John Deere PA01186 CS71 - Manual (Page 10)

10 English
9. Replace the clutch cover (C) and install the two (2) bar nuts
(B). Tighten the bar nuts finger tight only, see Illustration (R).
The bar must be free to move for tension adjustment.
NOTE: If the clutch cover does not slide on freely, check
that the chain brake is not engaged. To disengage chain
brake with clutch cover removed, grasp clutch cover as
shown in Illustration (S) and pull back on chain brake
lever / hand guard.
10. Remove all slack from chain by turning the chain tensioning
screw (G) clockwise, assuring that the chain seats into the bar
groove during tensioning.
11. Lift the tip of the guide bar up to check for sag, see
illustration (T). Release the tip of the guide bar, and turn
the chain tensioning screw (G) 1/2 turn clockwise. Repeat
this process until sag (U) does not exist.
12. Hold the tip of the guide bar up and tighten the bar nuts
securely as shown in Illustration (V).
13. Chain is correctly tensioned when there is no slack on the
underside of the guide bar, the chain is snug, but it can be
turned by hand without binding, see Illustration (W). En-
sure that the chain brake is not set.
NOTE: If chain is too tight, it will not rotate. Loosen bar
nuts slightly and turn adjusting screw 1/4 turn coun-
terclockwise. Lift the tip of the guide bar up and
retighten bar nuts.
ASSEMBLY
WARNING
Check the chain tension frequently when operating the
chain saw. Never touch or adjust the chain while the
motor is running. The saw chain is very sharp, always
wear protective gloves when performing maintenance to
the chain.
R
T
C
B
S
U
V
W
- +
G