TB 032 - Chain Saw Flashcards
Safety equipment shall be used at all times:
1. ________
2. ________
3. ________
4. ________________
- Gloves
- Goggles
- Helmet
- Turnout coat or brush jacket
If an electrical hazard is suspected or exists, ________ gloves shall be used
Gauntlet
Bags for gauntlet gloves are generally ______ onto chain bar scabbards
Sewn
________ gloves should accompany the chain saw to all work areas.
Gauntlet
Chainsaw:
Although equipped with a _________ clutch, the chain of a chain saw at idle speed may continue to spin
Centrifugal
When cutting, the operator should strive to be positioned to keep the ______ out of line with the body
Chain
Chainsaw:
There are two ways that a chain brake is engaged: _________ and _________
Manual
Automatic
________ engagement most often occurs when the chain saw kicks back
Automatic
Automatic engagement occurs very quickly and the brake engages within ____ of a second
1/10
Some chain saws are equipped with an _________ operated chain brake that engages whenever a violent movement of the chain saw occurs
Inertia
Never use the chain brake hand guard as a ________ handle
Carrying
DO NOT operate a chain saw at speeds above ______ when the chain brake is engaged or engine damage may result
Idle
cutting is an operation involving a minimum of __ members
2
The primary responsibility of the safety person is to:
1. ______ the operator of changing or unsafe conditions
2. ______ injury
3. ______ the operator who is backing up while involved in cutting operations.
- Alert
- Prevent
- Assist
Since a running chain saw creates a serious communication problem, the safety member will have to use gestures or “______ language” to communicate effectively
Body
An effective way for the safety member to remain in contact with the operator is to use an ___________ grip on an axe scabbard belt, B/A frame/webbing
UNDERHANDED
Refueling of chain saws shall be done in a well ventilated area. NEVER refuel chain saws _______ or in ______
Indoors
Quarters
Unlike other power tools, the chain saw can be used to “______ or ______” rafters or joists
Feel
Read
The length of cut (A) should not exceed the reach of the ____________ tool (B)
Ventilation
trade “space for time” will allow the hole to be completed ________ the fire travels to the work area
Before
Pull starter cord JUST ENOUGH to engage starter pawls. Crank engine smartly with ________ pulls
Short
If the engine fires but does not continue to run, push choke in ______ way
Half
When the engine runs, disengage choke, squeeze and __________ the throttle trigger immediately
Release
Warm the chain saw prior to cutting by bringing ______ up to peak speed and then allowing them to drop off. Repeat this process several times
RPM’s
Do not operate chain saws at continuous full RPM without a “______” on the chain
Load
Do not attempt to start chain saw with chain ________ engaged
Brake
Pump manual ______ several times to insure chain lubrication if the chain saw is so equipped
Oiler
If the chain saw will not start, check the following: On/off switch and _______ - off/disconnected
Wiring
Flooded cylinder - Pull starter cord __ to __ times
4 to 5
An advantage of the chain saw is the operator’s ability to “______” the work
Feel
When used to locate structural members, the chain saw should be held in an upright position, ___________ to the roof’s surface
Perpendicular
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°
Safe depth of cut will depend on four factors:
1. Type of _________
2. Thickness of ______ covering
3. Thickness of ________
4. Intended _________
Construction
Roof
Decking
Operations
During lengthy operations it may become necessary to ________ the chain saw, add chain lubricating oil, and adjust chain ________
Refuel
Tension
Gasoline spilled onto a hot __________ pipe will cause the fuel to vaporize quickly, creating an extreme hazard
Exhaust
Clean all ________ away from the fuel cap before opening.
Debris
Manual oilers should be depressed a minimum of once every ___ seconds under light conditions
10
Saws with automatic oilers should be adjusted for ________ oiling
Maximum
Chain Tension Adjustment: during extended operations, check every ______ minutes
Few
After use:
1. Wipe off debris. Pay particular attention to the ____ cleaner cover, ______ cap, and _____ cap.
Air
Fuel
Oil
After use:
2. Check condition of ______
Chain
After Use:
3. Remove heavy ____ deposits from the chain bar and body of the chain saw using solvent if carried on the apparatus.
Tar
Do not use __________ as a cleaning solvent.
Gasoline
Cuts into rock covered composition roofs should be started after clearing su fficient rock (s) or starting the hole using a __________ ______
Pickheaded Axe
replace the chain when:
1. Missing/damaged tips on __ or more cutters in a row
3
replace the chain when:
2. Missing /damaged tips on __ or more cutters at random.
6
replace the chain when:
3. Cracked/broken _____ ______
Tie Straps
replace the chain when:
4. _____ chain
Dull
Dull chains should be replaced when a ________ on the cutting edge is visible to the naked eye.
Radius
During extended cutting operations, check chain tension every few ________
Minutes
Since ______ is the primary factor causing the chain to loosen, the chain will contract when allowed to cool
Heat
Do not run chain saw at full RPM without load for more than a few ________ or engine damage may result
Seconds
Monthly Checks - Remove ______ ______. Check gap and condition. Clean, regap or replace if necessary.
Spark plug
Petroleum based solvents, including kerosene, used to clean tar from chain saw parts shall not be applied in __________ form.
Atomized
Still 038 Magnum - ___ cubic inch engine
4.4
Still 038 Magnum - ___ kilowatt of power developed at ______ RPM
3.5
9,000
Still 038 Magnum - ____ horsepower
4.69
Still 038 Magnum - idles between _____ RPM & _____ RPM
2,400 & 2,600
Still 038 Magnum - clutch engages at _____ RPM
3,000
Still 038 Magnum - latch throttle position develops ______ RPM
7,000
Still 038 Magnum - fully automatic ______ lubrication
Chain
Still 038 Magnum - __ stroke piston ported engine
2
Still 038 Magnum - weight ___ lbs
19
Chain lubrication is regulated by am oil quantity control bolt, The control should always be turned fully in the _____ (__) maximum feed direction
Plus (+)
if your truck company does not have a second chain saw, remember to place the _______ cutting blade on the _______ saw and notify company personnel
Wood
Rotary
note the position of the guide bar and ______ it when reassembling
Invert
place the ignition switch to “____” for the cleaning process.
Off
___________ air or ______ sprayers shall not be used to apply petro-based solvents
Compressed
Hand
Inspect chain sprocket for grooves exceeding _____” in depth
1/16”
List of recommended spare parts - 6. ______ Screws: METRIC
Five
Dicing would require cuts no longer than a member can reach with an ____ or _____ ____
Axe
Chain Saw
The length of the chain saw from tip to handle is comparable to a __________ axe of average length
pickheaded
Chainsaw:
Proper chain tension is extremely important to the life of the guide bar and chain. Tension must be checked ________, ________, and _______ use.
Before
During
After
Avoid injury by using _______ or _______ _____ to protect hand when making adjustments or pulling chain through its travel
Gloves
Wiping rag
Hot chains that have been adjusted during extended operations must be __________ to allow contraction as the chain saw cools
Loosened
There are three important functions than must be performed prior to disassembling the chain saw. First, if your truck company does not have a second chain saw, remember to place the wood cutting blade on the rotary saw and notify company personnel. Next, note the position of the guide bar and invert it when reassembling. Finally, place the ignition switch to “off” for the cleaning process
.
