Echo CS-305, CS-306 Chainsaw User Manual


 
9
L
ADJUSTMENT, CHAIN TENSION
IMPORTANT
Always loosen guide bar nuts before turning chain
tension adjuster, otherwise clutch cover and tensioner
will be damaged.
1. Remove spark plug lead.
2. Loosen two guide bar nuts (I), if necessary.
3. Hold the bar nose up, and turn the adjuster screw (L)
clockwise until the chain touches the bottom of the
bar.
4. Tighten both guide bar nuts with bar nose held up.
IMPORTANT!
Tighten guide bar nuts to 90 – 110 kgf/cm (80 – 95
in. lbs.) DO NOT over-tighten nuts. Damage to saw
may result.
5. Pull the saw chain around the guide bar by hand.
Reduce chain tension, if you feel tight spots.
6. Keep chain properly tensioned at all times.
NOTE
All chains require frequent adjustments.
FUEL AND LUBRICANT
NOTICE: Use of unmixed, improperly mixed, or fuel older
than 90 days, (stale fuel), may cause hard starting, poor
performance, or severe engine damage and void the product
warranty. Read and follow instructions in the Storage section
of this manual.
FUEL STATEMENT
GASOLINE - Use 89 Octane [R+M/2] (mid grade or higher)
gasoline or gasohol known to be good quality. Gasohol may
contain up to 10% Ethyl (grain) alcohol or 15% MTBE (methyl
tertiary-butyl ether). Gasohol containing methyl (wood) alcohol
is NOT approved.
Two Stroke Oil - A two-stroke engine oil
meeting ISO-L-EGD (ISO/CD 13738) and
J.A.S.O. FC Standards must be used. Echo
brand premium Power Blend
TM
Universal 2-
Stroke Oil meets these standards. Engine
problems due to inadequate lubrication caused
by failure to use an ISO-L-EGD and J.A.S.O. FC
certified oil, such as Echo premium Power
Blend
TM
, will void the two-stroke engine warranty.
(Emission related parts only are covered for two
years, regardless of two-stroke oil used, per the
statement listed in the Emission Defect Warranty
Explanation.)