POWER TROWEL POWER TROWEL
Contents
1. This page intentionally left blank 9 Ni Toll Free 866 501 1683 Phone 905 458 5455 Fax 905 458 5484 Page 4 of 38 PRODUCT SAFETY READ OPERATING INSTRUCTIONS Read and understand this entire manual before attempting to operate or service the equipment described herein Failure to follow these operating instructions could result in serious injury or death Store this manual with the machine and ensure it is apparent and available to any users CALIFORNIA PROPOSITION 65 WARNING ps Engine exhaust some of its constituents and certain vehicle components contain or emit chemicals known to the State of California to cause cancer and birth defects or other reproductive harm PRODUCT SAFETY AND HAZARD ALERT SYSTEM This Operating Manual presents Product Safety and Hazard Alert Information in accordance with American National Standards Institute and nternational Organization for Standardization recommendations as laid out in ANSI Z535 and ISO 3864 The callouts of DANGER WARNING CAUTION and NOTE must be followed to reduce or avoid the potential for personal injury equipment damage or service related equipment failures DANGER Beware of a hazardous situation that WILL result in serious personal injury or Safety Hazard Alert Alerts the reader to personal injury hazards and other important potentially life saving death information DANGER WARNING CAUTION Beware of a hazardous Beware of a haz2. e Safety Ring Serves the dual purpose of protecting the rotating spider assembly from impacts with obstacles and keeps the operator s hands and feet out of the path of the blades The safety ring is removable for easier blade maintenance and is mounted with rubber shock absorbers to reduce vibration and noise The safety ring should always be installed before starting the engine e Spider The spider assembly consists of the spider hub and trowel arms the trowel blades the blade pitch arms and the stabilizer ring The entire assembly is attached to the main gearbox shaft via a single bolt and square key The trowel blades are double edged for extra life and designed for easy replacement A bent trowel arm will severely affect the performance of your Power Trowel so these can easily be replaced e Handle When unfolded and locked the handle provides the operator with easy and ergonomic control over the Power Trowel When folded over and locked in place the handle becomes a hoist lift point and a protective cage for the engine during transportation Please refer to the 7rowe Technique section for details on how to properly use the NXT 90 e Throttle Lever The throttle lever provides the operator with quick and reliable control of the engine speed The lever will move in different directions for different engine configurations On the Honda GC160 model of NXT 90 setting the throttle lever to minimum will shut down the engine while the
3. NPRECAUCION Maximum sound level 105dB ARRET PARADA Y WARNING Shut down engine and allow sufficient cooling time before refueling this equipment A WARNING A AVERTISSEMENT A ADVERTENCIA CAUTION Read and understand entire operator s manual before using or servicing T CAUTION this equipment A PRECAUTION A PRECAUCION O Vii Toll Free 866 501 1683 Phone 905 458 5455 Fax 905 458 5484 Page 16 of 38 2 2 DOUBLE DEADMAN SAFETY HANDLE The Nexus NXT 90 comes equipped with an operator presence system that allows the user to run the Power Trowel with the freedom to take either hand off of the handle without shutting down the engine If both hands are removed for any reason such as a fall stumble or other emergency the engine will shut down to prevent runaway equipment i j LI q A 3 PRC NS KOS i SON Li x ax Ws iL C TS Zi SEZ og gt ENGINE RUN ENGINE RUN ENGINE STOP FIGURE 6 DEADMAN HANDLE OPERATION It should be noted that the NXT 90 will immediately begin to rotate in the opposite direction to the blades when both of the handles are released Even with the engine shut down the drivetrain will have sufficient momentum to spin the handle up to 180 1 2 turn before coming to a stop For this reason do not attempt to grab the handle after releasing it Stand clear and let the equipment come to rest bef
4. Pulling gently on the handle while holding it with both hands will cause it to float toward you The handle will try to rotate away from you while the engine is running so hold it firmly to keep it steady CAUTION If the entire trowel is pulling to the right or left balance it by lifting up or pressing down on the handle Do not try to stop the sideways motion of the trowel with direct sideways force balance it by lifting or pressing down on the handle Practice holding the trowel steady in one place for a few minutes at a time To move sideways it is always best to let the trowel do the work The rotating blades create a sideways force when the trowel is leaned forward or backward Lift up on the handle to make the machine go left or press downward on the handle to make the trowel go to the right The best way to remember this is Lift to go Left Never press or lift with enough force to make the blades edges dig into the concrete PUSH DOWN ON HANDLE LIFT UP ON HANDLE T O Vii Toll Free 866 501 1683 Phone 905 458 5455 Fax 905 458 5484 Page 22 of 38 4 1 TROWELLING Trowelling the concrete surface eliminates large aggretates near the surface levels bumps and depressions and consolidates the surface to make it stronger The surface must first be sufficiently cured to support the weight of the trowel The surface should first be leveled using a float or vibratory screed To use the standa
5. Signature de la personne autoris e Telephone 1 514 463 4838 Handtekening van gemachtigd persoon Facsimile 1 514 697 4239 Firma de la persona autorizada Assinatura de pessoa autorizada Firma della persona autorizzata Typed name of Authorized Person Nom dactlyographi de la personne autoris e Getypte naam van gemachtigd persoon Robert S Leggitt Nombre de la persona autorizada Nome datilografado da pessoa autorizada Nome della persona autorizzata Title of Authorized Person Titre de la personne autoris e Functie van gemachtigd persoon Cargo de la persona autorizada Titulo da pessoa autorizada Posizione della persona autorizzata Date and place of issue 09 01 2009 Date et place d mission Datum en plaats van afgifte Fecha y lugar de emision Data e lugar de emissao o Data e luogo di emissione Toll Free 866 501 1683 Phone 905 458 5455 Fax 905 458 5484 n Page 37 of 38 Manager Engineering Mississauga Ontario Canada NOTES O Vii Toll Free 866 501 1683 Phone 905 458 5455 Fax 905 458 5484 Page 38 of 38
6. 134 4a REMOVER NEVER spray water on the engine s air filter or into the muffler Doing so can damage the engine and void the engine s warranty CAUTION e Maintain the engine of your NXT 90 as described in the included engine owner s manual Missing manuals can be replaced by contacting your equipment s manufacturer or searching online e he NXT 90 gearbox is entirely self contained and sealed It should not be opened or serviced by anyone except authorized repair shops The gearbox lubricant is in a gel state when the Power Trowel is not in use It only liquefies when the equipment is active Inspection of the sealed components is only necessary if the gearbox becomes oily at the shaft seals Clean the gearbox and look for signs of a leak after prolonged use e he spider plate assembly uses a sealed oil bath for lubrication Any sign of an oil leak should be followed up with an inspection of the trowel arms and oil seals A jammed trowel arm is most likely the result of a blade strike resulting in bending of the arm A bent trowel arm must be replaced to regain smooth operation of your Power Trowel e The drivetrain should be frequently cleaned and inspected for concrete build up The drive belt should be inspected for tension and wear This wear is accelerated by leaving the NXT 90 idling for extended periods The clutch should be inspected if the Power Trowel experiences a sudden drop in performance or loud belt squeal e he deadman
7. bolt see Figure 21 CARRIAGE BOLT FIGURE 21 TROWEL ARM LIFT ASSEMBLY 4 Assemble the first trowel arm into the adjustment fixture as shown in Figure 22 Tighten the retaining bolts as much as possible Ensure that the upper clamp is turned to the 46 side over the carriage bolt FIXTURE FIGURE 22 TROWEL ARM ADJUSTMENT FIXTURE Toll Free 866 501 1683 Phone 905 458 5455 Fax 905 458 5484 Page 33 of 38 5 Adjust the carriage bolt using a wrench until it is firmly pressed against the bottom of the 46 clamp 6 Re tighten the locking nut while ensuring that the carriage bolt does not turn with it If the carriage bolt does move restart at step 5 7 Remove the first trowel arm and repeat for the other three 8 Re install the calibrated trowel arms into the spider hub ensuring that the oil seal is not damaged or dislodged 9 Re fill each of the four 4 trowel arm oil baths through the set screw hole on the spider hub Replace the set screw after filling each one see Figure 23 q 209 E RETAINING SET SCREW t Pli OIL BATH FILL 4 PLACES FIGURE 23 SPIDER OIL BATH FILL HOLES 10 Re assemble the NXT 90 and test handling on a smooth surface O 3Ni Toll Free 866 501 1683 Phone 905 458 5455 Fax 905 458 5484 Page 34 of 38 This page intentionally left blank Toll Free 866 501 1683 Phone 905 458 5455 Fax 905 458 5484 Page 35 of 38 3M Decla
8. general principles for design Part 1 Basic Terminology methodology oafety of Machinery Basic Concepts general principles for design Part 2 Technical Principles Acoustics Measurement of Airborne noise emitted by construction EN ISO 4872 1978 equipment intended for outdoor use Method for determining compliance with noise limits EN 349 1993 EN 418 1993 EN 12100 1 2003 EN 12100 2 2003 EN ISO 5349 Mechanical vibration Measurement and evaluation of human 1 2001 exposure to hand transmitted vibration General requirements Mechanical vibration Measurement and assessment of human EN ISO 5349 2 2001 exposure to hand transmitted vibration Practical guidance for measurement at the workplace Following the provisions of Directive s Suivant les directive s d termin es Volgens de vastgestelde richtlijnen oiguiendo las directiva s No sequimento das clausulas da Directiva s Seguendo quanto indicato dalla Direttiva s 98 37 EC Machinery Directive 2000 14 EC Noise Directive 2001 95 EC General Product Safety Directive 2002 95 EC Reduction of Hazardous Waste Directive 9 Vii Toll Free 866 501 1683 Phone 905 458 5455 Fax 905 458 5484 Page 36 of 38 Technical Characteristics Caract ristiques techniques Technisch gegevens Caracter sticas T cnicas Caracteristicas T cnicas Qualit s di tecnico Model MachineSerial Number Engine Serial Number Weight Mod le Num ro de S rie mach
9. guidelines can lead to serious personal injury and even death The operator and any service personnel should read and understand the entire manual before working with or servicing the NXT 90 WARNING e The NXT 90 manual should be kept at all times in a place that is accessible to any persons working with the machine Replacement manuals can be purchased from the equipment manufacturer or from your local dealer rr ei Uil e Only use parts and attachments supplied or approved by your Nexus equipment manufacturer The consequences of modifying the design of this equipment can include personal injury equipment failure and voiding your warranty If you are unsure about a repair or an apparent malfunction contact your Nexus dealer or the phone contacts at the bottom of each page of this manual t ATA e Technical service bulletins user s manual updates and other information are posted on the Nexus website http www nexusequip com Check this website periodically for updates or other potentially useful information about your equipment e NEVER use the NXT 90 in an enclosed space with poor air 5 flow such as a basement or small room The gasoline engine 222 uU produces among other things toxic carbon monoxide gas 4 ee Without proper ventilation this gas will build up and cause health effects such as organ damage and death to anyone in the vicinity e The Power Trowel operator should always be lucid and aware of his her
10. other models will simply set the Power Trowel to idle e Double Deadman System Designed to protect the operator and equipment in the event the operator lets go with both hands the engine will immediately shut down By using two deadman handles the operator can release either hand while holding on with the other without shutting down the engine When released the trowel will begin to spin freely but with the engine shut down even from full speed the trowel will come to a full stop within rotation Please refer to the Safety section for further details O Vii Toll Free 866 501 1683 Phone 905 458 5455 Fax 905 458 5484 Page 10 of 38 1 5 LIFTING THE NXT 90 The NXT 90 should always be lifted by mechanical means NEVER attempt to lift it by yourself as this can result in back strain and other injuries as well as damage to equipment and property Ensure the engine is not running and has cooled down before lifting CAUTION FIGURE 4 PROPER LIFTING The NXT 90 should be lifted by mechanical means With the handle folded and locked in position the lift point can be used with a grab hook or sling to lift the Power Trowel into position Toll Free 866 501 1683 Phone 905 458 5455 Fax 905 458 5484 Page 11 of 38 2 0 SAFETY The instructions provided in this manual are done so to ensure the operator s safety as well as that of others the equipment and the job site Failure to abide by these
11. surroundings NEVER operate the NXT 90 while under the influence of drugs alcohol fatigue sickness hangover extreme depression emotional distraction or medications substances that may affect motor skills or judgment e ALWAYS wear the appropriate personal protective equipment gt PPE while operating the NXT 90 Power Trowel This includes but is not limited to safety glasses hearing protection protective footwear and heavy or padded gloves Other safety gear may be job site appropriate D a e NEVER leave the NXT 90 unattended while running 9 Vii Toll Free 866 501 1683 Phone 905 458 5455 Fax 905 458 5484 Page 12 of 38 e ALWAYS ensure that the operators have been properly trained prior to using the equipment e Children and small animals should NEVER be present in the work area during operation of the NXT 90 e ALWAYS check your NXT 90 for loose or missing nuts and IN bolts before starting Tighten any loose fasteners and replace missing or broken parts e Perform all routine maintenance as described within this manual Failure to do so will void your warranty and will eventually result in premature equipment failure e NEVER perform maintenance on a running piece of equipment Shut down the engine and allow it to cool before servicing the NXT 90 including mechanical work or lubrication e ALWAYS replace missing damaged or unclear safety labels to ensure operator awareness and sa
12. 60 MODEL SHOWN Vii Toll Free 866 501 1683 Phone 905 458 5455 Fax 905 458 5484 Page 8 of 38 1 4 NXT 90 MAIN COMPONENTS DOUBLE DEADMAN THROTTLE LEVER HANDLE PITCH CONTROL ENGINE BELT GUARD SAFETY RING SPIDER ASSEMBLY FIGURE 3 NXT 90 MAJOR COMPONENTS HONDA GC160 MODEL SHOWN e Drivetrain o Engine The NXT 90 Power Trowel is available with three engine options Briggs amp Stratton Vanguard 6 5HP Honda GC160 and Honda GX160 The engine warranty is provided by the manufacturer For more details please refer to the engine manual included with your NXT 90 Missing manuals can be replaced by your equipment manufacturer directly or via your local dealer o Clutch and Belt The engine of the NXT 90 drives a centrifugal clutch allowing the engine to idle without turning the spider The drive belt when engaged with the clutch drives the gearbox pulley o Gearbox The NXT 90 gearbox is completely sealed and designed to avoid any leakage over the equipments lifetime The pulley attached to the countershaft drives a worm gear that turns the spider The spider assembly and blade pitch control hardware attach to main shaft Toll Free 866 501 1683 Phone 905 458 5455 Fax 905 458 5484 Page 9 of 38 e Belt Guard Designed to protect the operator from the rotating components of the drivetrain the belt guard mounts directly to the engine and should never be removed during operation
13. NEXUS Model NXT 90 POWER TROWEL Operator s Manual EX 0 Create d Date 01 2008 Revision 1 ORIGINAL LANGUAGE Revision Date 08 2009 OI N09101 Bartell Morrison Inc 375 Annagem Blvd Mississauga Ontario Canada L5T 3A7 Toll Free N A 866 501 1683 Phone 905 458 5455 Facsimile 905 458 5484 ORIGINAL LANGUAGE OPERATING INSTRUCTIONS FOR NEXUS WALK BEHIND POWER TROWELS O 2008 BY BARTELL MORRISON INC ALL RIGHTS RESERVED No part of this work may be reproduced or transmitted in any form or by any means electronic or mechanical including photocopying and recording or by any information storage or retrieval system without the prior written permission of Bartell Morrison Inc unless such copying is permitted by federal copyright laws Address inquiries or reference permissions care of Bartell Morrison Inc 375 Annagem Blvd Mississauga Ontario Canada L5T 3A7 0 0131 2008 lnitialdocumentrelease__________________ GMT i ili lu _ o l O 3Ni Toll Free 866 501 1683 Phone 905 458 5455 Fax 905 458 5484 Page 2 of 38 TABLE OF CONTENTS PRODUCT SAFETY eee 5 1 0 MEET THE NEXUS NXT 90 POWER TROWEL 6 1 1 EQUIPMENT USE AND CARE 6 1 2 SAFETY FEATURES 6 1 3 NXT 90 DIMENSIONS 7 1 4 NXT 90 MAIN COMPONENTS 9 1 5 LIFTING THE NXT 90 11 2 0 SAFETY nes 12 2 1 SAFETY AND OPERATIONAL LABELS 14 2 2 DOUBLE DEADMAN SAFETY HANDLE 17 3 0 SETTING UP THE NXT 90 18 3 1
14. S Clip on float blades are an optional addition to your NXT 90 allowing you to begin the trowelling operation much sooner after the concrete pour than the standard finishing blades The increased surface area of the float blades allows your NXT 90 to float on wetter concrete than the finishing blades will permit 9 Vii Toll Free 866 501 1683 Phone 905 458 5455 Fax 905 458 5484 Page 26 of 38 4 4 FLOAT PANS Panning is the earliest step that can be performed on wet concrete The optional float pan allows the NXT 90 to begin working on concrete at the earliest possible time after the pour and is the most effective tool for floating the concrete The float pan fits to the existing finishing blades with minimal effort As the concrete cures panning will become more taxing on the NXT 90 At this time switch to using float blades or finish blades FIGURE 19 TYPICAL NXT 90 FLOAT PAN Avoid lifting the NXT 90 with the float pan installed The pan may be secure enough to slide the equipment or lift over minor curbs but it may fall if lifted so ALWAYS avoid situations where it will cause injury or equipment damage WARNING Toll Free 866 501 1683 Phone 905 458 5455 Fax 905 458 5484 Page 27 of 38 45 BLADE PITCH The blade pitch is controlled by the knob directly behind the engine The blades are pitched up as the concrete cures in order to place more direct pressure on the surface
15. USING THE FOLDING HANDLE 18 3 2 STARTING THE NXT 90 21 4 0 TROWEL TECHNIQUE e 22 4 1 TROWELLING 23 4 2 POWER TROWEL BLADES 25 4 3 FLOAT BLADES 26 4 4 FLOAT PANS 27 4 5 BLADE PITCH 28 5 0 STORAGE AND SERVICE T_________________ 29 5 1 PREVENTATIVE MAINTENANCE AND ROUTINE SERVICE 30 5 2 ROUTINE SERVICE INTERVALS 32 5 3 STORAGE 32 5 4 TROWEL ARM ADJUSTMENT 33 CE DECLARATION OF CONFORMITY 36 NOTES e Men MM M 38 FIGURE PG FIGURE PG FIGURE 1 FOLDED DIMENSIONS 7 FIGURE 13 IDEAL TROWELLING MOTION 23 FIGURE 2 OPERATING DIMENSIONS 8 FIGURE 14 TROWELLING PASS DIR 24 FIGURE 3 MAJOR COMPONENTS 9 FIGURE 15 TYPICAL FINISHING BLADE 25 FIGURE 4 PROPER LIFTING 11 FIGURE 16 LOOSEN RETAINING BOLTS 25 FIGURE 5 LABEL LOCATIONS 14 FIGURE 17 ROTATE THE BLADE 26 FIGURE 6 DEADMAN HANDLE OPER 17 FIGURE 18 TYPICAL FLOAT BLADE 26 FIGURE 7 FOLDED HANDLE FEATURES 18 FIGURE 19 TYPICAL FLOAT PAN 27 FIGURE 8 UNLOCKING THE BAR 19 FIGURE 20 PITCHING THE BLADES 28 FIGURE 9 UNFOLDING THE HANDLE 20 FIGURE 21 TROWEL ARM LIFT ASSY 33 FIGURE 10 HANDLE LOCK KNOB 20 FIGURE 22 ARM ADJUSTMENT FIXTURE 33 FIGURE 11 PULL STARTING THE NXT 90 21 FIGURE 23 SPIDER ASSY OIL BATH FILL 34 FIGURE 12 STEERING THE NXT 90 22 Toll Free 866 501 1683 Phone 905 458 5455 Fax 905 458 5484 Page 3 of 38
16. a quality finish These blades will wear down with use each blade can be reversed when the first edge is no longer providing the desired finish quality When both edges have been expended it is time to replace the blade Refer to the Parts Catalogue for part numbers and ordering information Do not let your Power Trowel sit motionless in wet concrete for extended periods The blades will become stuck as the concrete cures and can damage the drivetrain upon restart If your Power Trowel does become stuck work the blades free by leaning it in several directions FIGURE 15 TYPICAL FINISH BLAD To reverse a blade follow these steps 1 Raise the NXT 90 above the floor by putting blocks under the safety ring or by suspending it by the hoist hook on the folded handle Work away from the wet concrete or any grates where small parts can be lost 2 Loosen the inner and outer retaining bolts using a wrench Loosen the inner bolt to the point that it can be removed see Figure 16 gt FIGURE 16 LOOSEN BLADE RETAINING BOLTS Toll Free 866 501 1683 Phone 905 458 5455 Fax 905 458 5484 Page 25 of 38 3 Remove the yellow thread plug in the outermost bolt hole 4 Rotate the blade around the outer retaining bolt and tighten the inner retaining bolt into the new hole see Figure 17 FIGURE 17 ROTATE THE BLADE 5 Replace the yellow thread plug in the old hole and re tighten the outer retaining bolt 4 3 FLOAT BLADE
17. ardous situation that COULD situation that could result in result in serious personal minor personal injury or injury or even death equipment damage WARNING CAUTION Toll Free 866 501 1683 Phone 905 458 5455 Fax 905 458 5484 NV Page 5 of 38 1 0 MEET THE NEXUS NXT 90 POWER TROWEL The equipment depicted in these instructions is a pedestrian controlled gasoline engine powered assembly including a rotor on which blades are attached that contact an uncured concrete surface The rotor turns around a central shaft when under power and is supported through a worm gear speed reducer For control of this assembly a handle is provided for the operator to grasp and manipulate the travel of the machine on the concrete surface The assembly includes safety devices in accordance with North American and International standards 1 1 EQUIPMENT USE AND CARE The Nexus NXT 90 Power Trowel is designed for use on uncured concrete It should be operated at all times in accordance with the instructions detailed in this manual e Use of this equipment for any purpose other than that stated within creates the risk of personal injury and or property damage e Any modifications to the equipment must be performed by the manufacturer or an authorized dealer and must be authorized in advance by the manufacturer e The equipment should be serviced cleaned and stored as detailed by this manual The manufacturer of this equipment cannot be held re
18. being trowelled To raise the blade pitch turn the pitch knob clockwise If the pitch is initially at the lowest setting several full turns will be required before the blades start to raise To lower the blade pitch turn the pitch knob counterclockwise see Figure 20 PITCH DOWN p PITCH UP FIGURE 20 PITCHING THE TROWEL BLADES The timing and degree of blade pitching depends entirely on your specific job site conditions concrete mix and trowelling skill The maximum blade pitch and finishing blades should be used for the final pass to maximize surface smoothness O Vii Toll Free 866 501 1683 Phone 905 458 5455 Fax 905 458 5484 Page 28 of 38 9 0 STORAGE AND SERVICE Proper maintenance inspection and storage of the NXT 90 is vital to preserving the performance of your equipment The most important daily activity is to keep the equipment clean and prevent the build up of dried concrete The NXT 90 can be cleaned with spray from a hose or pressure washer Remove all concrete residue concentrating on moving parts such as the spider assembly pitch assembly and drivetrain Dried on concrete must be removed from the NXT 90 before use as it can interfere with the proper operation by jamming moving parts and adding extra weight to the equipment degrading the balance Dried concrete is best removed using Liquid Hammer concrete remover as directed from Bartell Morrison Inc aU DUTY 41 8
19. ces e NEVER attempt to lift the NXT 90 alone always lift with a mechanical aid 2 1 SAFETY AND OPERATIONAL LABELS FIGURE 5 LABEL LOCATIONS HONDA GC160 MODEL SHOWN 9 Vii Toll Free 866 501 1683 Phone 905 458 5455 Fax 905 458 5484 Page 14 of 38 WWW NEXUSEQUIP COM Nexus Product Brand Labels Nexus Model and Serial Number plate 2 locations VOVNVO LNO NOLdNVHA 891 L0S 998 1 ONI NOSIHHON T131HV8 VOVNVO ME CELE EERE kel Tke RIPE 31300MN 1300M Product Model Number NXT 90 V WARNING Use appropriate protective clothing including hearing protection shatter resistant eyewear steel toed boots and protective handwear WARNING AVERTISSEMENT A NADVERTENCIA vION3Lu3AGvN 1N3M3SSILN3AV SNIN3IVM A ZNWARNING WARNING Keep hands and feet clear of NAVERTISSEMENT NADVERTENCIA Ss rotating blades DANGER Keep hands clear of drive belt while engine running ADANGER DANGER NPELIGRO Throttle control lever movement Stop Slow Fast WARNING Hot surface do not touch NWARNING NAVERTISSEMENT NADVERTENCIA Toll Free 866 501 1683 Phone 905 458 5455 Fax 905 458 5484 Page 15 of 38 DANGER Exhaust products can be toxic use in well ventilated environment DANGER DANGER NPELIGRO NCAUTION CAUTION Mechanical lift point hoist by this point only NPRECAUTION
20. e options there is a physical ON OFF switch on the engine The Honda GC160 includes the ON OFF switch on the throttle mechanism see next step Set the throttle to idle For the Honda GX160 and Vanguard 6 5 engines this means setting the throttle lever to minimum For the Honda GC160 which includes a shut down switch at the minimum throttle setting set the throttle lever to the idle position about 1 3 away from minimum setting Observe the throttle lever on the engine to better judge what position is appropriate ALWAYS set the throttle to idle during startup Failure to do so will cause the blades to start turning immediately risking personal injury WARNING O Hold one of the deadman levers inward with your left hand and grab the starter cord with your right hand While constantly holding the deadman lever down firmly pull the starter cord as directed in your engine s manual see Figure 11 FIGURE 11 PULL STARTING THE NXT 90 Toll Free 866 501 1683 Phone 905 458 5455 Fax 905 458 5484 Page 21 of 38 4 0 TROWEL TECHNIQUE Practice makes permanent To practice using the NXT 90 find a clean flat and smooth existing concrete floor A rough floor will damage your trowel blades and create excessive vibration Unfold the handle start the engine and learn the feel and control of your Nexus Power Trowel starting at low throttle and working up to full throttle The easiest direction to pull the NXT 90 is backward
21. fety e NEVER operate the NXT 90 with missing or damaged safety Qy guards Replace immediately with appropriate Nexus parts b e NEVER put hands feet or other appendages inside the guard 41 ring or belt guard while the engine is running even at idle or with protective clothing as serious injury may result e NEVER wear loose fitting clothing or jewellery around rotating equipment such as the NXT 90 as it may become entangled in the machinery resulting in serious injury e NEVER fuel the NXT 90 while the engine is running Ensure the engine has cooled sufficiently before refueling to avoid igniting gasoline fumes e ALWAYS refuel the NXT 90 in a well ventilated area away from ignition sources such as sparks flames and lit cigarettes omoking while fuelling the equipment may result in explosion e NEVER operate the NXT 90 in explosive environments such as those where paint fumes methane natural gas fine particulate aerosol propellant or solvent fumes are present e NEVER smoke near the NXT 90 as stray gasoline fumes may ignite Operating the NXT 90 around an open flame may also result in explosion e ALWAYS shut down the engine and allow it to cool off before lifting or transporting the NXT 90 Toll Free 866 501 1683 Phone 905 458 5455 Fax 905 458 5484 Page 13 of 38 ALWAYS tie down the NXT 90 when being transported in a truck or on a flatbed Empty the fuel tank if transporting it over long distan
22. hs or 200 hrs Each 9 months or 300 hrs Each 12 months or 400 hrs Guards Check Warning stickers Check Test run Controls Check operation Dead man switch operation Check Pitch control assembly Engine Check Lubricate Engine oil Check Level Change Engine oil filter Replace Oil cooler Clean Cooling Fins Clean Air cleaner Check clean Replace Air Intake Line Check Replace 2 yrs Fan Belt Check tightness O Replace 500 hrs Valve clearance Check adjust Fuel filter Check amp Clean Replace Fuel Tank Clean 500 hrs Engine wiring Check Drive Train O Clutch Pulley operation Check Spider plate assembly Check Lubricate V Belt Check Blades Gearbox Check Gearbox oil Check Level Change Gearbox breathers Check operation Toll Free 866 501 1683 Phone 905 458 5455 Fax 905 458 5434 Page 31 of 38 5 2 ROUTINE SERVICE INTERVALS Due to the nature and environment of use Nexus Power Trowels could be exposed to severe operating conditions Some general maintenance guidelines will extend the useful life of your trowel 9 9 The initial service for your Power Trowel should be performed after 25 hours of use at which time your mechanic or authori
23. ine Num ro de S rie moteur Masse Type Serienummer machine Serienummer motor Gewicht Modelo M quina n mero de s rie Motor n mero de s rie Masa Modelo Numero de serie da maquina Numero de serie do motor Massa Modello Numero di seria la macchina Numero di seria la motore Massa Lbs kg NXT 90 Walk Behind Power Trowel 140 63 6 Noise Level Pressure level Vibration level Puissance acoustique Pression acoustique Niveau de vibration Geluidniveau Geluidsdrukniveau Vibratieniveau Nivel Sonoro Nivel Acustico Nivel de Vibracion Nivel del Ruido Press o Acustica Nivel de Vibrac o Potenza Acustica Pressione Acustica Livello di Vibrazione The Technical Construction file is maintained at Bartell Morrison Inc Les fiches techniques de construction sont gard es 375 Annagem Blvd Het technische constructie document wordt bewaard te Mississauga Ontario Canada El archivo t cnico de construcci n se mantiene en L5T 3A7 O arquivo t cnico de constru o mantido no a Telephone 905 458 5455 L originale dossier tecnico di construzione conservato presso Facsimile 905 458 5484 The authorized representative is Le repr sentant autoris est Mr Steve Adam Gemachtigd vertegenwoordiger is International Sales Manager La representaci n autorizada es c o Bartell Morrison Europe O representante autorizado Nijverheidsstraat 11 Il rappresentate autorizzato 1840 Londerzeel Signature of Authorized Person Belgium
24. ock arm at the hook and push backward toward the engine until the latch releases the grab bar see Figure 8 2 Once the latch is free lower the hook beneath the grab bar and bring it forward until the lock arm is completely free of the grab bar see Figure 8 3 Unfold the handle completely Fold the lock arm down to be flush with the upper handle see Figure 9 4 Insert the lock screw with hand knob near the joint into the nut on the lower a Z handle Turn the hand knob clockwise until it is fully tightened see Figure 10 Do not overtighten the hand knob using a wrench or other tool as this will make unlocking the handle difficult and risks stripping the threads on the lock screw FIGURE 8 UNLOCKING THE LOCK BAR Toll F ree 866 501 1683 Phone 905 458 5455 Fax 905 458 5484 Page 19 of 38 x Laos AID FOLD LOCK SRA ARM DOWN SCA Ue FIGURE 9 UNFOLDING THE HANDLE LOCK HANDLE UNFOLDED FIGURE 10 HANDLE LOCK KNOB 9 Ni Toll Free 866 501 1683 Phone 905 458 5455 Fax 905 458 5484 Page 20 of 38 3 2 STARTING THE NXT 90 Please refer to your engine s manual for details and troubleshooting The startup procedure is the same for all 3 engine options 1 2 3 Set the engine s fuel flow valve lever to ON Set the engine choke to ON Set the engine s master switch to ON For the Honda GX160 and Vanguard 6 5 engin
25. ore approaching it again WARNING Toll Free 866 501 1683 Phone 905 458 5455 Fax 905 458 5484 NV Page 17 of 38 3 0 SETTING UP THE NXT 90 Your Nexus NXT 90 comes fully assembled with the folding handle and engine already installed Nexus equipment is shipped without engine oil or gasoline so fill these fluids per your engine s instruction manual before proceeding When starting an engine for the first time or after a long period of storage several pulls may be required before the engine runs NEVER attempt to add fuel or oil to the engine while it is running Shut down the engine and allow it to cool down before opening the fuel cap for refueling NEVER smoke while handling gasoline If gasoline is spilled anywhere on or around the equipment wipe it up and allow the fumes to clear before starting the engine DANGER 3 1 USING THE FOLDING HANDLE The handle of the NXT 90 folds forward and locks into position for storage and transportation The upper handle becomes a protective cage for the engine and a balanced hoist point for mechanical lifting LIFTING POINT FIGURE 7 FOLDED HANDLE FEATURES 9 Vii Toll Free 866 501 1683 Phone 905 458 5455 Fax 905 458 5484 Page 18 of 38 ALWAYS unfold the handle and lock in the open position before starting the engine Failure to do this may result in equipment damage or personal injury WARNING To completely unfold the handle 1 Grab the l
26. ration of Conformity Certificat de conformit Gelijkvormigheids certificaat Declaracion de Conformidad Declaragao de Conformidade Dichiarazione Di Conformita We Bartell Morrison Inc 375 Annagem Blvd Mississauga Ontario Canada L5T 3A7 Tel 905 458 5455 Fax 905 458 5484 Declare under our sole responsibility that the product to which this declaration relates is in conformity with the following standard s or other normative documents D clarons sous notre responsabilit que le produit cette d claration est conforme aux normes suivantes ou d autres documents habituels Verklaren onder onze verantwoordelijkheid dat het product naar welke de verklaring verwijst conform de volgende standaards of anders gebruikelijke documenten is Declaramos bajo nuestra nica responsabilidad que el producto en lo que esta declaraci n concierne es conforme con la siguiente normativa u otros documentos Declara sob sua responsabilidade que o produto a quem esta declarac o interessar est em comformidade com os seguintes documentos legais ou normas directivas Dichiariamo sotto la ns unica responsibilita che il prodotto al quale questa dichiarazione si riferisce fabbricato in conformit ai seguenti standard e documenti di normative Safety of Machinery Minimum gaps to avoid crushing of parts of the human body oafety of Machinery Emergency stop equipment functional aspects Principles for design oafety of Machinery Basic Concepts
27. rd finish blades the concrete should be cured enough that the operator does not leave a footprint deeper than about 3mm 1 8 inch The ideal way to trowel is to work backward traveling up and down the slab pulling the Power Trowel toward you and making elongated overlapping sweeps see Figure 13 This allows you to thoroughly cover your footprints in the concrete as you walk Work steadily and patiently going too fast will result in poor consolidation and an unattractive finish Each pass should be made in a perpendicular direction to the previous one see Figure 14 es FIGURE 13 IDEAL TROWELLING MOTION ALWAYS look where you are going Be aware of any pipes or other protrusions from the concrete to avoid tripping or striking the blades Striking the blades can bend the trowel arms or damage the drivetrain CAUTION Toll Free 866 501 1683 Phone 905 458 5455 Fax 905 458 5484 Page 23 of 38 KK DDD E p 4 STA fa gt memg f ee E Y S ISIN LABS UTE mU m udis 3 ES 327 com p pO NN t Y 1ST PASS END LYVLS SSVd ANZ FIGURE 14 TROWELLING PASS DIRECTION G Toll Free 866 501 1683 Phone 905 458 5455 Fax 905 458 5484 Page 24 of 38 BM 4 2 POWER TROWEL BLADES The NXT 90 comes equipped with four 4 reversible 6 inch x 14 inch 15 25cm x 35 5cm finishing blades see Figure 15 The special trowel steel of each blade will provide your concrete with
28. safety handles should be periodically checked for function to ensure the safety system is working properly NEVER service the NXT 90 while the engine is running Observe all fire and safety protocols outlined in the Safety section of this manual DANGER Toll Free 866 501 1683 Phone 905 458 5455 Fax 905 458 5484 Page 29 of 38 5 1 PREVENTATIVE MAINTENANCE AND ROUTINE SERVICE PLAN This Power Trowel has been assembled with care and will provide years of service Preventative maintenance routine service and proper use are essential to the long life of your equipment Your dealer is interested in your new machine and has the desire to help you get the most value from it After reading through this manual thoroughly you will find that you can do some of the regular maintenance yourself However when in need of parts or major service be sure to see your Nexus dealer For your convenience we have provided this space to record relevant data about your NXT 90 When in need of parts or service be prepared to provide your serial number Locate the serial number now and record in the space below REPLACEMENT PARTS USED MAINTENANCE LOG PartNo Quantity Cost Date Date Operation 9 Vii Toll Free 866 501 1683 Phone 905 458 5455 Fax 905 458 5484 Page 30 of 38 Routine Service Intervals General Inspection After 1 5 months or 50 hrs Each 3 months or 100 hrs Each 6 mont
29. sponsible for any damages resulting from misuse abuse or neglect 1 2 SAFETY FEATURES The Nexus NXT 90 Power Trowel is equipped with safety guards in accordance with North American and International standards The main safety ring protects the blades from collisions with solid objects but more importantly protects the operator from the blades The belt guard protects the operator from the main drive belt The handle is equipped with a double deadman operator presence system as standard equipment The use and function of this system is covered in the next section NEVER attempt to disable or circumvent these safety devices They are present for the operators protection and any tampering will result in substantial risk to the operator and all present at the job site If your NXT 90 safety devices have been tampered with do not use the Power Trowel Immediately contact your sales representative to obtain replacement parts or return the trowel to your dealer for repairs DANGER 9 Vii Toll Free 866 501 1683 Phone 905 458 5455 Fax 905 458 5484 Page 6 of 38 1 3 NXT 90 DIMENSIONS y T 41 3 8 105cm MEM FIGURE 1 FOLDED DIMENSIONS HONDA GC160 MODEL SHOWN Toll Free 866 501 1683 Phone 905 458 5455 Fax 905 458 5484 Page 7 of 38 28 1 8 71 5cm 37 1 2 95cm unm 38 3 4 98cm EE tJ 64 3 8 163 5cm i FIGURE 2 OPERATING DIMENSIONS HONDA GC1
30. uel shut off valve Siphon all possible gasoline from the fuel tank otart the engine with the fuel shut off valve still closed and let it run until it stops on its own This prevents the build up of residue in the carburetor Remove the spark plug and pour 2 oz of SAE 30 or SAE 40 motor oil into the cylinder Slowly crank the engine 2 3 times to distribute the oil throughout the cylinder to prevent corrosion during storage Store the NXT 90 upright in a cool dry well ventilated place 9 Vii Toll Free 866 501 1683 Phone 905 458 5455 Fax 905 458 5484 Page 32 of 38 9 4 TROWEL ARM ADJUSTMENT If your NXT 90 Power Trowel is experiencing excessive wobble while in use i e the entire machine is rocking at the same rate that the blades are turning you may have a bent or out of alignment trowel arm Inspect the trowel arms for a distinct bend If one or more arms are in fact bent they must be replaced If the arms are not bent then they require adjustment The optional trowel arm adjustment fixture allows fast and accurate trowel arm calibration Refer to the parts catalogue at the end of this manual for part numbers and ordering information To calibrate the trowel arms of your NXT 90 1 Removethe finishing blades from your NXT 90 2 Remove the spider assembly and remove the four 4 trowel arms from the hub by loosening the set screw for each one 3 On each trowel arm loosen the locking jam nut for each carriage
31. zed repair shop should complete all of the recommended checks in the schedule on Page 31 The Routine Service Intervals chart is handy for keeping a record of the maintenance performed and the parts used for servicing your equipment Regular service according to the previous schedule will prolong the life of the NXT 90 and prevent expensive repairs Keeping your NXT 90 clean and free from debris is the single most important regular maintenance operation over and above the checks in the service schedule above that can be performed After each use your Power Trowel should be cleaned to remove any dust and debris from the undercarriage and surrounding components Use of a power washer will make clean up quick and easy especially if a non stick coating was applied prior to use Dried concrete is most easily cleaned off using Liquid Hammerfrom Bartell Morrison Inc In the Service Schedule above items that should be checked replaced or adjusted are indicated by o in the appropriate column All Power Trowels have governed engine speed of 3600 rpm See the engine manufacturers manual for exact specifications Failure to have your NXT 90 regularly serviced and properly maintained in accordance with the manufacturer s instructions will lead to premature failure and void the warranty STORAGE The following steps should be taken to prepare your NXT 90 for extended storage n d Clean all concrete residue from the equipment Close the f
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