McCulloch M4620 Chainsaw User Manual


 
8
Tighten
chain
Adjusting Wheel
Loosen
chain
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!
TIGHTEN
5. Pushleveronbarknobdowntoreturnle-
ver to closed/locked position.
WARNING: Failure to push lever on
bar knob down to closed/locked position
could result in serious personal injury or
damage to your chain saw.
6. Useascrewdriver tomovechainaround
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
1
/
4
turn (upward direc-
tion). Retighten bar knob.
8. If chainis too loose, it willsag belowthe
guidebar.D ONOToperatet hesawifthe
chain is loose.
WARNING: If the saw is operated
with a loose chain, the chain could jump off
the guide bar andresult in serious injury.
WARNING:M ufflerisvery h otduring
andafter use. Donot touchthe muffler oral-
low combustible material such as dry grass
or fuel to doso.
OPERATING YOUR UNIT
BEFORE STARTING ENGINE
WARNING: Be sure to read the f uel
informationinthesafetyrulesbeforeyoube-
gin.Ifyoudonotunderstandthesafetyrules,
do not at tempt to fuel your unit. Con tact 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 oilwill quickly ruinthe bar and
chain. Too little oil will cause overheating
shownb ysmokecomingfromthechainand/
or discoloration of thebar.
OnlyuseBarandChainOilforbarandchain
lubrication.
OilCap
Fuel mix cap
FUELING ENGINE
WARNING: Removefuel capslowly
when refueling.
This engine is certified to o perate on u nleaded
gasoline. Before operation, gasoline 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 mixing 0,125
liter o foilwith5litersofunleadedgasoline. DO
NOT USE automotive or boat oil. These oils
will cause engine damage. When mixing fuel
follow the instructions printed o n thecontainer .
Alwaysreadandfollow thesafety rulesrelating
to fuel before fueling your unit.
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.Ac idicgascandam agethefuelsys-
tem of an engine while in storage. To avoid
engine pr o blems, emptythe fuelsystembe-
fore storage for 30days orlonger. Drainthe
gas tank, start the engine and let it run until
the f uellines andcarburetor areempty.Use
freshfuel ne xt season. Never use en gineor
carburetor cleaner products in the fuel tank
or permanent damage mayoccur.