MAINTENANCE
CHAIN MAINTENANCE
See Figures 32 - 33.
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.
Use only 3/8 in. pitch skip
For smooth and fast cutting, chain needs to be maintained properly. The chain requires sharpening when the wood chips are small and powdery, the chain must be forced through the wood during cutting, or the chain cuts to one side. During maintenance of your chain, consider the following:
nImproper filing angle of the side plate can increase the risk of a severe kickback.
nRaker (depth gauge) clearance.
nToo low increases the potential for kickback.
nNot low enough decreases cutting ability.
nIf cutter teeth have hit hard objects such as nails and stones, or have been abraded by mud or sand on the wood, have service dealer sharpen chain.
NOTE: Inspect the drive sprocket for wear or damage when replacing the chain. If signs of wear or damage are present in the areas indicated, have the drive sprocket replaced by a Ryobi Service dealer.
HOW TO SHARPEN THE CUTTERS
See Figures 34 - 35.
Be careful to file all cutters to the specified angles and to the same length, as fast cutting can be obtained only when all cutters are uniform.
WARNING:
Improper chain sharpening increases the potential of kickback.
nWear gloves for protection. Properly tension the chain prior to sharpening. Refer to “Adjusting Chain Tension” earlier in this manual. Do all of your filing at the
nUse a 5/32 in. diameter round file and holder.
nKeep the file level with the top plate of the tooth. Do not let the file dip or rock.
nUsing light but firm pressure, stroke towards the front corner of the tooth.
nLift file away from the steel on each return stroke.
nPut a few firm strokes on every tooth. File all left hand cutters in one direction. Then move to the other side and file the right hand cutters in the opposite direction. Oc- casionally remove filings from the file with a wire brush.
CUTTING |
|
CORNER |
|
TOP PLATE | SIDE PLATE |
RIVET HOLE | DEPTH GAUGE |
| |
HEEL | TOE |
| |
GULLET | Fig. 32 |
| |
CHECK FOR WEAR |
|
OR DAMAGE |
|
Fig. 33
Fig. 34
LEFT HAND
CUTTERS
RIGHT HAND |
|
CUTTERS | Fig. 35 |
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