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The model SG-26 requires a tractor of at least 22 hp or

up to a maximum of 45 hp and a Category I, 3 pt. hitch.

The model SG-36 requires a tractor of at least 45 hp or

up to a maximum of 100 hp and a Category I or II, 3 pt.
hitch.

The tractor also needs lift arm stabilizer bars or sway

blocks to control side movement of the stump grinder.
Adjust as tightly as practical for best performance.

Check the tractor’s 3 pt. hydraulic lift system. Refer to

your tractor operator’s manual or dealer for any adjust-
ments necessary to put the hydraulic system in good
working order. (I&T shop manuals will list most specifica-
tions and adjustment instructions – available from most
farm equipment dealers.)

Tractor must be equipped with two (2) independent pair

of remote hydraulic outlets to operate these stump
grinders.

Be sure tires and rims are in good condition. Inflate tires

to the proper recommended air pressure.

Check the tractor master shield over the PTO stub shaft.

Make sure it is in good condition and fastened securely
to the tractor. Purchase a new shield if old shield is
damaged or missing. (You may have to use a tractor
salvage yard for replacement parts on older tractors.)

It is recommended that a ROPS (Roll-Over Protection

Structure) and a seat belt be installed on all tractors.
Keep foldable ROPS systems in “locked up” position at all
times. Contact your local dealer for a ROPS for your
tractor.

Most swinging drawbars will have to be moved to a

forward position or removed.

Check the tractor swing-

ing drawbar for interference with the front of the stump
grinder. The swinging drawbar can be moved forward on
some tractors or it can be removed.

It is recommended that only tractors with wide front

axles be used with these stump grinders. Tricycle front
wheel arrangements are inherently unstable and tractor
roll-over accidents are more likely to occur.

Be sure your tractor is in good condition. Read all

the safety precautions and make sure all tractor
operators are familiar with the safety rules of
operation.

Figure 1.

Tractor Stability

When using the unit, a minimum 20% of tractor and

equipment weight must be on tractor front wheels.
Without this weight, tractor could tip up, causing
possible loss of control and possible personal injury
or death. The weight may be attained with a front end
loader, front wheel weights, ballast in tires or front
tractor weights. When attaining a minimum 20% of
tractor and equipment weight on the front wheels,
you must not exceed the ROPS weight certification.
Weigh the tractor and equipment. DO NOT GUESS
OR ESTIMATE!

A heavy load can cause instability in driving a

tractor. Make sure the front of the tractor is properly
counterbalanced with weights. Always drive slowly
– especially around turns. An unstable tractor could
steer badly and possibly tip over, causing injury or
death.

The operator is responsible for the safe operation of this

stump grinder. The operator must be properly trained.
Operators should be familiar with the stump grinder and
tractor and all safety practices before starting operation.
Read the safety rules and safety signs on pages 5-15.

TRACTOR REQUIREMENTS
AND PREPARATION

——————————————————

The models SG-26 and SG-36 PTO driven stump

grinders are designed to mount on tractors that have a 3
pt. hitch and a 540 rpm PTO (power takeoff) in good
working condition.

INSTRUCTIONS

WARNING

WARNING

CAUTION

Summary of Contents for SG-26A

Page 1: ...ssemblies if at all possible 6 After completing assembly thoroughly inspect the machine to be sure that all nuts bolts hydraulic fittings or any other fastened assemblies have been thoroughly tightene...

Page 2: ...d or Operator s responsibility to read the Operator s Manual to operate lubri cate maintain and store the product in accordance with all instructions and safety procedures Failure of the operator to r...

Page 3: ...other than cost approved by Worksaver duty taxes charges for nor mal service or adjustments loss of crops or any other loss of income rental of substitute equipment expens es due to loss damage detent...

Page 4: ...iameter 26 36 Grinding Wheel Speed rpm 810 788 Cutting Wheel Tip Speed ft min 5 515 7 430 Cutting Arc degrees 45 45 Cutting Teeth 33 42 Gearbox Ratio 1 1 5 1 1 46 Gearbox hp rating 60 hp 100 hp Input...

Page 5: ...e stump grinder thoroughly after assembly to be certain it is set up properly The following checklist is a reminder of points to inspect Check off each item as it is found satisfactory or after proper...

Page 6: ...cates a imminently hazardous situation that if not avoided MAY result in MINOR INJURY Identifies special instructions or procedures that if not strictly observed could result in damage to or destructi...

Page 7: ...quipment In addition to the design and configuration of this implement including safety signs and safety equipment hazard control and accident prevention are dependent upon the awareness concern prude...

Page 8: ...t from falling off the tractor particularly during a turnover when the operator could be pinned under the ROPS or the tractor Keep foldable ROPS systems in locked up position at all times PROLONGED EX...

Page 9: ...ou Keep all helpers and bystanders at least a hundred feet 100 ft from an operating stump grinder Only prop erly trained people should operate this machine The majority of accidents involve entangleme...

Page 10: ...d for use only on tractors with 540 RPM power takeoff Never operate tractor and stump grinder under trees with low hanging limbs Operators can be knocked off the tractor and then run over by the equip...

Page 11: ...tip over causing personal injury or death The weight may be attained with a front end loader front wheel weights ballast in tires of front tractor weights When attaining a minimum 20 of tractor and eq...

Page 12: ...lan your route to avoid heavy traffic Always install transport locks pins or brackets before transporting Do not drink and drive Watch for traffic when operating near or crossing roadways Turn curves...

Page 13: ...e unit is in a safe condition When completing a maintenance or service function make sure all safety shields and devices are installed before placing unit in service Never use your hands to locate a h...

Page 14: ...eep safety signs clean and legible at all times Replace safety signs that are missing or have become illegible Replaced parts that displayed a safety sign should also display the current sign Safety s...

Page 15: ...egible or parts replaced without Signs new Safety Signs must be applied New Safety Signs are available from your authorized distributor or factory BE CAREFUL Use a clean damp cloth to clean safety dec...

Page 16: ...New Safety Signs are available from your authorized distributor or factory BE CAREFUL Use a clean damp cloth to clean safety decals Avoid spraying to close to decals when using a pressure washer high...

Page 17: ...swinging drawbar can be moved forward on some tractors or it can be removed It is recommended that only tractors with wide front axles be used with these stump grinders Tricycle front wheel arrangemen...

Page 18: ...d stump grinder Secure with link pins and linch pins 4 Lift stump grinder and check to see that both 3 pt lift arms are the same height Adjust using crank if nec essary to level the implement from sid...

Page 19: ...DRIVELINE INSTALLATION cont 2 Pull driveline apart Attach outer female section to tractor PTO shaft Pull on driveline section to be sure that yoke locks into place 3 Hold driveline sections parallel t...

Page 20: ...the flow control on the remote hydraulic outlet block to minimum flow If your tractor does not have a flow control contact Worksaver Inc for a restrictor orifice fitting to reduce the flow This will...

Page 21: ...___ Review and follow safety rules and safety signs on pages 5 through 15 ____ Check that stump grinder is properly and securely attached to tractor ____ Make sure driveline spring activated locking p...

Page 22: ...he engine is at full PTO RPM Always bring the tractor engine to idle speed before disengaging the PTO NOTE To avoid damage to the clutch the cutter wheel should not be in contact with the stump when e...

Page 23: ...nder and the pressure control valve The rate of cut will depend on the type of tree condition of the wood and the condition of the carbide cutting teeth Excessive feed rates will either stall the engi...

Page 24: ...ed a cutting pass raise the cutting wheel slightly before returning to the start position Failure to do this will dull the teeth This is the same as why you always raise a file or hand hacksaw when ma...

Page 25: ...y terrain slow down and use extra care Read all the safety warnings in the front of the manual DO NOT OPERATE PTO DURING TRANSPORT When traveling on public roads whether at night or during the day use...

Page 26: ...nd the bolt holding the tooth could come loose Operating with a loose cutting tooth could result not only in the loss of the tooth but damage to the pocket in the wheel When rotating cutting teeth alw...

Page 27: ...p grinder is on the ground or shop floor This will position the bottom of the wheel just slightly above ground or floor level D Remove the side shield from the cutter wheel housing E Remove the cotter...

Page 28: ...lace discs after 1 16 wear Minimum disc thickness is 1 16 Figure 10 FIELD ADJUSTMENT If necessary adjust nut on any spring that is unequal Adjust all eight spring retaining nuts 1 3 of a turn 2 flats...

Page 29: ...ting too long with dull teeth 2 Operating below ground level in abrasive soil conditions 3 Operating wheel with teeth missing 4 Contact with foreign objects Replace or rotate teeth more often Do not g...

Page 30: ...ng into stump too rapidly or too great a cut 2 Worn or dull teeth 3 Tractor not large enough Take less cut or reduce hydraulic feed pressure see page 27 Rotate or replace teeth Use larger tractor Stum...

Page 31: ...manufacturer s recommen dations Allow time for oil to cool down Flow control should be at minimum flow If no flow control add restrictor orifice throttle valve to reduce flow see page 22 Stump grinder...

Page 32: ...on out side diameter of seal Drain oil to proper level Replace gearbox Replace gasket Tighten bolts Excessive vibration 1 Check gearbox bolts 2 Check for loose nut and cutting wheel 3 Check for bent o...

Page 33: ...32 SG 26A SG 36A STUMP GRINDER HYDRAULIC DIAGRAM PARTS LIST...

Page 34: ...33 SG 26A STUMP GRINDER PARTS DRAWING...

Page 35: ...34 SG 26A STUMP GRINDER PARTS LIST NOTE Order 811600 for repair kit containing 12 twelve carbide teeth bolts washers...

Page 36: ...35 SG 36A STUMP GRINDER PARTS DRAWING...

Page 37: ...36 SG 36A STUMP GRINDER PARTS LIST NOTE Order 811600 for repair kit containing 12 twelve carbide teeth bolts washers...

Page 38: ...37 SG 26A GEARBOX PARTS DRAWING LIST...

Page 39: ...38 SG 36A GEARBOX PARTS DRAWING LIST...

Page 40: ...39 SG 26A PTO SHAFT PARTS DRAWING LIST...

Page 41: ...40 SG 36A PTO SHAFT PARTS DRAWING LIST...

Page 42: ...llowed Make certain everyone is in the clear before starting tractor or raising or lowering equipment Operate the tractor and implement only while seated in the driver s seat Reduce speed when transpo...

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