Grizzly G0939 Owner's Manual
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Grizzly G0939 Owner's Manual

13" 2 hp benchtop planer
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MODEL G0939/G0940
13" 2 HP BENCHTOP PLANER
OWNER'S MANUAL
(For models manufactured since 12/20)
COPYRIGHT © DECEMBER, 2020 BY GRIZZLY INDUSTRIAL, INC.
WARNING: NO PORTION OF THIS MANUAL MAY BE REPRODUCED IN ANY SHAPE
OR FORM WITHOUT THE WRITTEN APPROVAL OF GRIZZLY INDUSTRIAL, INC.
#MN21529 PRINTED IN CHINA
V1.02.21

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Summary of Contents for Grizzly G0939

  • Page 1 (For models manufactured since 12/20) COPYRIGHT © DECEMBER, 2020 BY GRIZZLY INDUSTRIAL, INC. WARNING: NO PORTION OF THIS MANUAL MAY BE REPRODUCED IN ANY SHAPE OR FORM WITHOUT THE WRITTEN APPROVAL OF GRIZZLY INDUSTRIAL, INC. #MN21529 PRINTED IN CHINA V1.02.21...
  • Page 2 This manual provides critical safety instructions on the proper setup, operation, maintenance, and service of this machine/tool. Save this document, refer to it often, and use it to instruct other operators. Failure to read, understand and follow the instructions in this manual may result in fire or serious personal injury—including amputation, electrocution, or death.

  • Page 3: Table Of Contents

    Controls & Components ......... 4 Replacing Motor Brushes ......34 Internal Components........5 Cleaning Infeed & Outfeed Rollers ....34 Machine Data Sheet (G0939) ......6 Cleaning Feed Rollers ......... 35 Machine Data Sheet (G0940) ......8 Tensioning/Replacing Drive Belt ....36 SECTION 1: SAFETY ........

  • Page 4: Introduction

    Machine Differences and it helps us determine if updated documenta- tion is available for your machine. Models G0939 and G0940 are 13" benchtop plan- ers with the following differences: Model G0939 has a 3-knife cutterhead with •...

  • Page 5: Identification

    Reset Button Dust Port ON/OFF Switch Adapter 4" Motor Brush Housing Table Cutterhead Depth Stop Dial Cutterhead Elevation Scale Depth-of-Cut Gauge To reduce your risk of serious injury, read this entire manual BEFORE using machine. Model G0939/G0940 (Mfd. Since 12/20)

  • Page 6: Controls & Components

    C. ON/OFF Switch Disabling Key: Disables switch when yellow key is removed to prevent unauthorized operation of planer. D. Depth-of-Cut Gauge: Shows depth of cut (from 0"– ⁄ ") when workpiece contacts indicator at bottom of gauge. Model G0939/G0940 (Mfd. Since 12/20)

  • Page 7: Internal Components

    Use this machine with respect and caution to decrease the risk of operator injury. If normal safety precautions are overlooked or ignored, serious personal injury may occur. Model G0939/G0940 (Mfd. Since 12/20)

  • Page 8: Machine Data Sheet (G0939)

    MACHINE DATA SHEET Customer Service #: (570) 546-9663 · To Order Call: (800) 523-4777 · Fax #: (800) 438-5901 MODEL G0939 13" 2 HP BENCHTOP PLANER Product Dimensions: Weight................................67 lbs. Width (side-to-side) x Depth (front-to-back) x Height..............25-1/2 x 25 x 19 in.
  • Page 9 The information contained herein is deemed accurate as of 1/31/2021 and represents our most recent product specifications. Model G0939 PAGE 2 OF 2 Due to our ongoing improvement efforts, this information may not accurately describe items previously purchased. Model G0939/G0940 (Mfd. Since 12/20)

  • Page 10: Machine Data Sheet (G0940)

    The information contained herein is deemed accurate as of 2/1/2021 and represents our most recent product specifications. Model G0940 PAGE 1 OF 2 Due to our ongoing improvement efforts, this information may not accurately describe items previously purchased. Model G0939/G0940 (Mfd. Since 12/20)
  • Page 11 The information contained herein is deemed accurate as of 1/31/2021 and represents our most recent product specifications. Model G0940 PAGE 2 OF 2 Due to our ongoing improvement efforts, this information may not accurately describe items previously purchased. Model G0939/G0940 (Mfd. Since 12/20)

  • Page 12: Section 1: Safety

    Never operate under the influence of drugs or injury or blindness from flying particles. Everyday alcohol, when tired, or when distracted. eyeglasses are NOT approved safety glasses. -10- Model G0939/G0940 (Mfd. Since 12/20)
  • Page 13 Make sure they are properly installed, you experience difficulties performing the intend- undamaged, and working correctly BEFORE ed operation, stop using the machine! Contact our operating machine. Technical Support at (570) 546-9663. -11- Model G0939/G0940 (Mfd. Since 12/20)

  • Page 14: Additional Safety For Planers

    GRAIN DIRECTION. Planing across grain is hard on planer and may cause kickback. Plane in same direction or at a slight angle with wood grain. -12- Model G0939/G0940 (Mfd. Since 12/20)

  • Page 15: Section 2: Power Supply

    -13- Model G0939/G0940 (Mfd. Since 12/20)
  • Page 16 Two-prong outlets do not meet the grounding requirements for this machine. Do not modify or use an adapter on the plug provided—if it will not fit the outlet, have a qualified electrician install the proper outlet with a verified ground. -14- Model G0939/G0940 (Mfd. Since 12/20)

  • Page 17: Section 3: Setup

    E. T-Handle Torx Wrenches T-20 (G0940) ..2 Flat Washer 5mm (Elevation Crank) ..1 G. T-Handle Hex Wrench 4mm (G0939) ..1 The following is a list of items shipped with your H. Dust Port Adapter 4" ........1 machine.

  • Page 18: Hardware Recognition Chart

    Hardware Recognition Chart USE THIS CHART TO MATCH UP HARDWARE DURING THE INVENTORY AND ASSEMBLY PROCESS. Flat Head Screw -16- Model G0939/G0940 (Mfd. Since 12/20)

  • Page 19: Site Considerations

    Children and visitors may be seriously injured if unsuper- vised around this machine. Lock entrances to the shop 28" or disable start switch or power connection to prevent unsupervised use. " Figure 7. Minimum working clearances. -17- Model G0939/G0940 (Mfd. Since 12/20)

  • Page 20: Bench Mounting

    Bench Mounting Assembly Number of Mounting Holes ......4 The Model G0939/G0940 comes partially assem- Dia. of Mounting Hardware Needed ... ⁄ " bled. The cutterhead elevation crank and dust chute must be installed before operating the The base of this machine has mounting holes planer.

  • Page 21: Dust Collection

    Figure 12. Dust hose installed onto dust port. Tug hose to make sure it does not come off. Note: A tight fit is necessary for proper performance. -19- Model G0939/G0940 (Mfd. Since 12/20)
  • Page 22 Call Tech Support for help. Remove switch disabling key, as shown in Figure 13. Figure 13. Removing key from paddle switch to disable switch and prevent unauthorized use. -20- Model G0939/G0940 (Mfd. Since 12/20)

  • Page 23: Section 4: Operations

    Read books/magazines or get formal training before beginning any proj- ects. Regardless of the content in this sec- tion, Grizzly Industrial will not be held liable for accidents caused by lack of training. -21- Model G0939/G0940 (Mfd. Since 12/20)

  • Page 24: Workpiece Inspection

    Workpieces with slight cupping can be safely common wood species. supported if the cupped side is facing the table. Avoid planing a workpiece bowed side-down, which can cause rocking during planing and potential kickback. -22- Model G0939/G0940 (Mfd. Since 12/20)

  • Page 25: Planing Tips

    • Always true cupped or warped stock on a jointer before planing. -23- Model G0939/G0940 (Mfd. Since 12/20)

  • Page 26: Setting Depth Of Cut

    Problem: Regularly spaced indentations across 1 Turn face of workpiece are caused by excessive ⁄ " outfeed roller pressure or excessive feed rate. Figure 15. Crank elevation increments. Solution: Reduce outfeed roller pressure; reduce feed rate. -24- Model G0939/G0940 (Mfd. Since 12/20)

  • Page 27: Feeding Workpiece

    ⁄ ". However, as long as you move the handle in the same direction during operation, backlash will not Scale be a factor. Depth Stop Dial Figure 17. Depth stop dial and scale. -25- Model G0939/G0940 (Mfd. Since 12/20)

  • Page 28: Adjusting Table Alignment

    Recheck table height from side to side, then tighten stop nut to secure the Tools Needed setting. Open-End Wrench 10mm ........2 Precision Straightedge 24" ........ 1 Phillips Head Screwdriver #2 ......1 -26- Model G0939/G0940 (Mfd. Since 12/20)

  • Page 29: Adjusting/Replacing Knives (G0939)

    Neglecting to inspect these components may result in damage to the planer. The condition of the knives on the Model G0939 will affect the precision of the cut. During opera- tion, watch for the following signs of dulled knives: Dust Chute •...
  • Page 30 ¼-turn. Release safety latch and continue rotating cutterhead until next knife slot is exposed and safety latch again engages. Cutterhead Safety Latch Figure 23. Disengaging cutterhead lock. Repeat Steps 3–4 to remove remaining knives. -28- Model G0939/G0940 (Mfd. Since 12/20)
  • Page 31 ¼-turn. Release safety latch and continue rotating cutterhead until next knife slot is exposed and safety latch again engages. Repeat Steps 2–3 for remaining knives, then replace dust shroud and dust chute. -29- Model G0939/G0940 (Mfd. Since 12/20)

  • Page 32: Rotating/Replacing Cutterhead Inserts (G0940)

    When finished, re-install dust shroud and Dust Chute dust hood. Figure 27. Components to be removed to access helical cutterhead. -30- Model G0939/G0940 (Mfd. Since 12/20)

  • Page 33: Section 5: Accessories

    These steel knives measure 13" x 12mm x ⁄ ". T20502 T20503 T20452 T20456 T20451 Figure 31. Assortment of basic eye protection. Figure 29. HSS Planer Knives for Model G0939. www.grizzly.com 1-800-523-4777 order online at or call -31- Model G0939/G0940 (Mfd. Since 12/20)

  • Page 34: Section 6: Maintenance

    Protecting To reduce risk of shock or accidental startup, always disconnect machine from Cleaning the Model G0939/G0940 is relatively power before adjustments, easy. Vacuum excess wood chips and sawdust, maintenance, or service. and wipe off the remaining dust with a dry cloth.
  • Page 35 Allow mineral spirits to dry, then apply light coat of oil to surfaces. Sprockets Tilt machine back onto base. Move cutterhead up and down to evenly Figure 33. Cutterhead elevation leadscrews and distribute oil. feed roller drive chain exposed for lubricating. -33- Model G0939/G0940 (Mfd. Since 12/20)

  • Page 36: Replacing Motor Brushes

    Replacing Motor Cleaning Infeed & Brushes Outfeed Rollers The motor on the G0939/G0940 is equipped with Saw dust and workpiece grime can accumulate two long-life carbon brushes—one on the front on the infeed and outfeed rollers, creating incon- and one on the back of the motor. The brush life is sistent pressure on the workpiece as it is fed affected by motor loads and usage.

  • Page 37: Cleaning Feed Rollers

    Remove any trapped material from between roller assembly and bracket. Bracket Bushing Block Figure 37. Sawdust can get trapped between the bushing block and the bracket. -35- Model G0939/G0940 (Mfd. Since 12/20)

  • Page 38: Tensioning/Replacing Drive Belt

    — If belt ribs are not properly seated, roll belt Cap Screw off pulleys and repeat Steps 6–8 until they are. Cutterhead 10. Replace side panel, secure top cover, and Belt Pulley re-install cutterhead depth stop dial. Figure 38. Drive belt and pulleys. -36- Model G0939/G0940 (Mfd. Since 12/20)

  • Page 39: Section 7: Service

    (Page 27). 5. Pulley loose. 5. Secure pulley on shaft. 6. Cutterhead bearings at fault. 6. Replace bearing(s). 7. Motor bearings at fault. 7. Test by rotating shaft; rotational grinding/loose shaft requires bearing replacement. -37- Model G0939/G0940 (Mfd. Since 12/20)
  • Page 40 2. Increase depth of cut (Page 24). 2. Cutting depth too shallow. Infeed/outfeed 1. Chain and sprockets are worn, 1. Adjust chain and sprockets; replace if necessary. rollers not rotating. misadjusted, disconnected, or broken. -38- Model G0939/G0940 (Mfd. Since 12/20)

  • Page 41: Calibrating Headstock Elevation Scale

    Wood Blocks 12" Scale Indicator Line Phillips Head Screws Cutterhead Figure 41. Checking cutterhead parallelism. Figure 40. Elevation scale components used to calibrate thickness reading. -39- Model G0939/G0940 (Mfd. Since 12/20)
  • Page 42 Steps 5–7 until cutterhead is parallel. Plane a test piece to confirm even cut depth across width of workpiece. Set Screws Adjustment Nuts Leadscrew Figure 42. Location of headstock adjustment components. (Top and side covers removed for clarity.) -40- Model G0939/G0940 (Mfd. Since 12/20)

  • Page 43: Calibrating Depth Stop Dial

    Compare depth stop dial scale to cutterhead elevation scale. Elevation Scale Repeat Steps 2–6 as needed until both scales match. Depth Stop Dial Figure 43. Removing dial from machine body. Remove top assembly and side panels. -41- Model G0939/G0940 (Mfd. Since 12/20)

  • Page 44: Replacing Table Height Pinion Gears

    To replace table height pinion gears: DISCONNECT MACHINE FROM POWER! Gently tilt machine onto its back to expose table height gears and shaft (see Figure 45). Gears Shaft Clamps Figure 45. Table height pinion gears. -42- Model G0939/G0940 (Mfd. Since 12/20)

  • Page 45: Section 8: Wiring

    Technical Support at (570) 546-9663. The photos and diagrams included in this section are best viewed in color. You can view these pages in color at www.grizzly.com. -43- Model G0939/G0940 (Mfd. Since 12/20)

  • Page 46: Wiring Diagram

    Neutral 120 VAC 5-15 Plug Ground PADDLE SWITCH BOX 120V Motor PADDLE SWITCH COVER Circuit Breaker Zhongzui 15A 125/250V Paddle Switch KEDU HY18 12A 125/250V Ground Ground Figure 46. Switch and circuit breaker wiring. -44- Model G0939/G0940 (Mfd. Since 12/20)

  • Page 47: Section 9: Parts

    SECTION 9: PARTS G0939 Breakdown 46 47 93 94 97 99 BUY PARTS ONLINE AT GRIZZLY.COM! -45- Model G0939/G0940 (Mfd. Since 12/20) Scan QR code to visit our Parts Store.
  • Page 48 CAP SCREW M5-.8 X 12 P0939098 LOCK WASHER 5MM P0939049 CUTTERHEAD PULLEY P0939099 CAP SCREW M5-.8 X 8 P0939050 MOTOR PULLEY 100 P0939100 LEADSCREW (RIGHT) BUY PARTS ONLINE AT GRIZZLY.COM! -46- Model G0939/G0940 (Mfd. Since 12/20) Scan QR code to visit our Parts Store.
  • Page 49 Please Note: We do our best to stock replacement parts whenever possible, but we cannot guarantee that all parts shown here are available for purchase. Call (800) 523-4777 or visit our online parts store at www.grizzly.com to check for availability.

  • Page 50: G0940 Breakdown

    G0940 Breakdown BUY PARTS ONLINE AT GRIZZLY.COM! -48- Model G0939/G0940 (Mfd. Since 12/20) Scan QR code to visit our Parts Store.
  • Page 51 P0940098 CAP SCREW M5-.8 X 16 P0940049 CAP SCREW M5-.8 X 12 P0940099 MOUNTING ARM P0940050 INFEED ROLLER P0940100 SUPPORT BLOCK BUY PARTS ONLINE AT GRIZZLY.COM! -49- Model G0939/G0940 (Mfd. Since 12/20) Scan QR code to visit our Parts Store.
  • Page 52 CAP SCREW M5-.8 X 16 P0940137 POWER CORD 14G 3W 72" 5-15P P0940119 CAP SCREW M5-.8 X 12 P0940138 T-HANDLE TORX WRENCH T-20 BUY PARTS ONLINE AT GRIZZLY.COM! -50- Model G0939/G0940 (Mfd. Since 12/20) Scan QR code to visit our Parts Store.

  • Page 53: Labels & Cosmetics

    Safety labels help reduce the risk of serious injury caused by machine hazards. If any label comes off or becomes unreadable, the owner of this machine MUST replace it in the original location before resuming operations. For replacements, contact (800) 523-4777 or www.grizzly.com. BUY PARTS ONLINE AT GRIZZLY.COM! -51- Model G0939/G0940 (Mfd.

  • Page 55: Warranty & Returns

    WARRANTY & RETURNS Grizzly Industrial, Inc. warrants every product it sells for a period of 1 year to the original purchaser from the date of purchase. This warranty does not apply to defects due directly or indirectly to misuse, abuse, negligence, accidents, repairs or alterations or lack of maintenance.

This manual is also suitable for:

G0940

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