Maintaining The Guide Bar; Maintenance Schedule - Ryobi OCS1825 Original Instructions Manual

■ A cold 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.
■ Chain must be re-tensioned whenever the flats on the
drive links hang out of the bar groove.
■ During normal saw operation, the temperature of
the chain will increase. The drive links of a correctly
tensioned warm chain will hang approximately 1.27 mm
(.050 in.) out of the bar groove.
NOTE: New chain tends to stretch, check chain tension
frequently and tension as required.
CAUTION
Chain tensioned while warm, may be too tight upon
cooling. Check the "cold tension" before next use.

MAINTAINING THE GUIDE BAR

See Fig.29-30.
CAUTION
Make sure the chain has stopped and the battery pack
has been removed before you do any work on the saw.
Proper maintenance will maximize the useful life of the
guide bar.
Each day of use:
■ Clean the bar and check for wear and damage.
Feathering or burring of the bar rails is a normal process
of bar wear, but such faults should be smoothed with a
file as soon as they occur.
Each week of use:
■ Lubricate the socket at the end of the guide bar using a
grease syringe in the lubricating hole.
■ Turn the guide bar and check that the lubrication holes
and chain groove are free from impurities.
A bar with any of the following faults should be
replaced immediately:
■ Wear inside the bar rails that permits the chain to lay
over sideways
■ Bent guide bar
■ Cracked or broken rails
■ Spread rails
Fig 27

MAINTENANCE SCHEDULE

Fig 28
Daily check
Bar lubrication
Chain tension
Chain sharpness
For damaged parts
For loose fasteners
INSPECT AND CLEAN:
Bar
Complete saw
Fig 29
Fig 30
Before each use
Before each use
and frequently
Before each use,
visual check
Before each use
Before each use
Before each use
After each use
15