Hisun HS400 - Page 73

Maintenance and Adjustment
3-7
6. After adjustment, check that the
throttle closes completely, if not
readjust the cable free play.
7. Install External cover
8. Install Driver’s seat, Passenger’s
seat.
CHECKING THE SPARK PLUG
1. Remove the seat.
2. Pull out the spark plug cap
3. With compressed air blow out the
spark plug hole around the plug.
4. Remove the spark plug and check
that it is the correct plug.
Standard spark plug
DR8EA/NGK
5. Inspect the electrode (1) of the
spark plug. Look for burnt condition
or carbon deposits. Clean and
check Spark Plug Gap (a).
Spark Plug Gap
0.6mm to 0.7mm
6. Install the spark plug.
17.5 Nm (1.8 kg ·m, 12.9 lb ·ft)
7. Install the spark plug cap.
8. Install the seat.
Compression Test
1. Start the engine and let it warm up
for several minutes.
2. Stop the engine and remove the
spark plug.
3. Assemble the compression Tester
(1)and adapter (2) and thread it into
the spark plug hole.
4. Install the ignition grounding tool.
5. Crank over the engine with the
electric starter (be sure the battery
is fully charged) with the throttle
wide-open until the compression
reading on the gauge stabilizes.
Compression pressure
(at sea level)
Standard: 950Kpa
(9.7 kg/cm2, 137.8Psi)
Minimum: 900Kpa
(9.2 kg/cm2, 130.5Psi)
Maximum: 1000Kpa
(10.0kg/cm2, 145Psi)
6. Install spark Plug
17.5 Nm (1.8 kg ·m, 12.9 lb ·ft)