Evolution-engines 62GXI User Manual download pdf (Page 11)

Engine Break-in

Your new engine needs to be broken-in to ensure a long life of all the components. This engine

features a piston ring design, which requires a speciﬁc break-in procedure to ensure a tight seal

between the piston ring and liner. For this to be accomplished, this process requires repeated

heating and cooling cycles. The ring needs to seat itself with the cylinder walls for it to develop

a good seal.

Important considerations during break-in

• Perform the break-in process with the engine

mounted on your airplane. There is no need

to bench-run the engine prior to mounting it

on your airplane.

• Use a lightly loaded break-in prop to begin

your break-in process (22 x 10 or 23 x 9).

This provides less load and high RPM that,

when matched with the heat of the engine,

will break in the engine properly. We do NOT

recommend using a 24 x 10 propeller during

the ﬁrst gallon of fuel, as this propeller is

highly loaded and would put undue stress

on the engine during break-in.

• Use the proper recommended fuel with a

32:1 gas to oil ratio for the ﬁrst gallon of

operation.

Break-in process

• First tank of fuel: Run the engine on the

ground for its ﬁrst tank of fuel and DO NOT

go above half throttle. Cycle the throttle

between idle and half throttle every minute.

• Second tank of fuel: Do not run at full

throttle on the ground for more than 30

seconds at a time. Fly the airplane and avoid

extended periods of heating the engine. Be

sure to mix-in some cool-down dives and

lower-throttle ﬂying.

• Third tank of fuel: Fly the engine at high

throttle setting for extended periods of time.

This will help the piston ring and cylinder to

expand and contract, helping the breaking-

in process.

• Fourth tank of fuel: Select one of the

recommended propellers for normal

operation and mount it on your engine.

Continue to break-in the engine in ﬂight.

Fly the airplane through the ﬁrst gallon of fuel,

then you can change the fuel mixture to 40:1

for continued operation.

Engine Fuel Injection System in Operation

The 62 GXI features an adaptive algorithm that will “learn” the best settings for your

environment and ﬂying conditions every time you run the engine. When the engine is shipped

from the factory, it is loaded with base settings that will enable you to run the engine in any

environment. As the engine runs, the adaptive algorithm ﬁne-tunes the settings for your

environment. Every time you power off the EFI, it resets back to the default settings.

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Evolution-engines 62GXI User Manual Page 11

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