Check to see that the engine, if a gasoline engine driven machine, is properly filled with gasoline and oil. (See gasoline engine instructions).

SETTING THE CHAIN FOR SHARPENING

After the chain has been removed from the chain saw, lay it into groove as shown in Figures 2 and 3, after lever A has been pushed down, thus opening the vise. Allow lever A to come up, thus clamping the chain in the vise. Be sure the teeth are pointed in the direction shown in Fig. 3.

Adjust the tension on spring S until the table and chain lift easily but stay down when the hands are removed. Keep safety stop in position shown in Fig. 4, when adjusting and removing chains. When ready to grind, flip the safety stop towards the operator to allow chain to be lifted up to the wheel.

ADJUSTMENT FOR HOOK ANGLE

Adjust hook angle by loosening wing nut, Fig. 4, on bolt B and rocking table to proper angle. This angle is indicated at C, Fig. 3, and is generally 5, 10, or 15 degrees. If unknown, it may be determined by adjusting until the grinding wheel fits to the unsharpened tooth.

The various face angles are obtained by rotating the turn table to different positions and the angles are shown by indicator D, Fig. 4. These angles should be determined from the chain before sharpening. They may vary between 0 and 35 degrees.

The amount to be ground off the teeth is then adjusted by turning knob E until the proper amount is ground off to sharpen the tooth. Before making this adjustment, be sure the tooth is located properly in the vise. To do this, loosen vise by pressing down lever A with the right wrist, push the tooth locator into place with right thumb, Fig. 6, and pull tooth up against locator, MAKING SURE THAT TOOTH IS DOWN ON ITS TRACK. Do not start to lift table until tooth locator

is out of way of grinding wheel.

An extra tooth locator is furnished with each machine. In case of accident this may be easily replaced by loosening the tooth locator locking screw, Fig. 4. This screw is deeply recessed, but can be easily loosened with the small Allen wrench furnished with each machine.

The depth of cut (into the tooth throat) is set by adjusting screw F.

SHARPENING THE SAW

Sharpen only one type of tooth as you go around the chain. When the vise is released by right wrist, the left hand can easily and quickly render the chain to the next tooth of same type. Grind off only enough to give the tooth a good cutting edge. Use the index finger of the left hand to assure yourself that chain is down on its track.

This operation is very fast. With a little practice, you can sharpen a chain in a very few minutes. REMEMBER, it is much better to sharpen your chain frequently, removing only a little metal each time, than to wait longer and have to remove much more from a badly worn tooth. Also, no chain saw will work well with a dull chain. A dull chain is inefficient and wears fast.

GRINDING THE TOPS OF THE TEETH

Frequently it becomes advisable to grind the tops of the teeth due to wear of top cutting edge. If this is done, the life of the chain will be greatly increased due to removing the necessity of grinding off large amounts from tooth face to get a good cutting edge.

Remove both grinding wheels and put the wide one in place of the narrow one. Suitable spacers and collars are provided. Set the turn table to 5 degrees on the left indicator as shown in Fig. 7. Loosen the wing nut that locks the tilt table and rock the tilt table until the top of the tooth is parallel to the face of the grinding wheel. Tighten nut.

Loosen screw G and slide spindle on the two parallel bars until the curvature of the wheel, as seen from the side, fits the top of angle of tooth being ground. Lock in place.

This will vary the tension of the drive belt. It may be brought into proper tension by adjusting the two knobs under the motor. When adjusting these, work them together, not allowing one to get ahead of the other and cause binding.

Set the depth of cut screw F, Fig. 4, so that when the chain is brought up against the wheel, the top of the tooth will just clean up the worn part.

Grind all of one type of tooth at one setting, being careful to bring the table up against the stop with the same tension each time. Readjust for each type of tooth.

In grinding the rakers (center teeth), remove enough metal so that they are about 1/32 inch lower than side cutters. Care should be exercised to make all of each kind of teeth the same height.

Remove the chain saw sharpener turntable by loosening knob below and install circular saw turntable in its place. Fig. 8. Set face angle indicator D at 0 degrees so as to get a square face on the teeth.

Adjust the height of the saw support spindle J so that the top of the saw protrudes about 1/2" above the top of support castings. Remove front handle, washer, spring and cone. Assemble saw in place with the teeth pointed in the direction shown, centering cone in saw hole.

With grinding wheel stopped, adjust knob E until the face angle of the unground tooth fits the contour or outline of the grinding wheel. The depth that the wheel goes into the saw is adjusted by screw F. Set tooth stop H as shown in Fig. 9, locating on the tooth next to the one being ground. Rotate the saw in the reverse to cutting direction as you sharpen, always locating on an unsharpened tooth.

With your left hand, hold the saw tooth firmly against the tooth stop as the next tooth is being ground. Follow all the way around in this manner, until you are ready to grind the last tooth where you have no unground tooth on which to locate. In this case, do not pull locating tooth quite up to the tooth stop H, but simply hold the saw to properly grind last tooth by eye.

The cone in the saw center serves to keep it centered and the spring holds it in place.

A special gumming wheel can be furnished to shape out the tooth throats when necessary.

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