ANSI-B175.3-2003.pdf
American National Standard for Outdoor Power Equipment Grass Trimmers and Brushcutters Safety Requirements ANSI B175.3-2003 ANSI B175.3-2003 Copyright American National Standards Institute Provided by IHS under license with ANSI Licensee=USN Ship Repair Facility Yokosuka/9961031100 Not for Resale, 05/08/2007 20:26:49 MDTNo reproduction or networking permitted without license from IHS -,-,- Copyright American National Standards Institute Provided by IHS under license with ANSI Licensee=USN Ship Repair Facility Yokosuka/9961031100 Not for Resale, 05/08/2007 20:26:49 MDTNo reproduction or networking permitted without license from IHS -,-,- ANSI B175.3-2003 Revision of ANSI B175.3-1997 ® American National Standard for Outdoor Power Equipment Grass Trimmers and Brushcutters Safety Requirements Secretariat Outdoor Power Equipment Institute Approved July 9, 2003 American National Standards Institute, Inc. Copyright American National Standards Institute Provided by IHS under license with ANSI Licensee=USN Ship Repair Facility Yokosuka/9961031100 Not for Resale, 05/08/2007 20:26:49 MDTNo reproduction or networking permitted without license from IHS -,-,- Approval of an American National Standard requires review by ANSI that the requirements for due process, consensus, and other criteria for approval have been met by the standards developer. Consensus is established when, in the judgement of the ANSI Board of Standards Review, substantial agreement has been reached by directly and materially affected interests. Substantial agreement means much more than a simple majority, but not necessarily unanimity. Consensus requires that all views and objections be considered, and that a concerted effort be made towards their resolution. The use of American National Standards is completely voluntary; their existence does not in any respect preclude anyone, whether he has approved the standards or not, from manufacturing, marketing, purchasing, or using products, processes, or procedures not conforming to the standards. The American National Standards Institute does not develop standards and will in no circumstances give an interpretation of any American National Standard. Moreover, no person shall have the right or authority to issue an interpretation of an American National Standard in the name of the American National Standards Institute. Requests for interpretations should be addressed to the secretariat or sponsor whose name appears on the title page of this standard. CAUTION NOTICE: This American National Standard may be revised or withdrawn at any time. The procedures of the American National Standards Institute require that action be taken periodically to reaffirm, revise, or withdraw this standard. Purchasers of American National Standards may receive current information on all standards by calling or writing the American National Standards Institute. American National Standard Published by American National Standards Institute, Inc. 25 West 43rd Street, New York, NY 10036 Copyright © 2003 by American National Standards Institute, Inc. All rights reserved. No part of this publication may be reproduced in any form, in an electronic retrieval system or otherwise, without prior written permission of the publisher. Printed in the United States of America Copyright American National Standards Institute Provided by IHS under license with ANSI Licensee=USN Ship Repair Facility Yokosuka/9961031100 Not for Resale, 05/08/2007 20:26:49 MDTNo reproduction or networking permitted without license from IHS -,-,- i Contents Page Foreword.iii 1Scope and Purpose 1 2Normative References 1 3Definitions. 1 4Cutting Attachment Shield 4 5Clutches 5 6Engine Stopping Device. 5 7Cutting Attachment. 6 8Product Integrity . 7 9Sound Levels 8 10Vibration . 12 11Hot Surfaces. 16 12Exhaust Gases. 17 13Handle(s), Barrier(s), and Harness(es) 17 14Throttle Control. 18 15Fuel Tanks and Oil Tanks. 18 16Labeling Requirements. 19 17Operators Manual(s) Instruction 19 Figures 1Operating/Cutting Position 23 2Brushcutter Diagram with Nomenclature 24 3Brushcutter Shield Dimensions 26 4Grass Trimmer Shield Dimensions. 27 5Barrier Configuration Examples 28 6Impact Test. 29 7Unit with Harness . 30 8Unit without Harness 30 9Microphone Location - Operators Ear 31 10Microphone Location - Bystander. 32 11Weighting Filter Frequency Attenuation . 33 12Typical Accelerometer Locations 34 13Weighted Acceleration Sum (WAS) 35 14Cutting Shield Integrity Test . 36 Copyright American National Standards Institute Provided by IHS under license with ANSI Licensee=USN Ship Repair Facility Yokosuka/9961031100 Not for Resale, 05/08/2007 20:26:49 MDTNo reproduction or networking permitted without license from IHS -,-,- ii Page 15Minimum Horizontal Distance from Suspension to Cutting Attachment. 37 Annexes ARationale 38 BBibliography 40 Copyright American National Standards Institute Provided by IHS under license with ANSI Licensee=USN Ship Repair Facility Yokosuka/9961031100 Not for Resale, 05/08/2007 20:26:49 MDTNo reproduction or networking permitted without license from IHS -,-,- iii Foreword (This foreword is not part of American National Standard ANSI B175.3-2003.) This standard is the first revision of American National Standard Grass Trimmers and Brushcutters, ANSI B175.3-1997. The first edition of this standard was developed under the auspice of the Portable Power Equipment Manufacturers Association (PPEMA) and published in 1997. In 2002, PPMEA discontinued operations and the Outdoor Power Equipment Institute (OPEI) became the secretariat for this standard since some OPEI member compa- nies manufacture grass trimmers and brushcutters. The present revision of this stan- dard was prepared by the ANSI B175.3 Committee on Trimmers and Brushcutters as part of OPEIs continuing work on standards. A summary of the principal changes included in this revision is as follows: - “Convertible unit“ in the Scope was clarified. - The definition for Operator/Cutting Position was modified to account for the pos- sibility of the operator being on the opposite side of the machine depicted in Figure 1. - Section 6.1, Engine Stopping Device, was modified to include requirements for both blade capable and non-blade capable units. - Section 7.1, Cutting Attachment Retention, was updated. - A new section, Section 8, Product Integrity, was added. - Section 10.3, Vibration Test Conditions, was changed to require the manufacture to test the unit with the cutting attachment that the manufacturer determines will create the highest vibration level. - Section 13.1.2 (distance between the two handles) was modified and now in- cludes a requirement for on-product labeling if the distance is adjustable to less than ten (10) inches. - Section 13.2, Barrier(s) and Restrictive Harness(es), was modified to state “a barrier between the operator and cutting attachment“, whereas in the prior ver- sion the barrier location was implied. - Figures 1 and 2 were updated. Consensus for this standard was achieved by use of the Canvass Method. There are two annexes in this standard. Annexes A and B are informative and are not considered part of this standard. Suggestions for improvements to this standard are welcome. They should be sent to the Outdoor Power Equipment Institute, 341 South Patrick Street, Alexandria, VA 22314. The following organizations recognized as having an interest in the standardization of safety requirements for trimmers and brushcutters were contacted prior to the ap- proval of this revised standard. Inclusion in the list does not necessarily imply that the organization concurred with the submittal of the proposal to ANSI. Copyright American National Standards Institute Provided by IHS under license with ANSI Licensee=USN Ship Repair Facility Yokosuka/9961031100 Not for Resale, 05/08/2007 20:26:49 MDTNo reproduction or networking permitted without license from IHS -,-,- iv American Society of Agricultural Engineers Capro, Inc. Echo, Inc. North American Equipment Dealers Association Piedmont Technical Associates, Inc. Power Tool Institute Solo, Inc. Southland Engineering Systems Stihl, Inc. Texas Tech University US Consumer Product Safety Commission US Testing Company, Inc. Underwriters Laboratories, Inc. Copyright American National Standards Institute Provided by IHS under license with ANSI Licensee=USN Ship Repair Facility Yokosuka/9961031100 Not for Resale, 05/08/2007 20:26:49 MDTNo reproduction or networking permitted without license from IHS -,-,- AMERICAN NATIONAL STANDARD ANSI B175.3-2003 American National Standard for Outdoor Power Equipment Grass Trimmers and Brushcutters Safety Requirements 1 1. Scope and Purpose 1.1 Scope The requirements of this Standard1 apply to: a) portable hand-supported gasoline powered grass trimmers2 intended for use with flexible nonmetallic line, or other types of nonmetallic cutting attachments, and b) portable, hand-supported, gasoline-powered brushcutters intended for use with cutting blades and other cutting attachments. NOTE - If a grass trimmer is marketed by the manufacturer as convertible to a brushcutter, then the converted unit shall comply with requirements for brushcutters and vice-versa. A convertible unit may be marketed as a grass trimmer or a brushcutter without including the devices required for conversion in the packaging, provided the operator manual clearly addresses the need to acquire and use the required conversion devices and the manufacturer makes such devices available as optional equipment. 1.2 Purpose The purpose of this standard is to establish minimum manufacturer requirements to reduce the risk of injury associated with the use of portable, hand-supported, gasoline- powered grass trimmers and brushcutters. 2 Normative References The following standards contain provisions which, through reference in this text, constitute provisions of this American National Standard. At the time of publication, the editions indicated were valid. All standards are subject to revision, and parties to agreements based on this American National Standard are encouraged to investigate the possibility of applying the most recent editions of the standards indicated below. 1) Metric conversions are shown in brackets and are included for information only. 2) Trimmers and Brushcutters with back mounted power units are not covered by this standard. Copyright American National Standards Institute Provided by IHS under license with ANSI Licensee=USN Ship Repair Facility Yokosuka/9961031100 Not for Resale, 05/08/2007 20:26:49 MDTNo reproduction or networking permitted without license from IHS -,-,- ANSI B175.3-2003 2 ANSI Z87.1-2003, Practice for Occupational and Educational Eye and Face Protection ANSI/ASTM E29-1993 (R1999), Practice for Using Significant Digits in Test Data to Determine Conformance with Specifications IEC 184, Methods for Specifying the Characteristics of Electro-Mechanical Transducers for Shock and Vibration Management IEC 222, Methods of Specifying the Characteristics of Auxiliary Equipment of Shock and Vibration Measurements IEC 61672-1:2002, Electroacoustics Sound Level Meters Part 1: Specifications IEC 61672-2:2003, Electroacoustics Sound Level Meters Part 2: Pattern Evaluation Tests SAE J335-JUN95, Multiposition Small Engine Exhaust System Fire Ignition Suppression 3 Definitions. 3.1 Barrier: A device intended to restrain the operator from moving toward the cutting attachment and vice-versa, and intended to prevent inadvertent operator contact with the cutting attachment. (See Figures 1 and 5.) 3.2 Blade-Capable Units: All brushcutters, and any trimmer that its manufacturer markets as convertible to a brushcutter. 3.3 Blade Retainer: A mechanism that holds the brushcutter blade to the driving member. 3.4 Blade Thrust: The sudden sideways, forward or backward motion of the unit, which may occur when the blade jams or catches on an object such as a sapling or tree stump. 3.5 Brushcutter: Unit using a rotating blade made of metal or plastic intended to cut weed, brush, small trees and similar vegetation. (See Figure 2(a).) 3.6 Choke: A control that is used to enrich the carburetor fuel/air mixture. 3.7 Clutch: A mechanism for connecting and disconnecting a driven member to and from a rotating source of power. 3.8 Cutting Attachment: Any rotating device(s) used to cut vegetation. 3.9 Cutting Attachment Shield: A structure covering a portion of the cutting attachment arc. 3.10 Cutting Blade: A rotating device made of rigid material with cutting edges. 3.11 Drive Shaft: A shaft used to transmit power from the engine to the cutting attachment. Copyright American National Standards Institute Provided by IHS under license with ANSI Licensee=USN Ship Repair Facility Yokosuka/9961031100 Not for Resale, 05/08/2007 20:26:49 MDTNo reproduction or networking permitted without license from IHS -,-,- ANSI B175.3-2003 3 3.12 Family: A series of units that are identical except for the engine mass and displacement. 3.13 Grass Trimmer: A unit using flexible nonmetallic line(s), string(s), or similar nonmetallic cutting means, such as pivoting blades, intended to cut vegetation. (See Figure 2(b).) 3.14 Hand Supported: A unit that during operation is supported and controlled by the user. A harness may aid in providing support. 3.15 Handle(s): A structure that enables the operator to hold and control the unit during operation. 3.16 Harness: Adjustable strap(s) by which the unit is suspended from the operator, which may or may not include a waist belt. a) Single Harness: The weight of the unit is distributed through one strap to the operator. b) Double Harness: Two straps that distribute the load of the unit over both shoulders of the operator. 3.17 May: Indicates a permissive condition. 3.18 Muffler: Device for reducing engine exhaust noise and directing the flow of the exhaust gases. 3.19 Operating/Cutting Position: (See Figure 1.) NOTE This standard does not specify the operating/cutting position. The dimensions provided are based on the operator position shown in Figure 1. Should the operating position be on the opposite side as shown in Figure 1, the dimensions referred to would be reversed. 3.20 On/Off Stop Control: A control that allows the engine to run or stop. 3.21 Output Shaft: The shaft to which the cutting attachment is connected. 3.22 Output Shaft Maximum Speed: The speed of the output shaft when the engine is operating at 133% of maximum power speed or at wide open throttle speed, whichever is less. The term “maximum s
