OPERATION
PRUNING & TRIMMING
1.Observe all safety precautions.
2.Use both hands. Keep a firm grip.
3.Be alert for kickback. Do not allow the tip of the bar to touch anything while the chain is in motion.
Figure 3. Crosscutting Logs/Limbs with
Pressure on Bottom
4.Pole chain saws must be hung securely in a vertical position to prevent dislodgement. Pole chain saws must not be hung on utility wires or cables and must not be left in the tree overnight. Pole chain saws must be hung so the sharp edge is away from the worker, if possible.
5.Warnings, when necessary, must be given by the worker in the tree before a limb is dropped. “Tim- ber” or “heads up” are common terms used for this purpose.
6.A separate line should be attached to limbs that can- not be dropped safely or are too heavy to be con- trolled by hand. The line should be held by work- ers on the ground end of the rope. Use of the same crotch for both the safety rope and the work rope should be avoided.
7.The safety line or climbing rope must not be used for any purpose but for climbing.
8.Cut branches must not be left in trees overnight.
TOPPING/LOWERING LIMBS
1.Observe all safety precautions.
2.Use both hands. Keep a firm grip.
3.Workers performing topping operations should make sure the trees are able to stand the strain of a topping procedure. If not, some other means of lowering the branches should be provided, such as a tree crane.
4.If large limbs are lowered in sections, the worker in the tree should be above the limb being lowered.
5.Guidelines, hand lines, or tag lines must be used when conditions warrant their use.
LIMBING AND BUCKING
1.Observe all safety precautions.
2.Use both hands. Keep a firm grip.
3.When it is possible to do so, the tree worker must work on the side opposite the side on which the limb is being cut.
4.Branches bent under tension must be considered hazardous.
COLD WEATHER OPERATION
If the pole chain saw is to be used during cold weather, preheat the hydraulic fluid at low engine speed. When using the normally recommended fluids, fluid should be at or above 50 °F/10 °C (400 ssu/82 centistokes) before use.
Damage to the hydraulic system or pole chain saw can result from use with fluid that is too viscous or thick.
Cutting frozen wood causes the cutters to wear, crack and break at the back rivet hole unless proper precau- tions are taken. To extend chain life when cutting in cold weather:
•Be sure the automatic oiler is working.
•Keep the chain tensioned and check often.
•Keep the chain properly sharpened. Touch up at least every hour. Never force a dull chain to cut.
•Clean out the bar groove and keep the oil hole open. Turn the bar over to equalize wear on the rails.
•Always install a new sprocket with a new chain.
CS25/28 User Manual ◄ 15
