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AO Study Material 2020 Test > TB 32 - Chainsaw > Flashcards

TB 32 - Chainsaw Flashcards

(77 cards)

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1
Q

What safety equipment shall be used in conjunction with chainsaw operations at all times?

A

Gloves
Goggles
Helmet
Turnout coat or brush jacket

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2
Q

When using the chainsaw of an electrical hazard is suspected or exists, what gloves shall be used?

A

Gauntlet gloves

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3
Q

What bags are generally sewn onto chain bar scabbard where gauntlet gloves should accompany the chainsaw to ail work areas?

A

Bags for gauntlet gloves

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4
Q

Although equipped with centrifugal clutch, the chainsaw at idle speed may continue to spin, turning the chainsaw in hand must be down with what?

A

Extreme caution

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5
Q

When cutting, the operator should strive to be positioned to keep the chain what with the body?

A

Out of line

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6
Q

The proper positioning of the chain saw and body could prevent injury from what?

A

Broken chain
Flying debris
Chainsaw kickback

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7
Q

What shall be worn by all members involved in cutting stations to avoid dislodging and throwing of objects?

A

Eye protection

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8
Q

What are 2 ways that a chain brake is engaged?

A

Manual and automatic

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9
Q

As a safety precaution, the operator shall use what when moving from place to place in the work area?

A

Manually engage chain brake by pushing hand guard forward

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10
Q

Automatic engagement most often occurs when the chainsaw does what?

A

Kick backs

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11
Q

During kick back, the chain brake engaged within what of a second?

A

1/10 of a second

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12
Q

Some chain saws are equipped with an inertia operated chain brake that engages whenever what movement occurs?

A

Violent movement

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13
Q

To release the chain brake, grasp the hand guard and carrying handle with what hand and squeeze together until hand guard contacts carrying handle?

A

Left hand

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14
Q

You should never use the chain brake hand guard as what?

A

A carrying handle

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15
Q

Do not operate a chainsaw at speeds above what when the chain brake is engaged or engine damage may result?

A

Idle

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16
Q

Cutting is an operation involving a minimum of how many members?

A

2 members

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17
Q

Since running a chainsaw creates a serious communication problem, the safety members will have to use what to communicate effectively?

A

Gestures or “body language”

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18
Q

The safety member must maintain what with the operator at all times?

A

Contact

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19
Q

An effective way for the safety member to remain in contact with the operator is to use a what grip on an axe scabbard belt, SCBA frame or webbing?

A

Underhand grip

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20
Q

Refueling chainsaws shall be done where and never indoors or in quarters?

A

Well ventilated area

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21
Q

Unlike other power tools, the chainsaw is an excellent tool when used for roof ventilation because it can be used to do what for rafters or joists?

A

“Feel or read”

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22
Q

Cutting techniques the ventilation team will use will depend on what?

A

Type of construction
Extent and extension of fire
Desired effect

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23
Q

Avoid making what kind of cuts because ventilation team may step within cut areas of roof when attempting to remove cut sheathing?

A

Excessively long cuts

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24
Q

Diving would require cuts no longer than what with an axe or chainsaw?

A

A member can reach

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25
Center rafter/louvering may require what kind of cuts?
Longer cuts
26
The length of the chainsaw from tip to handle is comparable to the average length of what?
Pickhead axe
27
The length of the cut should not exceed the reach of what?
Ventilation tool
28
Plan the ventilation hole so that the ventilation team is always working towards what?
Safe means of egress and/or away from fire
29
If you have determined that a defensive hole is necessary, remember to trade what?
“Space for time”
30
Trading “space for time” is a prime consideration when doing what kind of ventilation?
Strip cut
31
Warm the chainsaw prior to cutting by bringing RPMs up to peak speed and then allowing them to drop off, repeat this process how many times?
Several
32
Do not operate chainsaw at continuous full RPM without what on the chain?
A load
33
Saw that have reached proper operating temperature and must be restarted do not require what?
Choking
34
You should not attempt to start chainsaw with what engages?
Chain brake
35
If the chainsaw will not start, you should check what?
``` On/off switch and wiring Chock in proper position Fuel level Flooded cylinder Spark plug condition and gap ```
36
If chainsaw is flooded, place switch position to “off”, push in choke and pull the starter cord how many times before turning switch to “on” and using normal starting procedures?
4-5 times
37
When using chainsaw to “feel” and locate structural members, the chainsaw should be held in what position, perpendicular to roofs surface?
Upright
38
A perpendicular chainsaw causes increased number of what to contact structural members, causing more resistance to operator/saw improving the feel?
Chain teeth
39
Once the structural members have been located, the chainsaw may be lowered to approximately what degree to the cutting surface for continued cutting?
45 degrees
40
If additional structural members are encountered the chain saw can be utilized to what over the structural members?
“Roll”
41
When a structural member is encountered, the operator should lift the chainsaw how far out of the work and continue over the top of structural members before returning to same depth of cut?
Nearly out of the work
42
Safe what is a cut deep enough to accomplish intended ventilation operations without destroying the structural integrity of the roof?
Depth of cut
43
Safe depth of cut will depend on what 4 factors?
Type of construction Thickness of roof covering Thickness of decking Intended operation
44
Some ventilation methods on a panelists roof will require a deep cut to saw through what size joists?
2x4
45
It may be necessary to use the chainsaw for extended periods, during lengthy operation it may be necessary to do what to the chainsaw?
Refuel Add bar oil Adjust tension on chain
46
When fueling hot chainsaw use what?
Extreme caution
47
Clean all debris away from what before fueling?
Fuel cap
48
Chainsaws equipped with manual oilers should be depressed a minimum of once every how many seconds under light conditions?
10 seconds
49
When used under extreme conditions (several layers of roofing material), manual oilers should be depressed how often?
More often
50
For fueling the chainsaw, what mixture should be used?
Specified fuel mix
51
After use you should wipe off debris from what, check condition of what and remove heavy tar deposits from what?
Wipe off debris form air cleaner cover, fuel and oil cap Check condition of chain Remove tar from chain bar and body of saw with solvent
52
Do not use what as a solvent?
Gasoline
53
To dislodge foreign objects from filter, gently strike filter on what?
Palm of hand
54
If filter is torn or is excessively dirty, you should do what with the filter?
Replace filter
55
Carbide tipped chains used on this department are resistive to dulling but subject to what?
Chipping
56
Cuts into rock covered composition roofs should be started free sufficient clearing of rocks or starting hole using what?
Pickheaded axe
57
You should replace the chain when what happens?
Missing 3 or more cutters in a row Missing 6 cutters at random Cracked/broken tie straps Dull chain
58
Dull chains should be replaced when a what on the cutting edge is visible to the naked eye?
Radius
59
Chain tension must be checked when?
Before, during, and after use
60
During extended cutting operations, check chain tension how often?
Every few minutes
61
Roofs with heavy composition will do what to chains more rapidly than new roofs with light composition?
Heat chain
62
To adjust tension screw for chain, to tighten chain turn the screw in what direction?
Clockwise
63
Avoid injury by using what to protect hand when making adjustments or pulling chain through its travel?
Gloves or wiping rag
64
What is the primary factor causing chain to become loose?
Heat
65
What are the daily check of the chain saw (7)?
``` Fuel level Oil level Chain condition Proper starting position Check for loose fasteners and covers Carrying strap Gauntlet gloves ```
66
What are the weekly checks of the chainsaw (10)?
``` Daily checks Start chainsaw Depress manual oiler several times Run up RPM until warm Check chain for proper oiling Idle chainsaw with brake engaged Shut off engine allow to cool Check chain tension and adjust Inspect starter cord Top off fuel and bar oil ```
67
Do not run chainsaw at full RPM without a load for more than how many seconds or engine damage may result?
Few seconds
68
What are the monthly checks of a chainsaw (7)?
``` Daily checks Check spark plug condition Inspect engine case for cracks/leaks Inspect fuel assembly for cracks/leaks Change and replace fuel if not used for 30 days Check air cleaner for condition Inspect carburetor and linkage ```
69
The chainsaw should be cleaned after each use, particular attention should be paid to what if spiked with molten tar?
Cylinder and head fins
70
Petroleum based solvents such as kerosene used to clean tar from chain saw parts shall not be applied in what form?
Atomized form
71
Failure to clean molten tar and debris from cylinder and head fins will result in what?
Overheating
72
The chainsaw idled between what rpms?
2400 and 2600 rpm
73
The chain clutch engages at what rpm?
3,000 rpm
74
The latch throttle position develops at what rpm?
7,000 rpm
75
Chain sprocket grooves should not exceed how many inches in depth?
1/16”
76
When starting the chainsaw, pull the cord to start the chainsaw how far?
Just enough to engage the start paws
77
Inspect the chain sprocket for grooves exceeding how many inches in depth?
1/16”

AO Study Material 2020 Test (124 decks)

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