Evolution Engines 58GX - Manual (Page 4)

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If the engine does not start
- check and use a new spark plug if needed.
(Check the spark: put the plug into the cable end and by turning
the engine you´ll see the necessary spark. Note: The plug must
touch a metal part of the engine.)
- check fuel lines.
- check for proper mechanical function by turning the
engine over.
- check that the carburetor is correctly installed.
- remove the carburetor cover from the feed side; check
the filter and blow off carburetor with compressed air
( Caution: When using compressed air, use eye protection.);
when re-assembling be careful to maintain the proper order of
the components.
- check the vacuum feed line.
Mechanical Faults
If the engine can not be turned over easily
- a likely cause is the piston in the cylinder is seized: loosen and
unscrew the cylinder bolts.
- carefully remove the cylinder.
- visually examine the piston and crankcase to find the likely
cause of the engine’s mechanical problem.
Note: Mechanical repairs must always be completed by a
professional service department.
Trouble-Shooting Guide
Engine Specifications
Bore
Stroke
Displacement
Weight without ignition*
Weight of ignition unit
RPM range
38mm
38mm
45cc / 2.6 cu in
1290 g / 45.5 oz
165 g / 5.8 oz
1000–7500 rpm
Maximum power output**
Maximum torque**
Gasoline
Lubrication
5.2 hp / 6200 rpm
4.2 ft-lb / 6100 rpm
Unleaded 95-octane
Oil w/gasoline
in mixture 1:40
* The value in the table above stands for the weight of a completely assembled engine, including the spark plug, carburetor,
drive washer and prop screws.
** Power output varies with the exhaust used. The value given in the table stands for the maximum available power output.
45GX Evolution Engine Dimensions
A
180mm
C
71mm
E
78mm
G
M10x1mm B
122mm
D
78mm
F
6.6mm
H
55mm
Bore
Stroke
Displacement
Weight without ignition*
Weight of ignition unit
RPM range
42mm
42mm
58cc / 3.6 cu in
1820 g / 64.2 oz
165 g / 5.8 oz
1000–7500 rpm
Maximum power output**
Maximum torque**
Fuel
Lubrication
8.5 HP / 6950 rpm
5.1 ft-lb / 6400 rpm
Unleaded gasoline
Oil w/gasoline
in mixture 1:40
58GX Evolution Engine Dimensions
A
190mm
C
75mm
E
78mm
G
M10x1mm B
140mm
D
78mm
F
6.6mm
H
55mm
58GX
45GX