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Model T28959 (Mfd. Since 2/19)

Review the troubleshooting procedures in this section if a problem develops with your machine. If you need
replacement parts or additional help with a procedure, call our Technical Support.

Note: Please gather the

serial number and manufacture date of your machine before calling.

SECTION 7: SERVICE

Troubleshooting

Symptom

Possible Cause

Possible Solution

Machine does not
start or a power-
supply fuse/breaker
trips immediately
after startup.

1. Plug/receptacle at fault/wired incorrectly.
2. Power supply circuit breaker tripped.

3.  Wiring broken, disconnected, or corroded.
4.  Motor ON/OFF switch at fault.
5.  Circuit board at fault.
6.  Motor at fault.

1. Test for good contacts; correct the wiring.
2. Ensure circuit is sized correctly and free of shorts.

Reset circuit breaker.

3.  Check/fix broken, disconnected, or corroded wires.
4.  Replace switch.
5.  Inspect/replace if at fault.
6.  Test/repair/replace.

Machine stalls or is
underpowered.

1. Operation overloading motor.

2.  Motor overheated.
3.  Motor bearings at fault.
4.  Motor at fault.

1. Reduce feed rate; replace grinding wheel; make

sure sharpener adjustments are correct for chain
(see

Page 20).

2.  Clean motor, let cool, and reduce workload.
3.  Test/repair/replace.
4.  Test/repair/replace.

Machine has
vibration or noisy
operation.

1. Motor or component loose.
2. Grinding wheel at fault/arbor hole not

round.

3. Machine incorrectly mounted to workbench.
4. Motor bearings at fault.

5. Motor shaft bent.

1. Replace damaged bolts/nuts or tighten if loose.
2. Replace grinding wheel (refer to

Page 20).

3. Tighten mounting hardware; use shims if necessary.
4. Test by rotating shaft; rotational grinding/loose shaft

requires bearing replacement.

5. Test with dial indicator and replace motor.

Cutter edges burned
or discolored; not
being properly
sharpened.

1. Not using correct grinding wheel.

2. Sharpener adjustments not correct.

3. User placing grinding wheel against cutter

too long or too hard during sharpening
operation.

1. Use the correct size and grit grinding wheel;

inspect, replace wheel (see

Page 19).

2. Make sure sharpener adjustments are correct for

chain (see

Page 19).

3. Raise the grinding wheel away from cutter as soon

as depth bolt hits depth stop.

Содержание T28959

Страница 1: ...RNING NO PORTION OF THIS MANUAL MAY BE REPRODUCED IN ANY SHAPE OR FORM WITHOUT THE WRITTEN APPROVAL OF GRIZZLY INDUSTRIAL INC AL20250 PRINTED IN CHINA V1 03 19 MODEL T28959 ELECTRIC CHAINSAW SHARPENER OWNER S MANUAL For models manufactured since 02 19 ...

Страница 2: ...ng grinding tool integrity and the usage of personal protective equipment The manufacturer will not be held liable for injury or property damage from negligence improper training machine modifications or misuse Some dust created by power sanding sawing grinding drilling and other construction activities contains chemicals known to the State of California to cause cancer birth defects or other repr...

Страница 3: ...ench Mounting 14 Assembly 15 Test Run 16 SECTION 4 OPERATIONS 17 Operation Overview 17 How the Chain Cuts 18 Grinding Wheel Selection 19 Wheel Inspection Ring Test 20 Installing Grinding Wheel 20 Adjusting Top Plate 21 Leading Edge 21 Sharpening Operation 22 Adjusting Clamp Plate Pressure 25 SECTION 5 ACCESSORIES 26 SECTION 6 MAINTENANCE 27 Schedule 27 Cleaning Protecting 27 Lubrication 27 Grindin...

Страница 4: ...ade every effort to be exact with the instruc tions specifications drawings and photographs in this manual Sometimes we make mistakes but our policy of continuous improvement also means that sometimes the machine you receive is slightly different than shown in the manual If you find this to be the case and the difference between the manual and machine leaves you confused or unsure about something ...

Страница 5: ... familiar with the names and locations of the controls and features shown below to better understand the instructions in this manual Motor Chain Clamp Lever Base Depth Stop Wheel Shield Depth Stop Knob ON OFF Switch Swing Arm Handle Spring Loaded Swing Arm Chain Holder Assembly Chain Holder Angle Knob Wheel Arbor Guard Grinding Wheel ...

Страница 6: ...embly A Clamp Plates Hold chain in place B Guide Adjustment Controls Controls how much to move chain in advancement guide C Advancement Guide Helps guide chain to next sharpening position D Chain Holder Angle Knob Loosen to change angle of chain holder assembly Tighten to lock angle in position E Chain Clamp Lever Tightens clamp plates Depth Stop Assembly F Depth Stop Knob Bolt Rotate clockwise to...

Страница 7: ...ang see Figure 5 where it fits into the guide bar groove The guide bar groove must match the width of the chain gauge Drive Link Tang Chain Gauge Figure 5 Chain gauge The chain pitch is the same for all links in the chain The smallest chain pitches for handheld chainsaws are commonly 1 4 3 8 and 0 325 Chain Pitch The distance between any three consecutive rivet centers divided by 2 is known as the...

Страница 8: ... from the top plate leading edge to the rear of the cutter link see Figure 8 Clearance allows the cutter link to pivot up into the wood and then down again Clearance Figure 8 Clearance Left Right Hand Cutters Chainsaws have left and right hand cutter links that together make the cut The sharpener must be set up differently when sharpening left and right hand cutters see Figure 9 because the angles...

Страница 9: ...0 Hz Full Load Current Rating 0 6A Minimum Circuit Size 15A Connection Type Cord Plug Power Cord Included Yes Power Cord Length 6 ft Power Cord Gauge 18 AWG Included Plug Type 1 15 Switch Type ON OFF Push Button Motor Main Horsepower 72W 1 10 HP Phase Single Phase Amps 0 6A Speed 5000 RPM Type Universal Power Transfer Direct Bearings Sealed Permanently Lubricated Main Specifications Operation Info...

Страница 10: ...id proof DANGEROUS ENVIRONMENTS Do not use machinery in areas that are wet cluttered or have poor lighting Operating machinery in these areas greatly increases the risk of accidents and injury MENTAL ALERTNESS REQUIRED Full mental alertness is required for safe operation of machin ery Never operate under the influence of drugs or alcohol when tired or when distracted For Your Own Safety Read Instr...

Страница 11: ... moving parts or flying debris Make sure they are properly installed undamaged and working correctly BEFORE operating machine FORCING MACHINERY Do not force machine It will do the job safer and better at the rate for which it was designed NEVER STAND ON MACHINE Serious injury may occur if machine is tipped or if the cutting tool is unintentionally contacted STABLE MACHINE Unexpected movement dur i...

Страница 12: ... volatile or flammable materials READ AND FOLLOW all safety instructions in the chainsaw owner s manual CHAIN INSPECTION Always visually inspect each chain component for severe wear or dam age before sharpening or re installing it on the chainsaw If in doubt do not sharpen or use the chain until the parts or the chain can be replaced PERSONAL PROTECTIVE EQUIPMENT Always wear leather gloves when ha...

Страница 13: ...o an undersized circuit To reduce the risk of these hazards avoid over loading the machine during operation and make sure it is connected to a power supply circuit that meets the specified circuit requirements For your own safety and protection of property consult an electrician if you are unsure about wiring practices or electrical codes in your area Note Circuit requirements in this manual apply...

Страница 14: ...Plug Neutral Hot When using extension cords make sure the cords are rated for outdoor use Outdoor use cords are marked with a W A or a W to signify their rat ing Always check to make sure that the extension cords are in good working order and free of any type of damage such as exposed wires cuts creased bends or missing prongs Extension cords cause voltage drop which may damage electrical componen...

Страница 15: ...ry them If any non proprietary parts are missing e g a nut or a washer we will gladly replace them or for the sake of expediency replacements can be obtained at your local hardware store Box 1 Figure 11 Qty A Sharpener 1 B Swing Arm Handle 1 C Depth Stop Knob 1 D Chain Holder Assembly 1 NOTICE If you cannot find an item on this list care fully check around inside the machine and packaging material...

Страница 16: ...round this machine Lock entrances to the shop or disable start switch or power connection to prevent unsupervised use Workbench Load Refer to the Machine Data Sheet for the weight and footprint specifications of your machine Some workbenches may require additional rein forcement to support the weight of the machine and workpiece materials Consider anticipated workpiece sizes and addi tional space ...

Страница 17: ...y into hole on swing arm see Figure 16 Figure 17 Attaching chain holder assembly to base Chain Holder Assembly Angle Knob Base Number of Mounting Holes 2 Diameter of Mounting Hardware Needed 3 8 Stop Flange Figure 15 Stop flange against the workbench Base To mount the sharpener 1 Place base flat on workbench slide it back until stop flanges see Figure 15 hit front of the workbench 2 Mark mounting ...

Страница 18: ...ine until all preceding setup instructions have been performed Operating an improperly set up machine may result in malfunction or unexpect ed results that can lead to serious injury death or machine property damage Serious injury or death can result from using this machine BEFORE understanding its controls and related safety information DO NOT operate or allow others to operate machine until the ...

Страница 19: ... Secures chain in chain holder assembly by tightening chain clamp lever 6 Adjusts chain holder assembly if necessary to desired angle 7 Secures chain holder assembly angle by tightening chain holder knob 8 Adjusts depth stop bolt as needed 9 Checks infeed and outfeed sides of machine to make sure workpiece can safely pass all the way through grinding wheel without inter ference 10 Puts on safety g...

Страница 20: ... and then forces it out again 3 4 to complete the cut Always use the chain manufacturer s specifica tions for the cutter specifications when sharpen ing the chain 1 Chain Travel 2 3 4 5 Figure 19 The self feeding motion of the cutter link during a cutting operation Sharp chains cause wood chips to fall away from the chainsaw A chip free chainsaw bar guides the chain straight through the cut Dull c...

Страница 21: ...ts Max Wheel Diameter 41 4 Wheel Thickness Range 1 8 3 16 Bore 7 8 Grit 100 Material Corundum We recommend that you always refer to the chain manufacturer s specifications when setting up the sharpener However you can use the chart in Figure 20 as a general guide when selecting the proper grinding wheel for your chainsaw Grinding wheels that break apart during operation can send high speed debris ...

Страница 22: ...with a piece of cord or string looped through bore 3 At four spots on wheel shown in Figure 21 gently tap wheel with a non metallic object such as a wooden mallet 4 An undamaged wheel will emit a clear metal lic ring or ping sound in each of the four spots A damaged wheel will respond with a dull thud that has no clear tone If you determine from the results of the ring test that the wheel is damag...

Страница 23: ... and break apart during operation which would send flying debris at the operator DO NOT overtighten 4 Loosen 3 Phillips head screws to remove wheel guard see Figure 22 Adjusting Top Plate Leading Edge It is necessary to grind the correct angle into the top and side plates see Figure 24 to form the top plate leading edge This edge forces wood chips away from the kerf Top Plate Leading Edge Figure 2...

Страница 24: ... protective equipment to reduce your risk from these hazards To set up holder for top plate leading edge 1 DISCONNECT MACHINE FROM POWER 2 Loosen chain holder angle knob see Figure 25 3 Rotate chain holder assembly to align mark with scale on base that matches chain then re tighten chain holder angle knob The chain holder angle scale on the front of the base see Figure 25 has angle marks to the le...

Страница 25: ...Top Plate Leading Edge on Page 21 This setting determines top plate angle 6 Use clamp lever see Figure 26 to set gap between clamp plates to match chain gauge Figure 26 Clamp lever and clamp plates Clamp Lever Clamp Plates If you suspect that any cutter top plate will be shorter than 1 4 long after sharpening replace that link or replace the chain to reduce risk of personal injury due to chain fai...

Страница 26: ...rpened angles 15 Connect sharpener to power turn ON and wait for grinding wheel to reach full speed 16 Using a slow and steady pace lower grinding wheel into first cutter link until depth bolt hits stop then let swing arm raise grinding wheel Figure 27 Advancement guide and controls Note Attaining the proper setting for the advancement guide requires trial and error This setting is critical to pro...

Страница 27: ...ide cap screws 5 Test clamping pressure of the plates with your chain If necessary repeat Steps 2 4 until clamping pressure meets your needs Figure 30 Clamp plate components 19 Re tighten clamp lever and repeat Steps 15 18 until all cutters for that side of chain have been sharpened 20 Turn machine OFF and wait for grinding wheel to completely stop then disconnect sharpener from power 21 Release c...

Страница 28: ...ctor 7 T20503 Face Shield Window T20452 Kirova Anti Reflective S Glasses T20451 Kirova Clear Safety Glasses T20456 Dakura Clear Safety Glasses Figure 32 Eye protection assortment Figure 78 Assortment of basic eye protection Basic Eye Protection T20501 Face Shield Crown Protector 4 T20502 Face Shield Crown Protector 7 T20503 Face Shield Window T20451 Kirova Clear Safety Glasses T20452 Kirova Anti R...

Страница 29: ...re not any parts on model T28959 that require lubrication by the end user The motor bearings were lubricated and perma nently sealed at the factory and do not need any further attention unless they need replacement Lubrication Cleaning Model T28959 is relatively easy Wipe off metal dust with dry cloth If any oil has built up use a degreaser to remove it Cleaning Protecting Grinding Wheel The edge ...

Страница 30: ...verheated 3 Motor bearings at fault 4 Motor at fault 1 Reduce feed rate replace grinding wheel make sure sharpener adjustments are correct for chain see Page 20 2 Clean motor let cool and reduce workload 3 Test repair replace 4 Test repair replace Machine has vibration or noisy operation 1 Motor or component loose 2 Grinding wheel at fault arbor hole not round 3 Machine incorrectly mounted to work...

Страница 31: ...nt at the time of printing but may not match your machine If you find this to be the case use the wiring diagram inside the motor junction box CAPACITORS INVERTERS Some capacitors and power inverters store an electrical charge for up to 10 minutes after being disconnected from the power source To reduce the risk of being shocked wait at least this long before working on capacitors EXPERIENCING DIF...

Страница 32: ...Plug IN OUT Light M2 M1 M3 M4 AW ON OFF Circuit Board JM3100G JIABEN 163622 JIABEN 163722 The motor wiring shown here is current at the time of printing but it may not match your machine Always use the wiring diagram inside the motor junction box Figure 36 Circuit board Figure 35 Wiring Wiring Diagram ...

Страница 33: ...6 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 22 1 41 42 43 46 46 54 101 46 39A Main SECTION 9 PARTS We do our best to stock replacement parts when possible but we cannot guarantee that all parts shown are available for purchase Call 800 523 4777 or visit www grizzly com parts to check for availability ...

Страница 34: ...TRAIN RELIEF 8ID X 13OD X 39L 46 PT28959046 HEX NUT M6 1 17 PT28959017 POWER CORD 18G 2W 72 1 15P 47 PT28959047 HEX BOLT M8 1 25 X 40 18 PT28959018 POWER CORD CLAMP 48 PT28959048 EXTENSION SPRING 0 75 X 10 X 32 19 PT28959019 TAP SCREW M4 7 X 12 49 PT28959049 SHOULDER SCREW M6 1 X 8 7 X 12 20 PT28959020 SPARK SHIELD 50 PT28959050 FLAT WASHER 6MM 21 PT28959021 ACORN NUT M4 7 51 PT28959051 CHAIN STOP...

Страница 35: ...rsons or property or for incidental contingent special or consequential damages arising from the use of our products To register the warranty go to https www grizzly com secureforms warranty card or scan the QR code below You will be directed to the Warranty Registration page on Grizzly com Enter all applicable information for the product To take advantage of this warranty contact us by mail or ph...

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