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14 X7503207802
© 08/2013 ECHO Inc.
DESCRIPTION CS-303T
1. Chain Brake Lever/Front hand guard - Guard between the front handle and the saw chain for
protecting the hand from injuries and aiding in control of the chain saw if the hand slips off the handle.
2. Air cleaner cover - Covers air cleaner.
3. Guide bar - The part that supports and guides the saw chain.
4. Tip guard - Anti-kickback device attached to the bar nose.
5. Saw chain - Chain, serving as a cutting tool.
6. Chain tension adjuster - Device to adjust chain tension.
7. 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.
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. Muffler Cover - Cover the muffler to protect operator from hot surface of muffler.
10. Safety Lanyard - If working off the ground the operator must be trained in safe climbing techniques and
use of all recommended safety equipment.
11. Control lever (choke/ignition switch) - Device for connecting and disconnecting the ignition system
and allowing the engine to be started or stopped. Lever also activates choke.
12. Throttle trigger lockout - A safety lever which must be depressed before the throttle trigger can be
activated. Prevents accidental operation of the throttle trigger.
13. Throttle lock button - Device for temporality setting the throttle in a partially open position to aid
starting.
14. Front support handle (for the left hand) - Support handle located at the front of the engine housing.
15. 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.
16. Throttle control handle (for the right hand) - Handle located above the engine housing.
17. Spark plug - Provides spark to ignite fuel mixture.
18. Oil tank cap - For closing the oil tank.
19. 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.
20. Fuel tank cap - For closing the fuel tank.
21. Choke control knob - Device for enriching the fuel/air mixture in the carburetor to aid cold starting. Also
activates fast idle throttle latch.
22. Purge pump - When starting engine, push purge pump 3 or 4 times.
CHAIN SAW TERMS
1. Fast Idle -Throttle setting that causes engine to operate at a faster speed for easier starting.
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.