Evolution Engines EVOE33GX - Manual (Page 14)

EN
14
33GX Evolution Engines Specifications
Disp Bore (mm) Stroke (mm) Weight (oz) Cylinder Propeller
33cc 37.5 29.5 48.8 Ringed 18 x 8 @ 8300 rpm
A
C D
F
H
G
70mm
54mm
B
E = height* F = length G= crankshaft thread size H = muffler bolt spacing
Weight (oz)
Engine Only Muffler Ignition Total
38.8 5.8 3.6 48.8
Dimensions
(mm)
A B C D E* F G H
50 60 31 73.3 104 121 3/8–24 36.5
* Height is from engine C/L to top of cylinder head.
Troubleshooting Guide
If the Engine Does Not Start
• Check and use a new spark plug if needed.
• Check fuel lines.
• Check for proper mechanical function by turning
the engine over.
• Check that the carburetor is correctly installed.
• Check that the vent line is attached and free
from any bends or blockages.
If the engine runs erratic
• Check for fuel systems problems. Are there any
holes in the fuel lines (inluding the clunk line
inside the fuel tank) or other possible sources
of air leaks, such as a loose fuel filter?
• Ensure the spark system is working
properly and the ignition battery is charged.
Mechanical Faults
If the engine cannot be turned over easily:
• The most likely cause is the engine is flooded
and by turning the engine over you are trying to
compress the fuel, not air.
1. Remove the spark plug.
2. Cover the cylinder head with a cloth or paper
towel and turn the propeller over to expel all
the excess fuel.
3. Replace the spark plug and try starting again.
• A possible cause is the piston in the cylinder is
seized: loosen and unscrew the cylinder head
bolts.
1. Carefully remove the cylinder liner.
2. Visually examine the piston and cylinder
to find the possible cause of the engine’s
mechanical problem.
Mechanical repairs must ALWAYS be completed by
an authorized Horizon Hobby service center.
Maintenance
After each flying session:
1. Fully drain the fuel from the tank.
2. Start the engine and run it until the fuel is
completely run out of the engine.
3. Try starting the engine three more times or until
it will no longer fire. This gets all the fuel out of
the engine.
If you need additional help or have any questions,
please call Horizon’s Support Team. Horizon has
trained technicians who are qualified to answer
your engine questions.