATION
WARNING
If this is the first time you are using the ma-
chine, DO NOT start, operate or service it until
you have read and understand the contents of
this manual.
NORMAL OPERATION
CAUTION
BEFORE operating the disc mower, review
and comply with ALL SAFETY recommenda-
tions set forth in the SAFETY chapter of this
manual.
WARNING
DO NOT use the DM1162 or DM1165 mower for
roadside cutting. DO NOT operate near
people.
EMERGENCY SHUTDOWN
If crop material is clogging the cutterbar or a foreign
object enters the cutting area, STOP cutting material
IMMEDIATELY by disengaging the tractor PTO and
stopping forward movement. Then, exercise the MAN-
DATORY SAFETY SHUTDOWN PROCEDURE
(page 8) BEFORE leaving the tractor seat to remedy the
problem.
GROUND SPEED
The disc mower can be operated in a wide range of
ground speeds depending on crop conditions and
terrain. Any change in ground speed should be made by
changing tractor gears and NOT by increasing or
decreasing tractor engine RPM.
START- UP
WARNING
BE SURE ALL factory- installed guards and
shields are in place and properly secured BE-
FORE starting the tractor engine. DO NOT op-
erate near people. The protective cover will
contain most debris and foreign objects but
may NOT stop all such material.
When changing the cutterbar from the transport to the
normal operating position and BEFORE engaging the
PTO, ALWAYS allow several minutes for the oil in the
cutterbar to spread. To avoid unnecessary strain on the
disc mower components, ALWAYS engage the tractor
PTO slowly and with the tractor engine at less than half
throttle. Bring the unit to PTO speed BEFORE starting
to cut.
IMPORTANT: Always operate the mower at 540
rpm PTO speed! Operating above 540 rpm could
cause excessive vibration, wear and possible
component failure. Operating the unit below 540
rpm will increase the chances of plugging.
UNPLUGGING
In certain crop conditions, it is possible for the disc
mower to plug. When plugging occurs, the drive belts
will slip.
To clear a plugging condition in the area of the discs:
1. Disengage the PTO.
2. Raise the mower several inches.
3. Exercise the MANDATORY SAFETY SHUT-
DOWN PROCEDURE (page 8) and apply the
tractor parking brake.
4. Carefully clear the plug from the cutterbar area.
If the plugging occurs frequently, refer to the Trouble-
shooting chapter for additional directives.