VALVES AND VALVE SPRINGS
4-17
CHECK
• valve sealing
Leakage at the valve seat
→
Check the valve
face, valve seat and valve seat width.
a. Pour a clean solvent
①
into the intake and
exhaust ports.
b. Check that the valve seals properly. There
should be no leakage at the valve seat
②
.
• valve face
Pitting/wear
→
Grind the face.
• valve stem end
Mushroom shape or diameter larger than the
body of the stem
→
Replace.
• valve seats
Pitting/wear
→
Reface the valve seat
。
MEASURE:
1.Measure:
• The valves surface width
Repairing limit value
2.0mm
• stem-to-guide clearance
Stem-to-guide clearance = valve guide
inside diameter – valve stem diameter
NOTE
:
If the mating surface is coarse, corrode or
cannot contact with valve seat normally,
replace it.
Stem-to-guide clearance
repairing limit value
Intake:0.12mm Exhaust:0.14mm
• margin thickness (a)
Out of specification
→
Replace.
Margin thickness
Intake:0.85 ~ 1.15 mm
Exhaust:0.85 ~ 1.15 mm
Summary of Contents for UTV 700 2009
Page 1: ...HUANSONG UTV 700 SERVICE MANUAL 2009 ...
Page 96: ...GENERAL SPECIFICATIONS 2 23 HYDROGRAPHIC CHART Hydrographic chart Pressure splash ...
Page 97: ...GENERAL SPECIFICATIONS 2 24 LUBRICATION OIL WAY ...
Page 246: ...5 31 BRAKE SYSTEM No Part Name Qty Remarks 26 Caliper piston seal 1 27 Bleed screw 1 ...
Page 330: ...CHARGING SYSTEM 6 18 CHARGING SYSTEM CIRCUIT DIAGRAM Ignition coil C D I Magneto Rectifier ...