Suzuki RA410 Manual page 264

7) Disengage clutch (to lighten starting load on engine) for M/T
model, and depress accelerator pedal all the way to make
throttle valve full-open.
8) Crank engine with fully charged battery, and read the highest
pressure on compression gauge.
NOTE:
For measuring compression pressure, crank engine at
least 250 r/min. by using fully charged battery.
Standard
Limit
Max. difference between any
two cylinders
9) Carry out steps 6) through 8) on each cylinder to obtain four
readings.
10) After checking, connect ignition coil coupler securely and
install spark plugs.
11) Install air cleaner assembly and resonator.
Refer to "AIR CLEANER ASSEMBLY AND RESONATOR".
ENGINE MECHANICAL 6A4-5
Compression pressure
1250 kPa
2
(12.5 kg/cm , 177.8 psi)
900 kPa
2
(9.0 kg/cm , 128.0 psi)
100 kPa
2
(1.0 kg/cm , 14.2 psi)