603GC OPERATOR’S MANUAL
P/N 518538 Jul 06
© 2006 ICS, Blount Inc.
SAFETY
IMPORTANT
THE FOLLOWING SYMBOL APPLIES TO ALL ITEMS LISTED ON THIS PAGE
A potential situation exists which, if not avoided, may result in
product or property damage.
Note: The saw is equipped with a two-stroke engine and must always be run using a mixture
of gasoline and ICS two-stroke engine oil (25:1). It’s important to accurately measure the
amount of oil to be mixed to ensure that correct mixture is obtained. When mixing small
amounts of fuel, even small inaccuracies can drastically affect the ratio of the mixture.
• Use high quality, unleaded gasoline with a minimum octane rating of 90. If lower octane
gasoline is used, engine temperature will increase which will result in a piston seizure.
• Fuel mixture: 25:1 gasoline/oil mixture. Incorrect fuel mixture will cause piston seizure.
• Use ICS
®
brand two-stroke engine oil, or other high quality 2-stroke oil that has been
formulated for air cooled power equipment.
• Never use two-stroke oil formulated for water-cooled two-cycle engines, such as
outboard motor oil.
• Never use motor oil intended for four-stroke engines.
ENGINE BREAK-IN
• It is very important to break-in a new engine to “seat” all moving parts, especially the
piston rings.
• To break-in the engine, run one full tank of 25:1 fuel at idle, cycling the throttle every
5 to 10 minutes to prevent loading.
• Failure to break-in an engine may result in piston seizure.
Summary of Contents for 603GC
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