Logging eTool: Parts of a Saw

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	Occupational Safety & Health Administration
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	Parts of a Chain Saw


	Typical parts of a chain saw are identified in the following picture. OSHA REQUIRES that the chain saw have the parts identified in bold text. [1910.266(e)(1) and (e)(2)] Chain saws placed into service after February 9, 1995 must also meet the requirements of ANSI B175.1-1991, Safety Requirements for Gasoline Powered Chain Saws.

Part of a Chain Saw

1	Chain catcher to prevent a broken or dislodged chain from striking the logger.
2	Flywheel
3	Clutch
4	Decompression valve
5/7	Anti-vibration handle system is recommended by OSHA to limit ergonomic stress to the logger's joints.
6	Hand guard
8	Muffler to reduce engine noise.
9	Chain brake to stop the chain if kickback occurs, if the saw was placed into service after February 9, 1995.
10	Throttle which will stop the chain when pressure on the throttle is released.
11	Throttle interlock which prevents the throttle from activating until the interlock is depressed.

Click for Safety Checklist: Chainsaw section

Additional Part of a Chain Saw information:

OSHA Logging Standard

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