Setting The Saw Chain - Echo CS-4010 Operator's Manual

MAINTENANCE
• Start engine, turn Idle speed adjustment screw "T" CW until the saw
chain begins to move, then turn screw out CCW until the saw chain
stops moving. Turn screw out, CCW, an additional 1/4 turn.
When carburetor adjustment is completed, the saw chain
should not move at idle, otherwise serious personal injury can
result.
6. Accelerate to full throttle for two to three seconds to clear any excess
fuel in the engine, then return to idle. Accelerate engine to full throttle to
check for smooth transition from idle to high speed. If engine hesitates
turn "L" needle CCW 1/8 turn and repeat acceleration. Continue
adjustment until smooth acceleration results.
7. Check idle speed and reset if necessary as described in item 5. If a
tachometer is available idle speed should be set to value listed on
specifications page.
When starting, idling adjustment speed should be adjusted to
prevent the saw chain from moving. When you experience
trouble with the carburetor, contact your dealer.

Setting the Saw Chain

Drive Link
Tie Strap
Right Hand Cutter
Important points for proper maintenance of saw chain:
• Keep the cutters sharp at all times.
• Keep the left and the right cutters properly aligned.
• Note that blunt or irregular cutters will result in poor cutting performance,
increased vibration of chains and premature breakage of the saw chain.
50
Preset Tie Strap
Left Hand Cutter
Guard
Link
CS-4010
Top Plate
Side Plate
Depth
Gauge
X7503380000
7/22 ECHO Incorporated