3.5 SX Outboard Owners Guide
Item #8950
Store your fuel in a tightly sealed container (metal or suitable
plastic, NOT GLASS). Model fuel is poisonous and flammable.
Keep it away from heat, flames, and the reach of children.
Never use propellers with nicks, scratches or cracks. Always
use the correct size propeller for your engine.
Keep your hands a safe distance from the propeller at all times.
Keep all loose articles (pencils, eyeglasses, etc.) out of shirt
pockets, as they may fall out while adjusting your engine. Long
hair, neckties, loose shirt sleeves and clothing, etc. must be
kept away from the prop.
YOUR ENGINE IS NOT A TOY! It is a precision piece of ma-
chinery and must be treated as such.
If you are in doubt about anything, it is best to call our factory.
Asking your hobby dealer or an experienced modeler for assis-
tance may be helpful, but may not provide the correct information.
REMEMBER: SAFE OPERATION OF
YOUR MODEL AND ENGINE IS YOUR
RESPONSIBILITY!
PLEASE READ ALL SAFETY INSTRUCTIONS!
Failure to read, understand and follow these instructions could
result in personal injury and/or property damage to yourself or
others.
Do not attempt to run your model before completely checking
out your installation.
Engines produce heat when running. Be careful as parts of the
engine may cause burns even after the engine is stopped prior
to cooling off.
Never run your engine in an enclosed area. Engines produce
dangerous exhaust gases and must be run outdoors only.
In case of difficulty, the safest and easiest way to stop the
engine is to pinch off the fuel line or remove it from the carbure-
tor. Never throw anything into the propeller (rags, etc.) to stop
the engine.
Never clamp your engine in a vice to test run. Mount your en-
gine securely on your boat. Never use wood screws to mount
your engine. Use good quality machine screws and nuts.
Thank You for selecting the finest American Made engine available. With simple care and
common sense your engine will provide you years of trouble free service. This product does
require mechanical ability and know-how to operate. You must be the judge of your own ability. YOU are the person who will
control your model and engine in a safe manner and must assume all responsibility for your activity.
NOTICE! READ THIS!
IT IS NORMAL FOR THERE TO BE A TIGHT SPOT WHILE TURNING OVER THE ENGINE. THIS IS EXPLAINED FURTHER IN THIS MANUAL.
THE FOLL
THE FOLL
THE FOLL
THE FOLL
THE FOLLO
O
O
O
OWING
WING
WING
WING
WING WILL RESUL
WILL RESUL
WILL RESUL
WILL RESUL
WILL RESULT IN D
T IN D
T IN D
T IN D
T IN DAMA
AMA
AMA
AMA
AMAGE
GE
GE
GE
GE T
T
T
T
TO
O
O
O
O THE ENGINE
THE ENGINE
THE ENGINE
THE ENGINE
THE ENGINE
WHICH
WHICH
WHICH
WHICH
WHICH WILL NO
WILL NO
WILL NO
WILL NO
WILL NOT BE CO
T BE CO
T BE CO
T BE CO
T BE COVERED UNDER
VERED UNDER
VERED UNDER
VERED UNDER
VERED UNDER W
W
W
W
WARRANTY
ARRANTY
ARRANTY
ARRANTY
ARRANTY.....
RUNNING THE ENGINE OUT OF THE WATER AT HIGH RPM’s OR FOR EXTENDED PERIODS OF TIME.
When the engine is not
in the water there is no load on the prop so the engine can over rev. This will cause the connecting rod to break or stretch and break at a later date. Since
there is no load on the engine it will run at a higher RPM’s with less fuel and in turn less oil, this will not supply the rod bearing enough oil and will result
in breakage. Be careful. Only run your engine at low rpm’s while it is out of the water. Perform carburetor adjustments after running your engine in the
water. The only way to obtain the correct carburetor settings is to have the correct load on the prop.
IF YOU FLIP YOUR BOAT OR CAUSE THE ENGINE TO INGEST WATER WHILE IT IS RUNNING.
This will cause the connecting
rod to break or stretch and break at a later date. This is caused by the piston trying to compress the ingested water which will not compress in turn placing
extreme loads on the connecting rod. This condition can also be caused by fuel flooding the engine and trying to spin it with an electric starter.
DO NOT RUN YOUR ENGINE AT AN EXTREMELY RICH SETTING.
An ABC engine needs to come up to temperature and running it at an
extremely rich setting for a period of time will cause premature wear on the piston as well as the rod to stretch and break. This is because the cylinder
is too cold and the piston is forced into the taper and sticks and is then pulled back down with the connecting rod. The normal warm up period will not hurt
the engine but trying to run it very rich will because of the accumulative effect of 15,000 rpm’s or 15,000 sticks and pulls of the rod per minute. The
damage may not be apparent initially but the rod may break in the future seemingly for no apparent reason.
DO NOT TRY TO BREAK YOUR ENGINE IN BY SPINNING IT WITH AN ELECTRIC STARTER OR DRILL MOTOR.
This is the
worst thing to do. You cause the same problems as running it too rich but even worse. By doing this the cylinder isn’t even close to the correct
temperature and there is no combustion to help the piston back down the stroke. So by doing this you are forcing the piston into the taper and then pulling
it back down with the connecting rod. Connecting rods are designed to take force in one direction only and doing this will cause the rod to stretch and
break as well as premature wear on the piston. The damage may not be apparent initially but the rod may break in the future seemingly for no apparent
reason.
THE ABOVE IS TRUE WITH ALL ENGINES, NOT JUST K&B, SO BE AWARE OF WHAT YOU ARE DOING AND THE
POSSIBLE CONSEQUENCES OF NOT FOLLOWING THESE INSTRUCTIONS.
