TB 32 Chain Saw Flashcards
TB 32 Chain Saw
The following safety equipment shall be used in conjunction with chain saw operations at all times:
- Gloves
- Goggles
- Helmet
- Turnout coat or brush jacket
If an electrical hazard is suspected or exists, gauntlet gloves shall be used. Bags for gauntlet gloves are generally sewn onto chain bar scabbards. Gauntlet gloves should accompany the chain saw to ail work areas.
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TB 32 Chain Saw
When cutting, the operator should strive to be positioned to keep the chain out of line with the body.
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TB 32 Chain Saw
There are two
ways that a chain brake is engaged: manual and automatic.
Members can manually engage a chain brake by pushing the hand guard forward with the left hand.
Automatic engagement most often occurs when the chain saw kicks back, causing the left hand to
strike the hand guard. This occurs very quickly and the brake engages within ___ of a second.
Some chain saws are equipped with an inertia operated chain brake that engages whenever a violent movement of the chain saw occurs.
1/10
TB 32 Chain Saw
Never use the chain brake hand guard as a carrying handle.
DO NOT operate a chain saw at speeds above idle when the chain brake is engaged or engine damage may result.
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TB 32 Chain Saw
An effective way for the safety member to remain in contact with the operator is to use an UNDERHANDED grip on an axe scabbard belt, B/A frame/webbing, etc.
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TB 32 Chain Saw
Refueling of chain saws shall be done in a well ventilated area. NEVER refuel chain saws indoors or in quarters.
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TB 32 Chain Saw
Warm the chain saw prior to cutting by bringing RPM’s up to peak speed and then allowing them to drop off. Repeat this process several times.
CAUTION
Do not operate chain saws at continuous full RPM without a “load” on the chain.
Do not attempt to start chain saw with chain brake engaged.
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TB 32 Chain Saw
Flooded cylinder - use following procedure:
a. Place on/off switch in “off” position
b. Push in choke - ensure that the choke is not engaged
c. Pull starter cord 4 to 5 times
d. Turn switch “on”. Use normal starting procedure.
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TB 32 Chain Saw
When used to
locate structural members, the chain saw should be held in an upright position, perpendicular to the roof’s surface.
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TB 32 Chain Saw
Once the structural members (rafters, joists, etc.) have been located, the chain saw may be lowered to approximately ____ to the cutting surface for continued cutting.
45 degrees
TB 32 Chain Saw
Safe depth of cut will depend on four factors:
- Type of construction
- Thickness of roof covering
- Thickness of decking
- Intended operations
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TB 32 Chain Saw
Saws with
automatic oilers should be adjusted for maximum oiling. Manual oilers should be depressed a minimum of once every ___ seconds under light conditions. When used under extreme conditions (several layers of roofing material), manual oilers should be depressed more often.
10
TB 32 Chain Saw
If carbide tips become damaged, it will be necessary to replace the chain when:
- Missing/damaged tips on 3 or more cutters in a row.
- Missing /damaged tips on 6 or more cutters at random.
- Cracked/broken tie straps
- Dull chain
TB 32 Chain Saw
Tension is correct when the chain travels freely around the bar as it is pulled by hand and the bottoms of all tie straps and cutters touch the underside of the bar rails.
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TB 32 Chain Saw
Daily Checks
- Check fuel level. Add mixed fuel if necessary.
- Check lubricating oil level. Add if necessary.
- Check chain condition, tension, and proper direction of travel.
- Check controls for proper starting position.
- Check carrying strap and hooks for condition.
- Check gauntlet gloves for proper location and condition.
- Make a visual check of tile chain saw for loose fasteners and/or covers.
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