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•

Be

Be

Be

Belt Guard:

lt Guard:

lt Guard:

lt 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.

•

Safety Ring:

Safety Ring:

Safety Ring:

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.

•

Spider:

Spider:

Spider:

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.

•

Handle:

Handle:

Handle:

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

Trowel Technique

section for details on how to

properly use the NXT-90.

•

Throttle Lever:

Throttle Lever:

Throttle Lever:

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 other models will simply set the Power
Trowel to idle.

•

Double Deadman System:

Double Deadman System:

Double Deadman System:

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  ½  rotation.  Please  refer  to  the

Safety

section for further

details.

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Summary of Contents for NXT-90

Page 1: ...ANGUAGE Document NEX 0001 Created Date 01 2008 Revision 1 Revision Date 08 2009 OI N09101 POWER TROWEL POWER TROWEL POWER TROWEL POWER TROWEL Model Model Model Model NXT NXT NXT NXT 90 90 90 90 Operator s Manual Operator s Manual Operator s Manual Operator s Manual ...

Page 2: ...RISON INC ALL RIGHTS RESERVED Revision Rev Date Details Approved 0 01 31 2008 Initial document release G M T 1 08 17 2009 Relocation D M 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 s...

Page 3: ...ICE 5 0 STORAGE AND SERVICE 5 0 STORAGE AND SERVICE 29 29 29 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 CE DECLARATION OF CONFORMITY CE DECLARATION OF CONFORMITY CE DECLARATION OF CONFORMITY 36 36 36 36 NOTES NOTES NOTES NOTES 38 38 38 38 TABLE OF ILLUSTRATIONS FIGURES TABLE OF ILL...

Page 4: ...Toll Free 866 501 1683 Phone 905 458 5455 Fax 905 458 5484 Page 4 of 38 This page intentionally left blank ...

Page 5: ...ALERT SYSTEM PRODUCT SAFETY AND HAZARD ALERT SYSTEM PRODUCT SAFETY AND HAZARD ALERT SYSTEM PRODUCT SAFETY AND HAZARD ALERT SYSTEM This Operating Manual presents Product Safety and Hazard Alert Information in accordance with American National Standards Institute and International Organization for Standardization recommendations as laid out in ANSI Z535 and ISO 3864 The callouts of DANGER WARNING CA...

Page 6: ...nd or property damage Any modifications to the equipment must be performed by the manufacturer or an authorized dealer and must be authorized in advance by the manufacturer The equipment should be serviced cleaned and stored as detailed by this manual The manufacturer of this equipment cannot be held responsible for any damages resulting from misuse abuse or neglect 1 2 1 2 1 2 1 2 SAFETY FEATURES...

Page 7: ... 5455 Fax 905 458 5484 Page 7 of 38 1 1 1 1 3 3 3 3 NXT NXT NXT NXT 90 90 90 90 DIMENSIONS DIMENSIONS DIMENSIONS DIMENSIONS FIGURE 1 FIGURE 1 FIGURE 1 FIGURE 1 FOLDED DIMENSIONS HONDA GC160 MODEL SHOWN 38 3 4 98cm 27 5 8 70cm 41 3 8 105cm ...

Page 8: ...ll Free 866 501 1683 Phone 905 458 5455 Fax 905 458 5484 Page 8 of 38 FIGURE 2 FIGURE 2 FIGURE 2 FIGURE 2 OPERATING DIMENSIONS HONDA GC160 MODEL SHOWN 28 1 8 71 5cm 38 3 4 98cm 37 1 2 95cm 64 3 8 163 5cm ...

Page 9: ...r 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 Clutch and Belt Clutch and Belt 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...

Page 10: ... replaced Handle Handle Handle 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 Trowel Technique section for details on how to properly use the NXT 90 Throttle Lever Throttle L...

Page 11: ...tempt 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 FIGURE 4 FIGURE 4 FIGURE 4 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 ...

Page 12: ...of each page of this manual Technical service bulletins user s manual updates and other information are posted on the Nexus website http www nexusequip com http www nexusequip com http www nexusequip com http www nexusequip com Check this website periodically for updates or other potentially useful information about your equipment NEVER use the NXT 90 in an enclosed space with poor air flow such a...

Page 13: ...e immediately with appropriate Nexus parts NEVER put hands feet or other appendages inside the guard ring or belt guard while the engine is running even at idle or with protective clothing as serious injury may result 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 NEVER fuel the NXT...

Page 14: ...bed Empty the fuel tank if transporting it over long distances NEVER attempt to lift the NXT 90 alone always lift with a mechanical aid 2 1 2 1 2 1 2 1 SAFETY AND OPERATIONAL LABELS SAFETY AND OPERATIONAL LABELS SAFETY AND OPERATIONAL LABELS SAFETY AND OPERATIONAL LABELS FIGURE 5 FIGURE 5 FIGURE 5 FIGURE 5 LABEL LOCATIONS HONDA GC160 MODEL SHOWN ...

Page 15: ...odel Number NXT 90 5 5 5 5 WARNING Use appropriate protective clothing including hearing protection shatter resistant eyewear steel toed boots and protective handwear 6 6 6 6 WARNING Keep hands and feet clear of rotating blades 7 7 7 7 DANGER Keep hands clear of drive belt while engine running 8 8 8 8 Throttle control lever movement Stop Slow Fast 9 9 9 9 WARNING Hot surface do not touch ...

Page 16: ...ventilated environment 11 11 11 11 CAUTION Mechanical lift point hoist by this point only 12 12 12 12 Maximum sound level 105dB 13 13 13 13 WARNING Shut down engine and allow sufficient cooling time before refueling this equipment 14 14 14 14 CAUTION Read and understand entire operator s manual before using or servicing this equipment ...

Page 17: ...ency the engine will shut down to prevent runaway equipment ENGINE RUN ENGINE RUN ENGINE RUN ENGINE RUN ENGINE RUN ENGINE RUN ENGINE RUN ENGINE RUN ENGINE STOP ENGINE STOP ENGINE STOP ENGINE STOP FIGURE 6 FIGURE 6 FIGURE 6 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 releas...

Page 18: ...fore 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 3 1 3 1 3 1 3 1 USING THE FOLDING HANDLE USING THE FOLDING HA...

Page 19: ...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 handle Turn the hand knob clockwise until it is fully tightened see Figure 10 Do not overtighte...

Page 20: ...Toll Free 866 501 1683 Phone 905 458 5455 Fax 905 458 5484 Page 20 of 38 FIGURE 9 FIGURE 9 FIGURE 9 FIGURE 9 UNFOLDING THE HANDLE FIGURE 10 FIGURE 10 FIGURE 10 FIGURE 10 HANDLE LOCK KNOB ...

Page 21: ...he 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 du...

Page 22: ...tate away from you while the engine is running so hold it firmly to keep it steady 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...

Page 23: ...ve 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 ...

Page 24: ...Toll Free 866 501 1683 Phone 905 458 5455 Fax 905 458 5484 Page 24 of 38 FIGURE 14 FIGURE 14 FIGURE 14 FIGURE 14 TROWELLING PASS DIRECTION ...

Page 25: ...ers 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 1 FIGURE 1 FIGURE 1 FIGURE 15 5 5 5 TYPICAL FINISH BLADE To reverse a blade follow these step...

Page 26: ...e yellow thread plug in the old hole and re tighten the outer retaining bolt 4 3 4 3 4 3 4 3 FLOAT BLADES FLOAT BLADES FLOAT BLADES FLOAT BLADES 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 o...

Page 27: ...ective 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 1 FIGURE 1 FIGURE 1 FIGURE 19 9 9 9 TYPICAL NXT 90 FLOAT PAN Avoid lifting the NXT 90 with the float pan installed The pan may be secure enough to slide the...

Page 28: ...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 FIGURE FIGURE FIGURE FIGURE 20 20 20 20 PITCHING THE TROWEL BLADES The timing and degree of blade pitching depends entirely on your specific job site conditions conc...

Page 29: ... 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 ...

Page 30: ...ual 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 Date Purc...

Page 31: ... o o o Pitch control assembly Lubricate o o o o o Engine Check Level o o o o o o Engine oil Change o o o Engine oil filter Replace o o Oil cooler Clean o o o o Cooling Fins Clean o o o o o Check clean o o o o o o Air cleaner Replace o Check o Air Intake Line Replace 2 yrs Check tightness o o Fan Belt Replace 500 hrs Valve clearance Check adjust o o Check Clean o o o o Fuel filter Replace o o Fuel ...

Page 32: ...riage 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 Hammer from 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 ...

Page 33: ...re 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 Remove the 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 n...

Page 34: ...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 FIGURE 23 FIGURE 23 FIGURE 23 FIGURE 23 SP...

Page 35: ...Toll Free 866 501 1683 Phone 905 458 5455 Fax 905 458 5484 Page 35 of 38 This page intentionally left blank ...

Page 36: ...ps to avoid crushing of parts of the human body EN 418 1993 Safety of Machinery Emergency stop equipment functional aspects Principles for design EN 12100 1 2003 Safety of Machinery Basic Concepts general principles for design Part 1 Basic Terminology methodology EN 12100 2 2003 Safety of Machinery Basic Concepts general principles for design Part 2 Technical Principles EN ISO 4872 1978 Acoustics ...

Page 37: ... de construção é mantido no a L originale dossier tecnico di construzione è conservato presso Bartell Morrison Inc 375 Annagem Blvd Mississauga Ontario Canada L5T 3A7 Telephone 905 458 5455 Facsimile 905 458 5484 The authorized representative is Le représentant autorisé est Gemachtigd vertegenwoordiger is La representación autorizada es O representante autorizado é Il rappresentate autorizzato Mr ...

Page 38: ...Toll Free 866 501 1683 Phone 905 458 5455 Fax 905 458 5484 Page 38 of 38 NOTES NOTES NOTES NOTES ...

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