MAINTENANCE AND ADJUSTMENT OF THE UTV
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MEASURING THE COMPRESSION PRESSURE
NOTE:
Insufficient compression pressure will result in
a loss of performance.
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 pressure meter ①
and joint utensil ② on the hole of the spark plug
4. check
valve clearance
Out of specification
Adjust. Refer to “ADJUSTING
THE VALVE CLEARANCE”
standard value
standard compression pressure data
1200Kpa (12kg/c)-1000r/min
5. read the highest data on the compression
pressure meter
·
Above the maximum pressure:
Check the cylinder head, valve surfaces, and
piston crown for carbon deposits.
·
Below the minimum pressure:
Check the accumulation carbon in the firebox of the
cylinder head and accumulation carbon on the
piston head.
·
Refer to the table below.
Compression pressure(with oil introduced into
cylinder)
Reading Diagnosis
Higher than
without oil
Worn or damaged pistons
Same as without
oil
Defective ring(s), valves,
cylinder head gasket or
piston is possible.
Compression pressure
(at sea level)
Standard: 1,324Kpa
(13.24 kg/cm2, 188.31Psi)
Minimum: 1,150Kpa
(11.5 kg/cm2, 163.57Psi)
Maximum: 1,480Kpa
(14.8 kg/cm2, 210.50Psi)
·Crank over the engine with the electric starter (be
MAINTENANCE AND ADJUSTMENT OF THE UTV
- 89 -
sure the battery is fully charged) with the throttle
wide-open until the compression reading on the
gauge stabilizes.
NOTE:
When cranking the engine, ground the spark plug
lead to prevent sparking.
4. Install:
·
spark plug
18 Nm-20Nm (1.8 m · kg, 13 ft · lb)
CHECKING THE ENGINE OIL LEVEL
1. Place the vehicle on a level surface
2. Check:
·engine oil level
Oil level should be between the ②engine oil
mirror maximum and minimum marks.
Oil level low Add oil to the proper level.
Recommended oil
Follow the left chart.
NOTE:
Recommended oil classification:
API Service “SE”, “SF”, “SG” type or equivalent
(e.g. “SF—SE—CC”, “SF—SE—SD” etc.)
NOTE:
Do not allow foreign material to enter the
crankcase.
3. Stop the engine and check the oil level again
NOTE:
Wait a few minutes until the oil settles before
checking the oil level.
NOTE:
Never remove the dipsti]ck just after high speed
operation because the heated oil could spurt out.
Wait until the oil cools down before removing the
dipstick.
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