Husqvarna 142 - Manual (Page 8)

8
Chain Brake Nuts
Chain Adjustment
Tool (Bar Tool)
Guide
Bar
Adjusting the tension:
Chain tension is very important. Chain
stretches during use. This is especially true
during the first few times you use your saw.
Always check chain tension each time you
use and refuel your saw.
You can adjust the chain tension by loosen-
ing the chain brake nuts and turning the ad-
justing screw 1/4 of a turn while lifting up on
the bar.
S
If chain is too tight, turn adjusting screw 1/4
turn counterclockwise.
S If chain is too loose, turn adjusting screw
1/4 turn clockwise.
Adjusting
Screw
Chain Brake Nuts
Guide Bar
Adjusting Screw -- 1/4 Turn
S Lift up the tip of the bar and tighten the
chain brake nuts with the combination
screwdriver/wrench.
S Recheck chain tension.
Chain Brake
Nuts
WARNING:
If the saw is operated
with a loose chain, the chain could jump off
the guide bar and result in serious injury.
FUELING & LUBRICATION
FUELING ENGINE
WARNING:
Remove fuel cap slowly
when refueling.
This engine is certified to operate on
unleaded gasoline. Before operation,
gasoline should be mixed with a good quality
synthetic 2-cycle air-cooled engine oil
designed to be mixed at a ratio of 40:1. (A
40:1 ratio is obtained by mixing 3.2 ounces of
oil with 1 gallon of unleaded gasoline). DO
NOT USE automotive or boat oil. These oils
will cause engine damage. When mixing fuel
follow the instructions printed on the
container. Always read and follow the safety
rules listed under HANDLE FUEL WITH
CAUTION.
BAR AND CHAIN LUBRICATION
The bar and chain require continuous lubri-
cation. Lubrication is provided by the auto-
matic oiler system when the oil tank is kept
filled. Lack of oil will quickly ruin the bar and
chain. Too little oil will cause overheating
shown by smoke coming from the chain and/
or discoloration of the bar.
In freezing weather oil will thicken, making it
necessary to thin bar and chain oil with a small
amount (5 to 10%) of #1 Diesel Fuel or kero-
sene. Bar and chain oil must be free flowing for
the oil system to pump enough oil for adequate
lubrication.
Genuine Husqvarna® bar and chain oil is rec-
ommended to protect your unit against exces-
sive wear from heat and friction. Husqvarna®
oil resists high temperature thinning.
If Husqvarna® bar oil is not available, use a
good grade SAE 30 oil.
S
Never use waste oil for bar and chain lu-
brication.
S Always stop the engine before removing
the oil cap.
IMPORTANT
Experience indicates that alcohol--blended
fuels (called gasohol or using ethanol or
methanol) can attract moisture which leads
to separation and formation of acids during
storage. Acidic gas can damage the fuel
system of an engine while in storage. To
avoid engine problems, the fuel system
should be emptied before storage for 30
days or longer. Drain the gas tank, start the
engine and let it run until the fuel lines and
carburetor are empty. Use fresh fuel next
season. See STORAGE section for addi-
tional information.