NOTICE
■ The calibration process is aborted if the throt‐
tle trigger is released before the saw is prop‐
erly calibrated. It is then necessary to restart
the calibration process.
► Keep the throttle trigger fully depressed.
NOTICE
■ The chainsaw can be incorrectly calibrated if
the throttle trigger is not kept fully depressed
during calibration. This can damage the saw.
► Keep the throttle trigger fully depressed.
► Depress the throttle trigger for at least 30
seconds (B) and hold it in that position.
The engine accelerates and the chain rotates.
Calibration of the saw takes place. Engine
speed varies noticeably during calibration.
► If the engine stalls: Make another attempt to
calibrate the saw.
► If the engine keeps stalling:
► Engage the chain brake.
► Do not use your chainsaw and contact your
STIHL servicing dealer for assistance.
Your saw has a malfunction.
► As soon as the engine speed drops noticeably
(C): Release the throttle trigger.
The engine runs at idling speed. Your saw is
calibrated and ready for operation.
11.4
Adjusting Oil Feed Rate
The chainsaw has an adjustable oil pump.
0000-GXX-3165-A0
A
1
2
The oil feed rate is suitable for most applications
when the oil pump adjusting screw (1) is in posi‐
tion E (Ematic).
The oil pump feed rate can be adjusted to suit
different bar lengths, wood species and working
techniques. The range of adjustment of the oil
pump adjusting screw (1) is limited by a stop (2).
The stop (2) can be depressed in order to further
increase the oil feed rate.
To increase oil feed rate
► Shut off the engine and engage the chain
brake.
► Turn the oil pump adjusting screw (1) clock‐
wise.
To increase oil feed rate still further
► Shut off the engine and engage the chain
brake.
► Use a suitable tool to depress the stop (2).
The stop (2) remains permanently depressed.
NOTICE
■ The oil tank will be drained at a faster rate if
the oil pump adjusting screw (1) is in the ‘A’
segment. The point where the saw chain is no
longer being lubricated properly will be
reached sooner.
► Fill the oil tank to maximum.
► Move the oil pump adjusting screw away
from the ‘A’ segment when the increased oil
flow rate is no longer required.
► Turn the oil pump adjusting screw (1) clock‐
wise.
To reduce oil feed rate
► Shut off the engine and engage the chain
brake.
► Turn the oil pump adjusting screw (1) counter‐
clockwise.
11.5
Holding and Controlling the
Chainsaw
0000-GXX-2948-A1
► Hold and control your chainsaw with your left
hand on the handlebar and your right hand on
the control handle. Wrap thumb of left hand
around the handlebar and thumb of right hand
around the control handle.
English
11 Operating the Saw
18
0458-759-0121-D. VA0.A21.
Summary of Contents for MS 661 C-M
Page 1: ...STIHL MS 661 C M Instruction Manual 2 30...
Page 30: ...English 23 EC Declaration of Conformity 30 0458 759 0121 D VA0 A21...
Page 31: ...23 EC Declaration of Conformity English 0458 759 0121 D VA0 A21 31...
Page 32: ...www stihl com 04587590121D 04587590121D 0458 759 0121 D 0458 759 0121 D...