MAINTENANCE Chain Maintenance Use only Dual Raker low-kickback chain on this saw. This fast- cutting chain will provide kickback reduction when properly maintained. For smooth and fast cutting, Raker chain needs to be main- tained 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: 1. Improper filing angle of the side plate can increase the risk of a severe kickback. 2. Raker (depth gauge) clearance ( A ): Too low increases the potential for kickback; not low enough decreases cutting ability. 3.
If cutter teeth have hit hard objects such as nails and stones, or have been abraded by mud or sand on the wood, have servicing dealer sharpen chain. NOTE: Inspect the rim sprocket for wear or damage when replacing the chain. If signs of wear or damage are present in the areas indicated in illustration ( B ), have the rim sprocket re- placed by a John Deere Servicing Dealer. 1. Tighten the chain tension enough that the chain does not wobble. Do all of your filing at the mid-point of the bar. Wear gloves for protection. 2. Use a 7/32" diameter round file and holder. 3. Keep the file level with the top plate of the tooth as shown in Illustration ( C ). Do not let the file dip or rock. 4.
Using light but firm pressure, stroke towards the front corner of the tooth as shown in Illustration ( D ). Lift file away from the steel on each return stroke. 5 Put a few firm strokes on every tooth. File all left hand cutters ( E ) in one direction. Then move to the other side and file the right hand cutters ( F ) in the opposite direction. Occasionally remove filings from the file with a wire brush. C A D E F F E B How to Sharpen the Cutters 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 Dull or improperly sharpened chain can cause exces- sive engine speed during cutting which may result in severe engine damage. Cutting Corner Top Plate Side Plate Rivet Hole Depth Gauge WARNING Improper chain sharpening increases the potential of kickback. Toe Gullet Heel Failure to replace or repair damaged chain can cause serious injury. Parts of a Cutter The saw chain is very sharp, always wear protective gloves when performing maintenance to the chain. 20 English