10
ENGINE BREAK-IN
It is critical that you properly break-in your SS .21. Proper break-
in will help ensure optimal fi t between critical engine components
and help prevent premature wear. Proper break-in will help obtain
maximum performance.
• It is recommended to NOT run the body on your vehicle during
break-in.
• DO NOT run the engine at full throttle until the break-in procedure
is complete and the needles are set for your current conditions.
• We DO NOT recommend that you idle your engine on a starter
box for break-in.
• Do not allow the engine to run out of fuel during break-in. This will
cause the engine to lean out possibly causeing engine damage.
• We highly recommend the use of a quality temperature gauge like
the O’Donnell TGX1 (ODOP0900) to monitor engine temperature.
The high and low speed needles are preset at the factory. The
factory needle settings are a safe (rich) starting point.
Find a large, fl at, open area to perform the break-in procedure.
Make sure you are in an area where you will not disturb others or
have to worry about traffi c.
When leaning the engine during break-in, only
make adjustments of 1-hour increments. This will
help prevent over leaning the engine during break-
in and causing damage to your engine.
6
12
9
3
1 hour = 1/12 turn
Summary of Contents for SS .21
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