Before Starting Engine; Operating Your Unit - McCulloch M4620 Manual De Instrucciones

Adjusting
Bar knob
wheel
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.
1. Lift lever on bar knob and turn counter-
clockwise 1 ½ - - 2 turns to loosen clutch
cover.
2. Turn adjusting wheel (downward direc-
tion) to tension chain until chain solidly
contacts bottom of guide bar rail. Lift tip
of guide bar while adjusting tension.
Tighten
chain
Adjusting Wheel

BEFORE STARTING ENGINE

WARNING
: Be sure to read the fuel
information in the safety rules before you be-
gin. If you do not understand the safety rules,
do not attempt to fuel your unit. Contact an
authorized service dealer.
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. Only use Bar and
Chain Oil for bar and chain lubrication.
Guide bar
Screwdriver
LOOSEN
Loosen
chain

OPERATING YOUR UNIT

3. Use a screwdriver to move chain around
guide bar to ensure all links are in bar
groove.
4. While lifting tip of guide bar, tighten bar
knob securely (clockwise). Hand tight-
en only!
5. Push lever on bar knob down to return le-
ver to closed/locked position.
WARNING
bar knob down to closed/locked position
could result in serious personal injury or
damage to your chain saw.
6. Use a screwdriver to move chain around
guide bar.
7. If chain does not rotate, it is too tight.
Loosen bar knob 1 turn (counterclock-
wise); then, loosen chain by turning the
adjusting wheel
tion). Retighten bar knob.
8. If chain is too loose, it will sag below the
guide bar. DO NOT operate the saw if the
chain is loose.
WARNING
with a loose chain, the chain could jump off
the guide bar and result in serious injury.
WARNING
and after use. Do not touch the muffler or al-
low combustible material such as dry grass
or fuel to do so.
Oil Cap
FUELING ENGINE
WARNING
when refueling.
This engine is certified to operate on un-
leaded petrol. Before operation, petrol must
be mixed with a good quality 2- -cycle air- -
cooled engine oil designed to be mixed at a
ratio of 40:1. A 40:1 ratio is obtained by mix-
8
TIGHTEN
: Failure to push lever on
1
/ turn (upward direc-
4
: If the saw is operated
: Muffler is very hot during
Fuel mix cap
: Remove fuel cap slowly