(1) TB 32- Chainsaw Flashcards

1
Q

What are the two ways a chain brake is engaged?

A
  1. Automatic (inertia)
  2. Manual
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2
Q

An automatic engagement of the hand brake happens how fast?

A

1/10th of a second

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3
Q

A cutting operation requires how many members minimum?

A

2 - the operator and safety person.

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4
Q

Is it ok to fuel a chainsaw indoors or in quarters?

A

No

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5
Q

The length of a cut with a chainsaw should not exceed the reach of what?

A

The ventilation tool (rubbish hook vs pick head axe)

(However, the length of cut will strongly depend on the ventilation technique being used.)

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6
Q

When trying to de-flood a chainsaw, place the on/off switch to “off”. Should you then engage or disengage the choke? And then pull the starter cord how many times?

A
  1. Disengage
  2. 4-5 times
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7
Q

When used to locate structural members, the chain saw should be held in an upright position, perpendicular to the roof’s surface.

Once the structural members (rafters, joists, etc.) have been located, the chain saw may be lowered to approximately ___ degrees to the cutting surface for continued cutting.

A

45 degrees

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8
Q

Can you fuel a hot chainsaw?

A

Yes, with extreme caution

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9
Q

Can you use gasoline as a cleaning solvent?

A

No

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10
Q

Once you have started cutting on a rock covered composition roof, is it necessary to clear rocks before advancing the chainsaw?

A

No, only when the first cut is made

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11
Q

If carbide tips become damaged, replace the chain when:
1. Missing/damaged tips on ___ or more cutters in a row.
2. Missing /damaged tips on ___ or more cutters at random.
3. ?
4. ?

A
  1. 3
  2. 6
  3. Broken tie straps
  4. Dull chain
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12
Q

Making a visual check of entire chain saw for loose fasteners and/or covers is a daily, weekly or monthly check?

A

Daily

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13
Q

Checking the operation of the chain brake is a daily, weekly or monthly check?

A

Weekly

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14
Q

Inspecting the starter cord for fraying and contamination and security of starter cord handle is a daily, weekly or monthly check?

A

Weekly

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15
Q

Checking the condition of the spark plug is a daily, weekly or monthly check?

A

Monthly

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16
Q

Inspecting the engine case and fuel lines is a daily, weekly or monthly check?

A

Monthly

17
Q

Checking the air filter housing is a daily, weekly or monthly check?

A

Monthly

18
Q

Particular cleaning attention should be paid to where on the chainsaw if soiled with molten tar?

A

Cylinder and head cooling fins

(Failure to clean all molten tar and debris from cylinder and head fins WILL result in overheating. Premature piston/cylinder assembly failure will result if this condition persists.)

19
Q

Can water be used to clean molten tar off a chainsaw?

A

No

20
Q

Petroleum based solvents, including kerosene, used to clean tar from chain saw parts shall not be applied in _______ form.

A

Atomized (spray form)

21
Q

Place the ignition switch to _____ for the cleaning process of the chainsaw.

A

Off

22
Q

If a chain is still in satisfactory condition after cleaning, soak it in ______ before replacing.

A

Engine oil

23
Q

When disassembling the chainsaw, inspect the chain sprocket for grooves exceeding _______ inch(es) in depth. Notify _____ if replacement is necessary.

A
  1. 1/16th
  2. The shops
24
Q

Chainsaw:

To start the chainsaw, Pull starter cord JUST ENOUGH to engage the ______

A

starter pawls

25
Q

What is the proper way to warm up a chainsaw prior to cutting?

A

by bringing RPM’s up to peak speed and then allowing them to drop off. Repeat this process several times

26
Q

The safe depth of cut with a chainsaw will depend on what four factors?

A

-Type of construction
-Thickness of roof covering
-Thickness of decking
-Intended operations

27
Q

What are the 4 items of PPE’s that shall be worn when operating a chainsaw?

A
  1. Helmet
  2. Gloves
  3. Googles
  4. TO coat or brush jacket

If an electrical hazard is suspected or exists, gauntlet gloves shall be used. Gauntlet gloves should accompany the chain saw to ail work areas.

28
Q

During extended cutting operations, check chain tension every _____ minutes.

A

Few

29
Q

Since a running chain saw creates a serious communication problem, the safety member will have to use gestures or “body language” to communicate effectively.

The safety member must maintain contact with the operator at all times. 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, etc.

A

UNDERHANDED

30
Q

The primary responsibility of the safety person is to:

A
  1. Alert the operator of changing or unsafe conditions
  2. Prevent injury.
  3. Assist the operator who is backing up while involved in cutting operations.