Specifications

• If the engine has less than
90 psi (6.2 bar)
compression, the
carburetor will not have
enough vacuum to draw
fuel into the engine
• The engine will have to be
torn down to determine
the cause of the low
compression
• If the engine has more
than 125 psi (8.6 bar), the
engine will not breath
properly
• Check the valve
adjustment
• Check for restrictions in
the exhaust
Mini 4cycle Engine