A professional who repairs and maintains portable saws powered by internal combustion engines, following manufacturer's repair manuals and using handtools.

• Disassembles engine and replaces defective parts, such as piston rings, bearings, and timing mechanism.
• Cleans or replaces fuel lines and adjusts carburetors.
• Replaces broken links in chain saw or installs new chain.
• Replaces rotary or reciprocating blades in other saws as indicated.