ISO 8437-4:2019/FDAmd 1

ISO 8437-4:2019/AmdFDAmd 1:2022(E)
ISO/TC 23/SC 13
Secretariat: ANSI
Date: 2026-01-09
Snow throwers – — Safety requirements and test procedures – —
Part 4:
Additional national and regional requirements
Amendment AMENDMENT 1:
Chasse-neige — Exigences de sécurité et essais —
Partie 4: Exigences nationales et régionales additionnelles
AMENDEMENT 1
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ISO 8437-4:2019 amd1:2022(E/FDAmd 1(en)
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ISO 8437-4:2019 amd1:2022(E/FDAmd 1(en)
Foreword
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This document was prepared by Technical Committee ISO/TC 23, Tractors and machinery for agriculture and
forestry, Subcommittee SC 13, Powered lawn and garden equipment, in collaboration with the European
Committee for Standardization (CEN) Technical Committee CEN/TC 144, Tractors and machinery for
agriculture and forestry, in accordance with the Agreement on technical cooperation between ISO and CEN
(Vienna Agreement).
"This document is intended to be used in conjunction with ISO 8437-1, ISO 8437-2 and ISO 8437-3".
A list of all parts in the ISO 8437 series can be found on the ISO website.
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ISO 8437-4:2019 amd1:2022(E/FDAmd 1(en)
Snow throwers – — Safety requirements and test procedures – —
Part 4:
Additional national and regional requirements Amendment
AMENDMENT 1
Scope, first paragraph
Replace paragraph with the following:
This document provides additional national and regional requirements applicable to combustion engine
powered pedestrian-controlled and ride-on snow throwers.

5.1, Table 3
Replace the Subclausefollowing rows of ISO 8437-2:2019, 4.2.2.5 rowTable 3 with the following:
4.2.2.5 4.2.2.5  Engine speed
The snow thrower shall be designed in such a way that it is not possible to sustain an
engine speed greater than the maximum operating engine speed as specified by the
manufacturer, by the use of anyusing a control or by making simple adjustments
4.3.1 All fixed guards on the snow thrower must be secured using fastening systems
that can only be opened or removed with tools. These fastening systems must
remain attached either to the guard itself or to the snow thrower when the guard
is removed. Where feasible, guards should be designed so they cannot remain in
position unless properly fastened.
Compliance shall be checked by inspection.

6.1, Table 5
Replace the Subclausefollowing rows of ISO 8437-3:2019, 4.2.2.6 rowTable 5 with the following:
4.2.2.6 4.2.2.6  Engine speed
The snow thrower shall be designed in such a way that it is not possible to sustain an
engine speed greater than the maximum operating engine speed as specified by the
manufacturer, by the use of any control or by making simple adjustments
4.3.1 All fixed guards on the snow thrower must be secured using fastening systems
that can only be opened or removed with tools. These fastening systems must
remain attached either to the guard itself or to the s
...