Legend 780 User manual

OWNERS MANUAL
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CONTENTS
CONTENTS PAGE
Introduction............................................................................................................................................ 1
SAFETY INFORMATION
Safety Alert Symbol............................................................................................................................... 2
Safety Information ............................................................................................................................... 3-5
Safety Decals ......................................................................................................................................... 6
Tractor & Safety Pointers ...................................................................................................................... 7
ASSEMBLY INSTRUCTIONS
Attachin Loader ................................................................................................................................... 8
Attachin Bucket ................................................................................................................................... 9
Detachin Loader.................................................................................................................................. 10
Detachin Bucket………………………………………………………………………………………11
OPERATING INSTRUCTIONS
Operational............................................................................................................................................ 12
SERVICE AND MAINTENANCE
780 SL & NSL Specifications............................................................................................................. 13-14
Loader Inspection, Service, and Maintenance ...................................................................................... 15
780 SL Hydraulic System Parts List..................................................................................................... 16
780 SL Hydraulic System Parts Dia ram ............................................................................................. 17
780 NSL Hydraulic System Parts List .................................................................................................. 18
780 NSL Hydraulic System Parts Dia ram .......................................................................................... 19
780 NSL Loader Parts Dia ram............................................................................................................ 20
780 NSL Parts Identification Schedule............................................................................................... 21-22
780 SL Loader Parts Dia ram............................................................................................................... 23
780 SL Parts Identification Schedule.................................................................................................. 24-25
Euro Adapter Parts Dia ram…………………………………………………………………………..26
Euro Adapter Parts Identification Schedule………………………………………………………… 27
Bucket Parts Dia ram ........................................................................................................................... 28
Bucket Parts Identification Schedule .................................................................................................... 29
Multi-Faster & Accumulator Kit Parts Dia ram .................................................................................. 30
Multi-Faster & Accumulator Kit Parts Identification Schedule ........................................................... 31
Hydraulic Cylinder Information ........................................................................................................... 32
Hydraulics Information......................................................................................................................... 33
3 1/4” Cylinder Service Kit................................................................................................................... 34
Hydraulic Cylinder Parts List ............................................................................................................... 35
Hydraulic Cylinder Parts Dia ram........................................................................................................ 36
Piston and Gland Dia ram ................................................................................................................... 37
LIMITED WARRANTY INFORMATION
Limited Warranty.................................................................................................................................. 38
TORQUE SPECIFICATIONS
Torque Specifications ........................................................................................................................... 39

INTRODUCTION
Koyker Manufacturin Inc. has en ineered and manufactured a Le end Loader that includes the features
YOU want in a top-of-the-line loader, includin :
-Greaseless Pivot Connections
-Lar e Chrome Pivot Pins
-Bucket Linka e for Increased Roll Back An le and Force
-Euro Attachment System
-Dual Torque Tubes
-Rounded Back Bucket
-Soft Ride Nitro en Accumulator (Optional)
Koyker Manufacturin Inc. has created one of the best loaders in the market throu h consumer research,
product testin and by usin the latest technolo ical enhancements to deliver what you’ve been askin
for… a loader that will et the job done with ease.
TO THE PURCHASER
You have purchased an excellent product. With proper care and use, it will ive you years of ood safe
service. Use only KOYKER or KOYKER approved parts in the eneral maintenance and repair of your
equipment. Please fill o t ownership registration card as soon as possible.
Should you have any questions, comments, improvements, or su estions re ardin the contents of any of
the manuals provided, please contact Koyker Manufacturin Company. (800-456-1107 or E-mail
koyker@koykermf .com)
We care abo t yo r safety!
Remember ALL safety decals are no charge from the factory. Please replace all safety decals if
missing or damaged. Yo r safety is important to s.
Pa e 1

SAFETY ALERT SYMBOL
The symbol shown below is used to call your attention to instructions concernin your personal safety.
Watch for this symbol it points out important safety precautions. It means ATTENTION! Become Alert!
Yo r Personal Safety Is Involved!
Read the messa e that follows and be alert to the possibility of personal injury or death.
DANGER: Indicates an imminently hazardous situation that, if not avoided, will result in death or serious
injury.
WARNING: Indicates a potentially hazardous situation that, if not avoided, could result in death or
serious injury.
CAUTION: Indicates a potentially hazardous situation that, if not avoided may result in minor or
moderate injury.
WARNING! Anyone who will operate or work around a front-end loader should first read
this manual.
Pa e 2

SAFETY
Improper use of a loader can cause serious injury or death. The followin safety precautions, and those
iven on the tractor mount installation instructions, should be thorou hly understood before attemptin to
operate this machine.
BEFORE OPERATING:
Carefully study and understand this manual, the specific tractor mount instructions, and the
attachment(s) manual(s).
Prior to operation, inspect the loader for system leaks and dama ed, missin , or malfunctionin
components in an effort to avoid the possibility of a dan erous failure involvin structural
members or hydraulic system components.
Be certain any repairs necessary are completed prior to loader operation.
Follow recommended maintenance procedures and precautions on Pa e 15.
Completely familiarize yourself and others involved with the operation of the hydraulic control
valve before operatin the loader.
Be certain all bystanders are clear of the machine and operation area prior to operation.
It may be necessary to add wheel ballast or rear wei hts as recommended by the tractor
manufacturer to maintain stability of the machine to prevent tippin or upset which could result in
serious injury or death. See mountin instructions for specific information.
It is recommended that both front and rear wheel treads be set to the widest recommended width to
prevent tippin or upset which could result in serious injury or death.
This loader is desi ned for farm type operations such as snow removal, barn and feedlot cleanin ,
li ht commercial or li ht radin and di in . It’s desi n is NOT intended for industrial use.
DURING OPERATION:
Never operate the machine other than from the tractor operator’s seat.
Be sure operatin area is clear of others durin machine operations.
Never lift, hoist, or carry humans in the bucket or on any portion of the loader or loader
attachments. Failure to heed, may result in serious injury or death.
Pa e 3

SAFETY CONTINUED
Transport the machine load at the slowest speed possible and with the loader boom at the lowest
transport position to avoid tippin or upsettin , which may result in serious injury or death.
Be extremely careful when workin on inclines or near loose fill, rocks, and holes as they can cause
tippin or upsettin which may result in serious injury or death.
Be certain to avoid overhead electrical wires when operatin loader. Contact with power lines may
cause serious injury or death.
Avoid sudden stops when lowerin or liftin the loader boom to prevent loss of control over the
machine and/or load, which may result in serious injury or death.
Use maximum ballast and the widest recommended wheel settin on your tractor when handlin
lar e shiftable loads.
Never attempt to ram with the bucket at hi h speed or full tractor power. Sudden impact may result
in structural failure and possible serious injury or death.
Never adjust or perform maintenance on the loader or tractor with the unit in motion, or without
power source locked out.
Never et under bucket or lift arms or reach throu h the lift arms or bucket linka e when the loader
is in operation. Inadvertent movement may cause serious injury or death.
FOLLOWING OPERATION:
Whenever the machine is not in operation, lower the loader boom and set the tractor brakes,
disen a e drive, shut the en ine off, and remove the i nition key before dismountin the tractor.
If loader is to be disen a ed from tractor, be sure the loader is securely supported on a hard, level
surface and the stand is securely en a ed. Be certain all connections between tractor and loader are
free before disen a in .
TRANSPORTING:
Use safety li hts and SMV emblem in addition to whatever local codes require when equipment is
bein transported on the road or hi hway. Check with proper authorities for le al limitations.
Transport all loads at a slow and safe speed.
Carry the load as low as possible and maintain adequate visibility and ood round clearance at all
times.
Pa e 4

SAFETY CONTINUED
PERFORMING MAINTENANCE:
Carefully review, understand, and follow the “maintenance” section in this owners manual before
attemptin to service loader.
Lower the bucket or attachment to the round, shut off tractor en ine, and relieve pressure in the
hydraulic system before adjustin , or servicin the loader.
Escapin hydraulic oil under pressure can penetrate the skin. Never use any part of your body to
check for hydraulic leaks. Use cardboard when checkin for leaks. See Fi . 5-1. Relieve hydrau-
lic pressure before disconnectin any hydraulic line. Failure to heed may result in serious injury or
death.
Before disconnectin hydraulic lines, lower the loader and attachments. Lock out the hydraulic
supply and relieve all hydraulic pressure.
Replace any dama ed or painted-over decals. See Pa e 6 for replacement decals.
REMEMBER:
1. Move Slowly!
2. Always use care and common sense!
3. Be careful for your own sake and for that of others!
4. Koyker Mf . Co. includes all reasonable means for accident prevention except a safe and
careful operator.
FIG. 5-1
Pa e 5

SAFETY DECALS
Pa e 6

The use of ood jud ment and common sense is necessary by the operator in usin this loader. The front
and rear wheels should be set for the widest wheel tread to assure best stability. Use extra caution when
rear wheel wei hts and tire ballast are added to a loader-equipped tractor. DO NOT ram into frozen dirt
piles, frozen manure piles, ice, etc., with reat momentum where sudden shock loads are encountered.
Serious and costly dama e may result to both the loader and the tractor.
When scrapin or back dra in do not extend the attachment cylinders more than one half of the
cylinder’s stroke. A limited amount of levelin may be done, when the loader valvin is arran ed with a
float control. This will prevent dama e to cylinder rods. Never ride in the bucket.
Before operatin the loader, be sure no one is standin near it. Only one person, the operator, should be on
the tractor. Remain at the controls and under no circumstances leave the tractor unattended with the bucket
in a raised position.
Never lift a person in the bucket or walk under a raised bucket.
Never drive your loader-equipped tractor down a hill that is steeper than 15 de rees. Carry all loads low
and use care on side hills.
Always keep unused PTO shaft clutch levers disen a ed.
Keep hands, feet, and clothin away from all movin parts.
Hydraulic oil, under pressure, can cause injury. Be sure that all connections are ti ht and that all pressure
is relieved before disconnectin any lines.
Care must be taken with your loader cylinders. Nicks, scratches, rust, or other shaft dama e can result in
worn packin causin cylinder leaka e and subnormal performance.
MOVE SLOWLY
USE COMMON SENSE
BE CAREFUL FOR YOUR OWN SAKE AND THAT OF OTHER PEOPLE
TRACTOR & SAFETY POINTERS
Pa e 7

ATTACHING LOADER
IMPORTANT:
Never attempt loader attachment on rades which are not reasonably level.
1. Check to be sure that the surfaces of the mounts are free of
obstructions. (Fi 8-1)
2. Drive the tractor slowly and carefully in between the loader arms
only far enou h to permit hook-up of the hydraulic system hoses.
(Fi . 8-2)
3. Once all hoses have been properly coupled drive the tractor forward
checkin to insure that the bottom mount shaft on each loader upri ht
clears the bottom cradle on each mount tower. (Fi . 8-3)
4. Allow the ali nment collars at the top of each upri ht to settle a ainst
the top cradle of each mount tower. (Fi . 8-3)
5. To lock the loader onto the mount, install the two 694997 – 1 1/2”
diameter mount pins into the outside of the upri ht throu h the mount
tower, and trap the mount pin with a 683912 lockpin on the outside of
each loader upri ht. (Fi . 8-3)
6. After both upri hts are secured to the mounts, raise the loader to
disen a e and store the loader stands with provided mount pins. (Fi
8-4) & (Fi 8-5)
7. Prior to operation, be certain to review all safety and operation
information contained within this manual.
Pa e 8
Fi 8-1
Fi 8-4Fi 8-5
Fi 8-3
Fi 8-2