Graco GrindLazer 25M842 Operation - Repair - Parts Download

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3A5578C

Operation, Repair, Parts

GrindLazer

™

For removal of materials from flat horizontal concrete and asphalt surfaces. For
professional use only.

Standard Series - Forward Cut

Model 25M842 - GrindLazer Standard DC87 G (200 cc / 6.5hp)
Model 25M843 - GrindLazer Standard DC89 G (270 cc / 9hp)

Pro Series - Forward Cut

Model 25M846 - GrindLazer Pro DC1013 G (390 cc / 13hp)
Model 25N667 - GrindLazer Pro DC89 G (270 cc / 9hp)
Model 25N668 - GrindLazer Pro DC1013 DCS (390 cc / 13hp Electric Start)

GrindLazer Standard Series

GrindLazer Pro Series

Summary of Contents for GrindLazer 25M842

Page 1: ...nly Standard Series Forward Cut Model 25M842 GrindLazer Standard DC87 G 200 cc 6 5hp Model 25M843 GrindLazer Standard DC89 G 270 cc 9hp Pro Series Forward Cut Model 25M846 GrindLazer Pro DC1013 G 390...

Page 2: ...ve Assembly Parts List 25M842 39 Drive Assembly 25M843 40 Drive Assembly Parts List 25M843 41 Guide Bar Assembly 25M842 and 25M843 42 Guide Bar Assembly 25M842 and 25M843 Parts List 43 Primary Housing...

Page 3: ...r long hair while operating equipment Before checking moving or servicing equipment disable power supply BURN HAZARD Cutters and engine can become very hot during operation To avoid severe burns do no...

Page 4: ...ll fuel tank while engine is running or hot shut off engine and let it cool Fuel is flammable and can ignite or explode if spilled on hot surface Keep work area free of debris including solvent rags a...

Page 5: ...A Handlebar B Depth Engage Lever coarse adjustment C Locking Nut for handle height adjustment D Drum Adjustment Dial fine adjustments E Fixed Front Wheel optional F Drum Access Panel G Feathering Fron...

Page 6: ...indLazer Pro Series Models Component A Handlebar B Drum Engage Lever C Handlebar Adjustment Bolts D Drum Adjustment Dial E Drum Access Panel F Dust Skirt G Vacuum Port H Engine I Engine Power Switch J...

Page 7: ...justment Bolts D DCS Control E Pressure Control Dial F Dust Skirt G Vacuum Port H Engine I Electric Start Engine Switch J Engine Throttle K Engine Kill Button L Pressure Indicator M Wheel Stop N Hour...

Page 8: ...cident such as the machine operator falling or losing footing the GrindLazer is equipped with a corded Engine Kill Button Attach the end of the cord to the operator s belt or wrist and snap the clip i...

Page 9: ...haft 8 Replace Drum Access Panel lift up and lock into place over hex shaft and secure hardware NOTE An extra drum loaded with cutters for rapid job site replacement is recommended Drum Installation R...

Page 10: ...g order b Remove dirt and material build up from inside drive carriage and drum c Lube all metal contacts 7 Align and slide drum back onto the hex shaft 8 Replace Drum Access Panel lift up and lock in...

Page 11: ...hile long press is pressing the button and holding the button for two or more seconds NOTE plus refers to above pavement surface minus refers to below pavement surface Run Screen Home Button Quick Pre...

Page 12: ...Button To exit with saving long press the Cut Depth Button If below zero point Reprograms the Cut Depth Target to the current drum position Up Arrow Button Quick Press Raises the drum by 0 01 0 25mm 1...

Page 13: ...reen 1 Language Select your desired language English Spanish French German or International Symbols Menu Screen 2 Units Select your desired depth units inches millimeters or mils Menu Screen 3 Model S...

Page 14: ...5 High Motor Current E08 Low Voltage E09 Hall Sensor Error E12 High Current short circuit E31 Home Button Error E32 Zero Button Error E33 Cut Depth Button Error E34 Up Button Error E35 Down Button Err...

Page 15: ...d After the engine starts move choke to open Set throttle to desired setting If the Engine Does Not Start Check engine for proper gas level Check the spark plug Make sure socket areas are clean and cl...

Page 16: ...Cord to operator 4 Slide Engine Throttle to desired setting 5 Standard Models Disengage Drum Engage Lever and adjust to position where drum is almost touching the ground Pro Models Lower the Drum Enga...

Page 17: ...should not labor Run engine at full speed and adjust forward speed to fit the work being performed Harder concrete surfaces will have to be cut at a slower pace than asphalt or other softer surfaces C...

Page 18: ...he drum is off the ground 2 Slide Engine Throttle to low setting 3 Depress Engine Kill Button and turn Engine Power Switch to OFF 4 Clean the entire exterior of the machine after it has cooled Check f...

Page 19: ...Your Zero Point has now been saved NOTE The Cut Depth Target is based off of the Zero Point Re program the Zero Point if the drum is changed or worn Set Cut Depth Target Quick press the Zero Button to...

Page 20: ...m moving any further up or down until another button is pressed Manual Height Adjustment If the DCS Control is not usable dead battery etc the drum height can be adjusted using the Manual Height Adjus...

Page 21: ...level and fill as necessary Check and fill gas tank Remove air filter cover and clean element Replace element if necessary Replacement elements can be purchased from your local engine dealer Pro Model...

Page 22: ...UT START DEPTH ALTURA HAUTEUR TIEFE TARGET OBJETIVO OBJECTIF ZIEL ZERO CERO Z RO NULL SEL MODEL MODELO MODELE MODELL LANGUAGE IDIOMA LA LANGUE SPRACHE UNITS UNIDAD DE MEDIDA UNIT DE MESURE MA EINHEIT...

Page 23: ...JE HAUTE TENSION HOCHSPANNUNG HALL SENSORS SENSORES DE HALL CAPTEURS DE HALL HALL SENSOREN HOME BUTTON BOT N DE INICIO BOUTON DE D BUT START KNOPF ZERO BUTTON BOT N CERO BOUTON Z RO NULLTASTE CUT BUTT...

Page 24: ...bench for assembly a Inspect condition of cutters spacers shafts bushings and drum 6 Before replacing the drum onto hex shaft a Check that all bearings are in good working order b Remove dirt and mate...

Page 25: ...ck into place over hex shaft and secure hardware NOTE An extra drum loaded with cutters for rapid job site replacement is recommended Belt Replacement Standard Models Normal wear may necessitate belt...

Page 26: ...lleys 7 Using the straight edge lay it across the lower pulley outer face and against the upper pulley They must be directly over top of each other to ensure long belt life If adjustment is required a...

Page 27: ...ing jackscrew with spray lubricant on the front of the machine 5 Use a 9 16 wrench to loosen the jackscrew retaining nut 6 Using the 3 8 open end wrench begin to screw the motor plate jackscrew back i...

Page 28: ...ed tension Do not over tension the belt 13 After the correct tension is reached tighten the front motor plate securing screw on the belt side with the 9 16 box end wrench 14 From the front of the mach...

Page 29: ...e sure to place the pulley on the same plane as the original one to ensure alignment Bearing Replacement Standard Models Tools required 1 16mm socket or wrench 2 1 2 socket or wrench 3 9 16 socket or...

Page 30: ...7 Slide cutter drum onto shaft 8 Install new door bearing onto the Drum Access Panel with the 4 bolts Assemble the Drum Access Panel onto the unit 9 Replace belt and belt guard see page 25 Bearing Re...

Page 31: ...crews locking it in place using the 3 16 hex key 5 Remove the bearing assemblies on both sides on the machine using the 9 16 socket 6 Install new bearing assemblies onto both sides of machine Tighten...

Page 32: ...hing required is part of the high speed kit 3 Place the new pulley and other bushing included in the kit onto the drive shaft 4 Before tightening the pulleys in place with the bushings put the new bel...

Page 33: ...not replaced within 40 hours Replace shafts and bushings Excessive vibration Bearing worn Replace worn bearing Hex bushing worn Replace hex bushing Drive shaft worn Replace drive shaft Improper cutter...

Page 34: ...ol Check all connections A DCS Control Switch is pressed or defective Ensure all switches are not stuck Replace switches if defective Actuator rod is stuck Manually move the actuator rod using the Man...

Page 35: ...Engine is not charging the battery Charge the engine charging coil and voltage recti fier regulator Replace or repair if needed E09 Hall Sensor Error Actuator Signal Cable is disconnected from DCS Con...

Page 36: ...r Rocker Switch Check to see if the switch is stuck If not stuck replace the Han dlebar Rocker Switch E35 Down Button Error The Down Button or Handlebar Switch is stuck or shorted Disconnect Handlebar...

Page 37: ...and brown wires on the actuator to a good 12VDC battery First try with the blue wire on positive post and brown wire on negative post If the actuator rod does not move put the blue wire on the negativ...

Page 38: ...Parts 38 3A5578C Parts Drive Assembly 25M842 Use industry standard torques when not specified Ref Torque 50 60 in lb 5 6 6 8 N m 40 40 in lb 4 5 5 0 N m 200 225 in lb 22 5 25 5 N m 1 2 3 2 1 3...

Page 39: ...995 Woodruff Key 1 9 17W996 Lower Pulley 1 10 17W997 Drive Belt 3 11 17W061 5 16 1 25 OD Fender Washer 1 12 17W128 5 16 Lock Washer 1 13 17W124 5 16 24x1 Hex Cap Screw 1 14 17W998 Tabbed Washer 1 15 1...

Page 40: ...Parts 40 3A5578C Drive Assembly 25M843 Use industry standard torques when not specified Ref Torque 50 60 in lb 5 6 6 8 N m 40 40 in lb 4 5 5 0 N m 200 225 in lb 22 5 25 5 N m 1 2 3 2 1 3...

Page 41: ...1 9 17W995 Woodruff Key 1 10 17W996 Lower Pulley 1 11 17W304 Drive Belt 3 12 17W146 7 16 1 25 OD Fender Washer 1 13 17W159 7 16 Lock Washer 1 14 17W145 7 16 20x1 Hex Cap Screw 1 15 17W998 Tabbed Wash...

Page 42: ...Parts 42 3A5578C Guide Bar Assembly 25M842 and 25M843 Use industry standard torques when not specified Ref Torque 100 110 in lb 11 3 12 4 N m 1 1...

Page 43: ...ck Washer 3 17 17W425 M10 Flat Washer 11 18 17W424 M10 1 5 Nylon Nut 6 19 17X020 Lower Clevis Spring Pin 2 20 17X021 Brass Bushing 2 21 17X022 Height Adjustment Hand Knob 1 22 17X023 M10 1 5x10mm Set...

Page 44: ...Parts 44 3A5578C Primary Housing Assembly 25M842 and 25M843 Use industry standard torques when not specified Ref Torque 28 30 ft lb 38 40 N m 1 1 1 1...

Page 45: ...sher 2 11 17X041 M8 1 25x25mm Hex Cap Screw 2 12 17X002 Belt Guard model 25M842 1 17W305 Belt Guard model 25M843 1 13 17X005 M10 1 5x16mm Hex Cap Screw 2 14 17X042 Main Housing 1 15 17X044 Side Plate...

Page 46: ...ve Pulley 1 7 17X063 Hex Bushing 1 8 17X064 Hex Bushing C Clip 1 9 17X065 Shaft Spacer 1 10 17X066 Pulley Spacer 1 11 17W998 Tabbed Washer 1 12 17W999 Slotted Left Handed Lock Nut 1 13 17X067 M8 1 25x...

Page 47: ...3 17W038 Shaft key 1 4 17W046 Drive side bearing assembly 1 4 17W953 Drive side bearing assembly 1 5 17W040 Side plate bearing assembly 1 5 17W954 Side plate bearing assembly 1 6 17W007 3 8 Lock Wash...

Page 48: ...78C Rear Assembly 25M846 25N667 Use industry standard torques when not specified Ref Torque 24 26 ft lb 32 5 35 3 N m 180 200 in lb 20 3 22 6 N m 70 75 in lb 7 9 8 5 N m 160 170 in lb 18 1 19 2 N m 1...

Page 49: ...72 Lower Linkage 1 15 17W045 Grease Fitting 2 16 17W056 Locking Collar 1 17 17Y822 Upper Linkage 1 18 17W117 5 8 11x2 5 Hex Cap Screw 1 19 17W114 Belleville Washer 2 20 17W113 Bronze Washer 2 21 17W10...

Page 50: ...Rear Assembly 25N668 Use industry standard torques when not specified Ref Torque 28 30 ft lb 38 0 40 7 N m 12 15 ft lb 16 3 20 3 N m 7 8 ft lb 9 5 10 8 N m 72 84 in lb 8 1 9 5 N m 144 180 in lb 16 2 2...

Page 51: ...me 1 14 17Z140 Lower Linkage 1 15 10115 Battery Cover 1 16 115753 Selead Battery 33Ah 1 17 17Z142 Battery Bracket 1 18 25N506 DCS Assembly Control 1 19 17Y237 Actuator Linear 12V 3 stroke 1 20 17Z139...

Page 52: ...05 in lb 10 7 11 9 N m 1 2 2 1 Item P N Description Qty 1 17W126 Shock Absorber 1 2 17W123 Lower Attachment Link 1 3 17W122 Upper Attachment Link 1 4 17W124 5 16 18x1 75 Hex Cap Screw 1 5 17W087 5 16...

Page 53: ...Parts 3A5578C 53 NOTES...

Page 54: ...ront Assembly 25M846 25N667 25N668 Use industry standard torques when not specified Ref Torque 120 140 in lb 13 6 15 8 N m 55 65 in lb 6 2 7 3 N m 22 24 ft lb 29 8 32 5 N m 19 21 ft lb 25 8 28 5 N m 1...

Page 55: ...asher 4 15 17W008 3 8 Flat Washer 8 16 17W025 1 4 20x1 Low Profile Screw 1 19 17Y119 Engine Mount Model 25N667 1 17Z141 Engine Mount Model 25M846 25N668 1 20 17W093 3 8 16x3 Carriage Bolt 1 21 17W094...

Page 56: ...ed Ref Torque 22 24 ft lb 29 8 32 5 N m 1 1 Item P N Description Qty 1 17W281 Long Handle Bar Grip 49 Long 1 2 17W005 Handle Bar Tubing 1 3 17W002 Short Handle Bar Grip 4 Long 2 4 17W003 Handle Bar Cl...

Page 57: ...bing 2 2 18A400 Foam Grip Left 1 3 18A401 Foam Grip Right 1 4 17W003 Handle Bar Clamp 4 5 17W006 3 8 16x1 5 Hex Cap Screw 4 6 17W007 3 8 Lock Washer 4 7 17W087 5 16 Flat Washer 4 8 17W009 3 4 Plastic...

Page 58: ...Parts 58 3A5578C Drive Assembly 25M846 25N667 Use industry standard torques when not specified Ref Torque 160 170 in lb 18 1 19 2 N m 1 1 1 1...

Page 59: ...Washer 1 11 17W109 3 8 Fender Washer 1 12 17W074 5 16 24x0 75 Hex Cap Screw 1 13 17W128 5 16 Lock Washer 1 14 17W061 5 16 Fender Washer 1 15 17W038 Key for Drive Pulley 1 16 17W284 Tachometer Hour Me...

Page 60: ...Parts 60 3A5578C Drive Assembly 25N668 Use industry standard torques when not specified Ref Torque 12 15 ft lb 16 3 20 3 N m 2 3 ft lb 2 7 4 1 N m 1 2...

Page 61: ...sher 1 11 17W109 3 8 Fender Washer 1 12 17W074 5 16 24x0 75 Hex Cap Screw 1 13 17W128 5 16 Lock Washer 1 14 17W061 5 16 Fender Washer 1 15 17W038 Key for Drive Pulley 1 16 17W284 Tachometer Hour Meter...

Page 62: ...hined includes 300a 300f 1 301 17Y686 LABEL control GrindLazer DCS 1 302 18A691 KIT potted DCS Control PCB 1 303 18A692 KIT display board DCS control 1 304 18A693 KIT home button DCS 1 305 18A694 KIT...

Page 63: ...Wiring Diagram 3A5578C 63 Wiring Diagram DCS System 17Y999 17Y237...

Page 64: ...Wiring Diagram 64 3A5578C DCS Control Box Powers Display...

Page 65: ...ISO 3744 Sound pressure 92 dBa measured at 3 1 feet 1m Vibration level Right Left Hand 9 5 m sec2 Vibration measured per ISO 5349 based on 8 hr daily exposure Dimensions Weight unpackaged US Metric He...

Page 66: ...GrindLazer Pro DC1013 DCS 25N668 Noise level dBa Sound power 109 dBa per ISO 3744 Sound pressure 94 dBa measured at 3 1 feet 1m Vibration level Right Left Hand 13 5 m sec2 Vibration measured per ISO...

Page 67: ...s of parts labor and transportation THIS WARRANTY IS EXCLUSIVE AND IS IN LIEU OF ANY OTHER WARRANTIES EXPRESS OR IMPLIED INCLUDING BUT NOT LIMITED TO WARRANTY OF MERCHANTABILITY OR WARRANTY OF FITNESS...

Page 68: ...olis International Offices Belgium China Japan Korea GRACO INC AND SUBSIDIARIES P O BOX 1441 MINNEAPOLIS MN 55440 1441 USA Copyright 2018 Graco Inc All Graco manufacturing locations are registered to...

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