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CHAPTER 3 ENGINE
Fill coolant into the reservoir tank till between upper and
lower limit.
Install reservoir tank cap.
Warning: Never mix with other brand
Inspection of Radiator Hose
Perform inspection every 40 hours
Check radiator hose and clamp.
Leakage or Damage: →Replace
3.3.5 Inspection of cylinder pressure
Check cylinder pressure is necessary.
Cylinder Pressure: 1000kpa
A lower cylinder pressure may be caused by:
Excessive wear of cylinder;
Wear of piston or piston ring;
Piston ring jam in groove;
Poor closure of valve seat;
Damaged cylinder gasket or other defects
Note: When cylinder pressure too low, check the above
items.
Testing Cylinder Pressure
Note: Before testing of cylinder pressure, make sure that
cylinder head bolts are tightened to the specified torque
and valve clearance has been properly adjusted.
Warm up the engine before testing;
Make sure battery is fully charged;
Remove spark plug 1;
Install cylinder pressure gauge 2 in spark plug
hole and tighten nut;
Keep throttle full open;
Press start button crank the engine a few
seconds. Record the maximum reading of
cylinder pressure.
Tools: Cylinder Pressure Gauge
Adaptor
T-Boss550 SERVICE MANUAL20.0
CHAPTER 3 ENGINE
PAGE. 3- 32
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