Stihl MS 261 Instruction Manual page 14

English
Misaligned, Damaged or Broken Cap
WARNING
￭
A B
1
2
￭ If the cap does not drop fully into the fuel tank opening
when the positioning marks (1, 2) line up, or if it does not
tighten properly when turned, the base of the cap may be
prematurely rotated in relation to the top. Such
misalignment can result from handling, cleaning or an
improper attempt at tightening.
– Illustrations A and B: The base of the cap is prematurely
rotated to the closed position and is not in the correct
starting position for installation. The tank will not seal in
this configuration. Note: in Illustrations A and B, the
interior positioning marks (1) are in line with the exterior
positioning marks (2).
– Illustration C: The bottom of the cap is in the correct
starting position for installation. Note: in Illustration C,
the interior positioning mark (1) is under the grip and not
in line with the outer positioning mark (2).
12
C
1
1
2
2
5 IMPORTANT SAFETY INSTRUCTIONS
￭
A B
￭ To return the base of the cap to the proper starting
position for installation:
– Drop the cap into the fuel tank opening (A).
– Turn the cap counter-clockwise with slight pressure
until it drops fully into the fuel tank opening
(approx. 1/4 turn) (B). This will rotate the base of the
cap into the correct starting position for
installation (C). The exterior positioning mark (1) on
the cap will line up with the "unlocked" symbol on the
fuel tank housing. The interior positioning mark (3)
should be under the grip and not in line with the outer
positioning mark (1).
– Then, turn the cap clockwise, closing it normally.
￭ If your fuel cap still does not tighten properly, it may be
damaged or broken. Stop using the unit and take it to your
authorized STIHL dealer for repair.
Vapor Lock
WARNING
￭ Vapor lock occurs when fuel in the fuel line or carburetor
vaporizes, causing bubbles to block the free flow of liquid
fuel into the carburetor.
￭ Vapor lock cannot be relieved or affected by opening the
fuel tank. Removing the fuel filler cap without first allowing
the chain saw to cool adequately can result in fuel
spraying. Always follow the instructions in this section
when removing the fuel cap.
C
1
2
0458-573-8621-C