LT Study Guide Unifire Chainsaws

Question 1

1) Do not use the saw until sufficient ____ has reached the chain

Answer 1

a. Chain oil

Question 2

2) The saw is equipped with a ____ valve that will ____ return to its original setting after starting

Answer 2

a. Decompression, automatically

Question 3

3) Never start the saw engine without the ___, ___, and ____ assembled

Answer 3

a. Bar, chain, clutch cover

Question 4

4) Starting – use ___ hand to grip front handle, hold saw down with ____ in rear handle, and use ____ to pull the starter handle

Answer 4

a. Left, right foot, right hand

Question 5

5) Lowest recommended octane is ___, when working at continuous high revs a ____ octane is recommended

Answer 5

a. 87, higher

Question 6

6) For best results use ___ two stroke oil specially developed for _____ mixing ratio is ____

Answer 6

a. HUSQVARNA, chain saws, 1:50 (2%)

Question 7

7) Never use oil intended for water cooled ____ or so called _____

Answer 7

a. Outboard engines, outboard oil

Question 8

8) Never use oil intended for ___ engines

Answer 8

a. Four stroke

Question 9

9) When mixing oil start by filling ___ the gasoline first then add the entire amount of ___ then mix, then add remaining fuel

Answer 9

a. Half, oil,

Question 10

10) ____ the fuel mixture thoroughly before filling the saws fuel tank

Answer 10

a. Mix (shake)

Question 11

11) Do not mix more than the max ___ supply of fuel

Answer 11

a. One months

Question 12

12) If the saw is not used for ___ the fuel tank should be emptied and cleaned

Answer 12

a. Sometime

Question 13

13) The chain lubrication is ____, never use ____, in some temps below ___ degrees C some oils become to ___

Answer 13

a. Automatic, waste oil, 0 degrees C, viscous

Question 14

14) Change the ___ at least once a year

Answer 14

a. Fuel filter

Question 15

15) The volume of ___ and ___ tanks are adjusted to each other, therefor always fill both at the same time

Answer 15

a. Chain oil, fuel

Question 16

16) When fitting a ____ the chain tension has to be checked frequently until it is ___, and then check the ____ on a regular basis

Answer 16

a. New chain, run-in, tension

Question 17

17) The oil pump is ____ by using a _____ or a _____

Answer 17

a. Adjustable, screwdriver, combination spanner

Question 18

18) Turning the crew ____ with reduce the oil flow, turning the screw ____ will increase the oil flow.

Answer 18

a. Clockwise, counterclockwise

Question 19

19) Recommended settings for oil- bar size __ = 1 turn from closed, ___= 2 turns, ____= 3 turns, ___ = 4 turns

Answer 19

a. 15”, 15-18”, 18-24”, 24”

Question 20

20) Air filter must be cleaned ___ unless air is exceptionally dirty then should be cleaned ___ or ___

Answer 20

a. Regularly, daily or more often

Question 21

21) Clean the air filter by ___ or ____ it, a more thorough cleaning of the filter is obtained by washing it with ___ and ____

Answer 21

a. Brushing, shaking, soap, water

Question 22

22) The spark plug condition is influenced by –

Answer 22

a. Incorrect carburetor setting
b. Wrong fuel mix (to much oil in gasoline)
c. Dirty air filter

Question 23

23) If the engine is ____, ____, or ____ always check the spark plug first

Answer 23

a. Low on power, difficult to start, runs poorly at idle speed

Question 24

24) Correct electrode gap for the spark plug is ___, spark plug should be changed after about a ___ in operation or earlier if electrodes badly eroded

Answer 24

a. 0,5MM (0,020”), month

Question 25

25) After your unit has run __-__ tanks of fuel the engine has ____

Answer 25

a. 8-10, broken in

Question 26

26) The setting of the carburetor means the engine is adapted to local conditions for example –(4)

Answer 26

a. Climate, altitude, fuel, and the type of 2 stroke oil

Question 27

27) The carburetor has 3 adjustment possibilities-

Answer 27

a. L: Low speed jet
b. H:High speed jet
c. T: adjustment screw for idling

Question 28

28) Turning the L and H screws clockwise creates a ____ ratio, turning it counterclockwise creates a ___ ratio

Answer 28

a. Leaner(less fuel), Richer (more fuel)

Question 29

29) A leaner mix gives a ___ engine speed, a richer mix gives a ___ engine speed

Answer 29

a. Higher, lower

Question 30

30) If the T screw is turned _____ this gives a higher idle, ______ a lower idle speed

Answer 30

a. Clockwise, counter clockwise

Question 31

31) When the saw has been ___ the carburetor should be finely adjusted by a ____, first adjust the ___, then the ____, and then the ___

Answer 31

a. Run-in, qualified person, L-jet, T-screw, H-jet

Question 32

32) The high speed needle H is correctly set when the saw ____ a little, if the saw ____ the setting is to lean.

Answer 32

a. 4-cycles, whistles

Question 33

33) If there is to much ____ at the time the saw “4-cycles” much the setting is to rich, but for an optimum setting contact a qualified servicing dealer who has a _____ at his disposal

Answer 33

a. Exhaust gas, revolution counter

Question 34

34) A correctly adjusted carb means that the saw ___ without hesitation, 4-cyles a little at ___, the chain must not rotate at ____.

Answer 34

a. Accelerates, max speed, idle

Question 35

35) A too lean adjusted low speed needle L may cause _____ and _____

Answer 35

a. Starting difficulties and bad acceleration

Question 36

36) To lean adjusted high speed needle H gives _____, _____, and/or ____

Answer 36

a. Lower power-less capacity, bad acceleration, damage to the engine

Question 37

37) A to rich adjustment of the two speed needles Land H gives ____ problems or ____

Answer 37

a. Acceleration, too low working speed

Question 38

38) The bar should be turned ___ for more even wear

Answer 38

a. Daily

Question 39

39) Use ____ or comparable on all bolts and nuts on the depth gauge

Answer 39

a. Loctite 272

Question 40

40) ____ tension may decrease somewhat with extensive use

Answer 40

a. Spring

Question 41

41) ____ tension must be monitored during use

Answer 41

a. Chain

Question 42

42) To start a cut position the saw at a ___ degree angle

Answer 42

30