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1.Chain Brake Lever/Front hand guard - Locks and unlocks the chain brake to stop or allow saw chain rotation. Guard between the front handle and the saw chain helps protect the hand from injuries if the hand slips off the handle.
2.Spark arrestor muffler or spark arrestor muffler with catalyst - The muffler or catalytic muffler controls exhaust noise and emission. The spark arrestor screen prevents hot, glowing particles of carbon from leaving the muffler. Keep exhaust area clear of flammable debris.
3.Saw chain - Chain, serving as a cutting tool.
4.Guide bar - The part that supports and guides the saw chain.
5.Spiked bumper - Device, fitted in front of the guide bar mounting point, acting as a pivot when in contact with a tree or log.
6.Chain catcher - A projection designed to reduce the risk of the operator’s right hand from being hit by a chain which has broken or derailed from the guide bar during cutting.
7.Chain tension adjuster - Device to adjust chain tension.
8.Chain Brake/Sprocket Guard - Protective cover for the chain brake, guide bar, saw chain, clutch, and sprocket when the chain saw is in use.
9.Rear hand guard - Extension on the lower part of the rear handle for protecting the hand from the chain if it breaks or degrooves.
10.Choke control knob - Device for enriching the fuel/air mixture in the carburetor to aid cold starting. Also activates fast idle throttle latch.
11.Purge pump - When starting engine, push purge pump 3 or 4 times.
12.Air cleaner cover - Covers air filter.
13.Cleaner cover knob - Device for installing the air cleaner cover.
14.Spark plug - Provides spark to ignite fuel mixture.
15.Ignition switch - Device for connecting and disconnecting the ignition system and thus allowing the engine to be started or stopped.
16.Throttle trigger lockout - A safety lever which must be depressed before the throttle trigger can be activated. Prevents accidental operation of the throttle trigger.
17.Rear handle (for the right hand) - Support handle located towards the rear of the engine housing.
18.Throttle trigger - Device activated by the operator’s finger, for controlling the engine speed. Also releases fast idle throttle latch when squeezed and released immediately after starting engine.
19.Fuel tank cap - For sealing the fuel tank.
20.Starter handle - Pull handle slowly until starter engages then quickly and firmly. When engine starts, return handle slowly. DO NOT let handle snap back or damage to unit will occur.
21.Oil tank cap - For sealing the oil tank.
22.Front handle (for the left hand) - Support handle located at the front of the engine housing.
23.Cylinder cover - The cooling airflow grill. It covers the cylinder, spark plug and silencer.
CHAIN SAW TERMS
1.Fast Idle
2.Throttle Latch - Device that sets idle speed to fast idle when choke control is operated.
3.Chain Brake - Stops the saw chain.
4.Drive Sprocket - Drives saw chain.
5.Clutch - Turns drive sprocket when engine rpm is fast enough to provide the power needed for cutting.
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© 01/2014 ECHO Inc.