Ryobi RY3818 Manual Del Operador página 28

 Lift the tip of the guide bar up to check for sag.
 Release the tip of the guide bar and turn the
chain tensioning screw 1/2 turn clockwise.
Repeat this process until sag does not exist.
 Hold the tip of the guide bar up and tighten the
bar mounting nuts securely.
The chain is correctly tensioned when there is no
sag on the underside of the guide bar, the chain is
snug, but it can be turned by hand without binding.
Ensure that the chain brake is not set.
NOTE: If chain is too tight, it will not rotate. Loosen
the bar nuts slightly and turn the tension adjuster
1/4 turn counterclockwise. Lift the tip of the guide
bar up and retighten the bar nuts securely. Ensure
that the chain will rotate without binding.
ADJUSTING THE CHAIN TENSION
See Figures 41 - 43.
WARNING:
Shut off engine, wait for all moving parts to
stop, and disconnect spark plug wire and move
it away from spark plug. Never touch or adjust
the chain while the engine is running. The saw
chain is very sharp. Always wear protective
gloves when performing maintenance on the
chain. Failure to follow these instructions can
result in serious personal injury.
 Stop the engine before setting the chain tension.
 Make sure the bar mounting nuts are loosened
to finger tight.
 Turn the chain tensioning screw clockwise to
tension the chain.
NOTE: A cold chain is correctly tensioned when
there is no slack on the underside of the guide
bar, the chain is snug, and it can be turned by
hand without binding.
 Retension the chain whenever the flats on the
tie straps hang out of the bar groove.
NOTE: During normal saw operation, the tem-
perature of the chain increases. The tie straps
of a correctly tensioned warm chain will hang
approximately .050 in. out of the bar groove.
The tip of the combination wrench can be used
MAINTENANCE
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Page 28 — English
FLATS ON TIE STRAPS
. 050 IN. (1.25 MM)
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Fig. 38
Fig. 39
Fig. 40
Fig. 41
Fig. 42
.050 (1.25 MM)
Fig. 43