Erskine Attachments 620RP User manual

Models 620RP - 725RP - 825RP
Rear Pull – CAT I 3 Point
Snow Blowers
Operator’s Manual
Set-Up Assembly and
Parts Information
D
Do o n no ot t u us se e o or r o op pe er ra at te e t th hi is s m ma ac ch hi in ne e u un nt ti il l t th hi is s
manual has been read and understood.
Read the Operation & Maintenance Manual entirely. When you see this
symbol, the subsequent instructions and warnings are serious – follow
without exception. Your life and the lives of others depend on it!

2
IMPORTANT
If this machine is used by an employee or is loaned or
rented to others, make certain that the operator(s) prior
to operating:
•Is instructed in safe and proper use.
•Reviews and understands the operation and
maintenance manual(s) pertaining to the machine.
Remember, the operator is responsible for the safe
operation and maintenance of the machine. Most
accidents can be prevented. Good safety practices not
only protect you, but also the people around you.
NOTE: Erskine Attachments LLC reserves the right to make
improvements in design or changes in specifications at any time
without notice and without incurring any obligations to install them on
units previously sold.

3
TABLEOFCONTENTS
FOREWORD 4
SAFETY 5
SERIAL NUMBER/DECAL LOCATION 6-7
MOUNTING INSTRUCTIONS 8
OPERATING INSTRUCTIONS 9-10
ROUTINE MAINTENANCE 11-16
SET UP ASSEMBLY 17-23
PARTS INFORMATION 24-31
GENERAL SPECIFICATIONS 34
WARRANTY 35
REFERENCE INFORMATION
Write the serial number for your attachment in the spaces below. Always refer to this serial
number when calling for service or parts.
Serial Number………….._____________
YOUR ATTACHMENTS DEALER
ADDRESS:
PHONE:
CONTACT:

4
Operation and Maintenance Manuals are written to
give the owner/operator instructions on the safe
operation and maintenance of the product. For you
r
safety and the safety of other persons, you must
not operate, service, inspect or otherwise handle
this equipment before you have reviewed and
understood the Operation and Maintenance
Manual(s) pertaining to the tractor (also referred to
as “machine”) and the tractor mounted work tool
(also referred to as “attachment”).
Throughout this manual reference may be made to
the left hand (LH) or right hand (RH) side. These
terms are used as viewed from the operator’s seat
facing forward.
In order to get the optimum performance and
efficiency that has been designed into this product,
read this manual thoroughly before setting-up,
operating, or performing maintenance procedures
on the machine.
It is the responsibility of the user to read the
operator’s manual and comply with the safety
instructions, operating instructions and
maintenance guidelines set forth in this manual.
The user is responsible for inspecting the machine,
power unit and attachment daily, and for having
parts repaired or replaced when continued use
would cause damage, excessive wear to othe
r
parts or make continued operation unsafe.
The signal words CAUTION, WARNING, o
r
DANGER are used to indicate degree of hazards
and to warn against unsafe practices that may
cause personal injury and are used with
appropriate safety instructions. These signal words
are not to be ignored; your safety is involved.
CAUTION: Indicates a potentially
hazardous situation which, if not
avoided, may result in minor o
r
moderate injury.
WARNING: Indicates a potentially
hazardous situation which, if not
avoided, could result in death o
r
serious injury.
DANGER: Indicates a potentially
hazardous situation which, if not
avoided, will result in death o
r
serious injury.
The word NOTE is used to convey information that
is out of context with the manual text; special
information such as specifications, techniques,
reference information, and other information of a
supplementary nature.
The word IMPORTANT, is used in the text when
immediate damage will occur due to imprope
r
technique or operation. IMPORTANT will apply to
the same information specified by NOTE, only of an
immediate and urgent nature.
Erskine Attachments LLC cannot anticipate every
possible circumstance that might involve potential
hazard. The safety messages found in this manual
and on the attachment are therefore not all
inclusive. If an operating procedure, tool device,
maintenance or work method not specifically
recommended is used; you must satisfy yoursel
f
that it is safe for you and others. You must also
ensure that the attachment will not be damaged o
r
made unsafe by the procedures you choose.
FOREWORD
To The Owner/Operator:
DO NOT use or operate this machine until this manual has been read and
understood. If you require additional information, contact your Dealer or
Erskine Attachments LLC.

5
SAFETY
Whenever you see this symbol, it means Attention!
Become Alert! Your Safety is involved.
Failure to obey warnings or instructions can cause
personal injury or death.
Operating instructions must be given to everyone before operating this machine and at least once a year
thereafter in accordance with OSHA regulations.
General Safety Instructions
•Read the operator’s manual for the tractor to
become totally familiar with the controls and
instruments. Know how to stop all equipment
operation in case of emergency.
•
A
void the possibility of personal injury and/o
r
machine damage. NEVER exceed the maximum
recommended input power or speed
specifications for the power unit.
•Check and be sure all operating controls are in
neutral before starting the engine.
•Disengage PTO drive, lower the attachment to
rest flat on the skid shoes, stop engine, set park
brake, and wait for all motion to stop before
leaving the operator’s seat for any reason.
WARNING: Before adjusting, o
r
servicing the power unit, stop the
engine and relieve all hydrauli
c
pressure.
•Keep all shields, guards, and covers in place.
•NEVER make adjustments, lubricate, or perform
any service on the machine, power unit o
r
attachment while it is in operation.
•Keep people at least 100 feet (30m) away from
the attachment, power unit or tractor when they
are in operation.
•NEVER operate near embankments or terrain
that is so steep that rollover could occur.
•NEVER allow children or untrained persons to
operate.
•DO NOT permit riders on equipment.
•Use adequate safety warning lights and devices
as required by local regulations.
•Obey all local laws and regulations regarding
machine operation on public property.
•
This attachment is designed to move snow only.
NEVER operate this attachment in a manne
r
other than the intended use.
•Do not modify equipment or add attachments that
are not approved by Erskine Attachments LLC.
•Remember, YOU are responsible for the safe
operation and maintenance of the equipment.
Most accidents can be prevented. Good safety
practices not only protect you, but also the
people around you.
Wear Protective Equipment
•Protective clothing and equipment should be
worn.
•Wear clothing and equipment appropriate for the
job. Avoid loose fitting clothing.
•Prolonged exposure to loud noise can cause
hearing impairment or hearing loss. Wear
suitable hearing protection such as earmuffs or
earplugs.
•Operating equipment safely requires the full
attention of the operator. Avoid wearing radio
headphones while operating equipment.
Avoid High Pressure Fluids Hazard
•Escaping fluid under pressure can penetrate the
skin causing serious injury.
•
A
void the hazard by relieving the pressure
before disconnecting hydraulic lines.
•Use a piece of paper or cardboard, NOT BODY
PARTS, to check for suspected leaks. Wear
protective gloves and safety glasses or goggles
when working with hydraulic systems.
•If an accident occurs, see a doctor immediately.
A
ny fluid injected into the skin must be
surgically removed within a few hours or
gangrene may result.

6
SERIAL NUMBER AND SAFETY DECAL LOCATIONS ________
Serial Number Location:
It is important to refer to the serial number of the attachment when making repairs or ordering parts. Early or
later models (identification made by serial number) may use different parts, or it may be necessary to use
different procedures in doing a specific operation.
E
D
A
C
BF
G
Serial Plate

7
SERIAL NUMBER AND SAFETY DECAL LOCATIONS_________
Safety Decals Locations:
The locations of the safety decals are shown. If these
decals are missing, damaged, or painted over they
must be replaced. Call Erskine Attachments LLC
(218-435-4045) for replacement decals.
A
Part number: 102935
Location: On each side of blower assembly
Quantity: 2
C
B
Part number: 201415
Location: Back right side of blower
Quantity: 1
D
E
Part number: 103206
Location: Chute rotation chain cover gear
shield & chain cover on left side
Quantit
y
: 3
Part number: 102957
Location: Each side of chute
Quantity: 2
Part number: 102946
Location: Front of chute assembly
Quantity: 1
F
Part number: 200001
Location: Right rear of blower housing
Quantity: 1 (OPTIONAL)
Model No. 300794
Location: Back RH of blower assembly
Quantity: 1
G

8
USER’S INSTRUCTIONS FOR MOUNTING THE SNOW BLOWER
After the initial set-up assembly is completed, use the following procedure to mount the attachment to the tractor
for user operation.
1. Back the tractor up to the snow blower aligning
the three-point hitch to the blower arms. Apply
the park brake and shut off engine. Slide the
tug arms over the lower lift pins and secure with
lynch pins. Install the upper pin and secure
with the lynch pin.
2. Connect the driveline to the tractor PTO. Be
sure the retaining pin snaps into position on the
PTO shaft.
IMPORTANT: Maximum driveline extension is 9
inches (230.4mm) for the 620RP, and 17 inches
(431.8mm) for the 725RP and 825RP. This allows
for a minimum overlap of 5 inches (127mm).
Extending beyond these lengths could allow
driveline separation and damage will occur. Also,
be sure the driveline does not bottom out when the
blower is fully raised.
3
. If purchased with the hydraulic chute rotation o
r
deflector, connect the chute rotator hoses to the
couplers. Manual rotation is standard.
NOTE: Make sure both the male and female quic
k
couplers are clean before attaching.
IMPORTANT: Hose routing is the responsibility o
f
the operator. Route the hoses to avoid pinching,
rubbing or stretching. Routing may vary dependin
g
on the model of tractor and position of hydrauli
c
quick couplers. Damaged hoses are NO
T
covered under warranty.
4. Mounting is now complete and you are ready to
blow snow. Use the reverse order of the above
instructions to dismount the snow blower from
the tractor.
CAUTION: Read the operating an
d
safety instructions in this manua
l
before using the snow blower.

9
OPERATING THE SNOW BLOWER
WARNING: DO NOT operate from any position except seated in the operator’s seat with
the seat belt fastened. DO NOT permit riders.
1. Before starting the tractor, check to see that the
blower is nearly level to the ground. This
creates a straighter driveline angle and can be
accomplished by adjusting the tractor’s upper 3-
point arm.
NOTE: The blower can be tilted rearward in varying
degrees depending on tractor size and PTO shaft
location.
IMPORTANT: It is extremely important to keep the
driveline angle as straight as possible while the
blower is under load. Driveline angle must no
t
exceed 20 degrees at any time.
2. Skid shoes are used to control the minimum
desired cutting depth. If necessary, to adjust the
skid shoes, raise and block the snow blower.
Remove the skid shoe lynch pins and adjust the
shoes up or down equally to the desired cutting
depth. Reinstall the lynch pin.
WARNING: To prevent personal
injury, never work on a raised
implement without using additional
support blocking or jack stands.
3. Before starting the tractor, adjust the chute
deflector to the desired angle to control snow
discharge angle and distance. To adjust,
remove the lock pin, slide the adjusting linkage
up or down to the desired deflector angle and
reinstall the linkage lock pin and retaining clip.
NOTE: Blower will obtain the best casting distance
with deflector in the up most position.

10
OPERATING THE SNOW BLOWER_______________
4. Check to be sure all tractor-operated controls
are in the neutral position and start the engine.
CAUTION: Be sure all by-standers are
clear of the equipment before starting.
Keep bystanders at least 100 feet
(30m) away when in operation.
5. With the engine idling, slowly raise the blower
with the tractor’s 3-point hitch and check to see
that the driveline does not bottom out when in
the fully raised position or has less than 5” of
telescoping overlap when in the fully lowered
position.
6. (If applicable) Check the hydraulic remote
functions for the chute rotator. Rotate the
chute toward a clear area.
Lower the snow blower to rest on the skid shoes.
8. Engage the tractor PTO system (see tracto
r
operating manual).
IMPORTANT: To prevent the possibility of damage,
always idle the engine when engaging o
r
disengaging the PTO.
9. Select the tractor gear that best suits the
conditions and operate the engine at full
throttle. Start the tractor moving forward into the
snow. Blow the snow toward a clear area.
When possible direct snow discharge
downwind.
NOTE: Tractor forward speed can be varied
according to tractor power, snow depth and density.
Always operate at full throttle when blowing snow,
for maximum snow blower efficiency.
CAUTION: Flying debris can injure
bystanders and pets as well as damage
property. Know your work area. Avoid
obstructions and/or other debris.
NOTE: If surface to be cleaned is very dense o
r
compacted snow, the blower should be resting on
the skid shoes during operation with the 3-point
hitch in the “float” position. If operating in soft snow
conditions, the blower can be carried slightly above
the ground with the 3-point hitch to prevent
gouging.
WARNING: Disengage PTO shaft, lowe
r
blower to rest on skid shoes, stop
engine, set the park brake and wait fo
r
all motion to stop before leaving th
e
operator’s seat for any reason.

11
ROUTINE SNOW BLOWER MAINTENANCE
It is the operator’s responsibility to make daily inspections of the tractor and attachment for damage, loose
bolts, fluid leaks, or anything else that could cause a potential service or safety problem. Preventive
maintenance is the easiest and least expensive type of maintenance.
IMPORTANT: Bolts and set screws can loosen after initial usage. After first two hours of operation check all
bolts and set screws.
WARNING: Lower the attachment to rest on the skid shoes, shut down the engine, wait for
all motion to stop, and set park brake before leaving the operator’s seat to perform service
of any kind.
Use No. 2 lithium base gun grease when lubricating
all Snow Blower grease fittings.
Grease the three chute roller guides every 8 hours
of operation.
IMPORTANT: These are requirements. It is the
responsibility of the owner/operator to make
sure the attachment is serviced on a daily
basis. Improper maintenance can cause
extensive damage to the attachment and/or
your equipment.
Grease the bearing on each end of the auger afte
r
every 40 hours of operation.
8
40
LUBRICATION
Clean engine oil
No. 2 Lithium
base gun grease

12
Grease the PTO driveline U-
j
oints and telescoping
slide after every 4 hours of use. Only grease the
telescoping slide with the driveline compressed.
Grease the bearing on the front end of the fan shaft
after every 40 hours of operation.
Use clean engine oil to lubricate the auger drive
chain and the chute rotator chain after every 40
hours of operation.
ROUTINE SNOW BLOWER MAINTENANCE____________
LUBRICATION (continued)
40
40
4

13
ROUTINE SNOW BLOWER MAINTENANCE____________
AUGER DRIVE CHAIN ADJUSTMENT
A properly tensioned auger drive chain will extend
the roller chain life.
To adjust the chain tension, loosen the locking bolt
and push the chain tightener bracket down until all
slack in the chain is removed. After adjustment,
tighten the locking bolt to prevent the roller from
rotating.
IMPORTANT: Do not overtighten roller chains.
Tighten only enough to remove slack.
A
fter the snow season is over, we recommend
greasing the auger drive gears to prevent
excessive corrosion.
To do this, remove the top cover and apply a
generous amount of grease to the gear teeth. It is
a good idea to inspect the gears at this time for
excessive wear or play. Turn the blower over by
hand to distribute the grease evenly on the gear
teeth.
MAINTENANCE FOR BETWEEN SEASON STORAGE

14
ROUTINE SNOW BLOWER MAINTENANCE
PTO DRIVELINE SHEAR BOLT REPLACEMENT
DISCHARGE CHUTE ROTATOR ADJUSTMENT
The PTO driveline shear coupler is located on
the tractor PTO coupler.
1. Align the holes in the coupler flange.
2. On all models install one 3/8” x 1” grade 2
bolts with lock nuts.
IMPORTANT: Shear bolts are used to protect
the blower from severe damage.
NEVER USE GRADE 8 BOLTS!
The auger drive is shear bolt protected in the event
the auger should strike a solid object. The auge
r
drive shaft shear coupler is located on the left side
of the gearbox, under a shield. If sheared, align the
holes in the coupler flange and install a 5/16” x 1-
1/4” NC Grade 2 bolt (B) and lock nut (A).
If the shaft and coupler need to be separated,
unscrew the grease zerk (C) and release the
retaining steel ball through the grease zerk hole.
Reverse these steps to reassemble.
Hydraulic Rotation
To adjust the discharge chute roller chain:
1. Remove the two bolts securing the chute
rotator chain shield. Remove the shield.
2. Loosen the bolt and nut securing the orbit
motor. Take all of the slack out of the chain
by pivoting the motor outward. Tighten the
bolt and nut.
3. Reinstall the sprocket and chain shield.
IMPORTANT: Do not overtighten roller chains.
Tighten only enough to remove slack.
AB C
AUGER SHAFT SHEAR COUPLER

15
ROUTINE SNOW BLOWER MAINTENANCE____________
DISCHARGE CHUTE ROTATOR ADJUSTMENT (continued)
Manual Rotation
To adjust the discharge chute cable:
1. Rotate chute all the way to side needing
adjustment.
2. Loosen the setscrew holding the cable in
place.
3. Using pliers, pull the cable through the hole
until the cable is tight.
4. Tighten the setscrew in place.

16
SET UP ASSEMBLY
Remove the crate and supporting wood brackets.
Bolt the hand crank support bracket to the upper
arm and insert the crank tube. Bolt the lower end
of the crank tube to the spool. The crank handle
length is adjustable. Start with it in the shortest
position until you can mount the blower to the
tractor.
IMPORTANT: Make sure the crank handle will not
contact you or any part of the tractor through the
entire range of motion.
UNCRATING AND SETUP

17
SET UP ASSEMBLY_______________________
MANUAL ROTATION CHUTE INSTALLATION
Remove one of the roller guides from the blowe
r
housing by removing the bolt securing the rolle
r
guide.
A
fter unpacking the chute, slip the chute into the
grooves on the two remaining roller guides.
Install the roller guide and bushings with bolt and
lock nut.
IMPORTANT: Tighten each lock nut to 75 ft-lbs.
Rotate the chute so it is facing the front right corne
r
of the blower body as shown.
Feed one end of the cable through the rear hole o
f
the spool, through the cable guide link and around
the back of the chute as shown. Use an Allen
wrench to lock the cable in place leaving a short tail
sticking out.
Run cable through chain links backwards in such a
way that the cable will bind when tightened.
Method can vary as long as cable binds tightly to
the chute when tightened.

18
Thread cable through cable guide as shown.
Turn crank handle clockwise to wind up the cable
on the lower part of the spool as shown. Keep
tension on the loose end of the cable while
cranking so the cable on the spool doesn’t unwind.
Stop cranking when the chute faces the front left
corner of the blower body. (Chute should rotate
clockwise as viewed from above). The position o
f
the chute does not need to be exact, but can be
varied to help with the next step.
Thread the remaining end of the cable though the
spool as shown. The crank position can be
changed slightly to aid in the threading of the cable
and the tightening of the
A
llen screw. Make sure
the cable on the spool remains tight. Pull all the
slack out of the cable before tightening Allen screw.
Trim the cable ends as required.
SET UP ASSEMBLY_______________________
MANUAL DISCHARGE CHUTE INSTALLATION (continued)

19
SET UP ASSEMBLY
Remove one of the roller guides from the blowe
r
housing by removing the bolt securing the rolle
r
guide.
Remove the chain shield from the blower housing.
A
fter unpacking the chute, slip the chute into the
grooves on the two remaining roller guides.
Reinstall the roller guide and bushing with the bolt
and lock nut.
IMPORTANT: Tighten each lock nut to 75 ft-lbs.
Rotate the chute to the straightforward position.
Loosen the motor mounting bolts. Push the motor
all the way towards the chute. Install the No. 40
roller chain around the sprocket.
Tighten the chain by moving the motor outward
to remove all slack in the chain. Tighten the
motor bolts.
CAUTION: Do not operate the
snow blower without the chain
shield in place.
Install the chain shield and retaining bolts.
NOTE: To remove the chute, use the reverse
order of the above.
HYDRAULIC DISCHARGE CHUTE INSTALLATION

20
SET UP ASSEMBLY______________________
DRIVELINE INSTALLATION
Install keyed yoke of the driveline onto the snow
blower gear box shaft with a 3/8” x 2” key. Secure
with 3/8” grade 5 bolt and tighten set screw.
WARNING: Be sure the PTO maste
r
shield is secured in its operatin
g
position.