Carbureted Models
Run engine until it reaches normal operating temperature. Remove all spark plugs and coil high tension wire. Hold throttle valve wide open and operate engine at cranking speed, when checking compression.
COMPRESSION SPECIFICATIONS
| Application | Specification |
|---|---|
| Compression Ratio | 9.0:1 |
| Normal Compression Pressure | 178 psi (12.5 kg/cm2 ) |
| Min. Compression Pressure | 128 psi (9.0 kg/cm2 ) |
| Max. Variation Between Cylinders | 14 psi (1.0 kg/cm2 ) |