ADJUSTMENTS
WARNING:
Before performing any adjustment, make sure the tool is unplugged from the power supply. Failure to heed this warning could result in serious personal injury.
ADJUSTING CHAIN TENSION
See Figures 24 - 26.
nUnplug the chain saw and remove power cord.
nLoosen the guide bar nut to finger tight, turn the chain tensioner knob “+” will tension the chain. Refer to “Re- placing Bar and Chain” later in this manual for additional information.
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.
nChain must be
nDuring normal saw operation, the temperature of the chain will increase. The drive links of a correctly tensioned warm chain will hang approximately .050 in. out of the bar groove.
NOTE: New chain tends to stretch, check chain tension frequently and tension as required.
nRetighten the guide bar nut.
CAUTION:
Chain tensioned while warm, may be too tight upon cooling. Check the “cold tension” before next use.
GUIDE BAR
NUT
CHAIN
TENSIONING
KNOB
| TO |
TO | LOOSEN |
| |
TIGHTEN (+) | Fig. 24 |
APPROX. .050 (1.25 mm) | Fig. 25 |
| |
FLATS |
|
| Fig. 26 |
MAINTENANCE
WARNING:
When servicing, use only identical Ryobi replacement parts. Use of any other parts may create a hazard or cause product damage.
WARNING:
Always wear safety goggles or safety glasses with side shields during power tool operation or when blowing dust. If operation is dusty, also wear a dust mask.
GENERAL MAINTENANCE
Avoid using solvents when cleaning plastic parts. Most plastics are susceptible to damage from various types of commercial solvents and may be damaged by their use. Use clean cloths to remove dirt, dust, oil, grease, etc.
WARNING:
Do not at any time let brake fluids, gasoline, petroleum- based products, penetrating oils, etc., come in contact with plastic parts. Chemicals can damage, weaken or destroy plastic which may result in serious personal injury.
Electric tools used on fiberglass material, wallboard, spackling compounds, or plaster are subject to accelerated wear and possible premature failure because the fiberglass chips and grindings are highly abrasive to bearings, brushes, commu- tators, etc. Consequently, we do not recommended using this tool for extended work on these types of materials. However, if you do work with any of these materials, it is extremely
important to clean the tool using compressed air.
LUBRICATION
All of the bearings in this tool are lubricated with a sufficient amount of high grade lubricant for the life of the unit under normal operating conditions. Therefore, no further lubrica-
tion is required.
21