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Engine Compression

Check compression pressure with engine at normal operating temperature, all spark plugs removed, throttle and choke valves wide open and engine at cranking speed.

COMPRESSION SPECIFICATIONS

Application Specification
Compression Ratio 9.2:1
Compression Pressure 120-150 psi (8.4-10.5 kg/cm2 )
Maximum Variation Between Cylinders 30 psi (2.1 kg/cm2 )
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