6. CYLINDER HEAD/VALVE
6-10
Use 60° cutter to cut a quarter lower parts out.
Remove the cutter and check new valve seat.
Use 45° cutter to grind the valve seat to specified
width.
Caution
Make sure that all roughness and uneven faces
had been ground.
Grind valve seat again if necessary.
Coat the valve seat surface with red paint.
Install the valve through valve guide until the valve
contacting with valve seat, slightly press down the
valve but do not rotate it so that a seal track will be
created on contact surface.
Caution
The contact surfaces of valve and valve seat are
very important to the valve sealing capacity.
If the contact surface too high, grind the valve seat
with 32° cutter.
Then, grind the valve seat to specified width.
If the contact surface too low, grind the valve seat
with 60° cutter.
Then, grind the valve seat to specified width.
Old valve seat width
60°
1.0mm
60°
45°
32°
Old valve seat width
Contact surface too high
Old valve seat width
Contact surface too low
Summary of Contents for Track Runner 200
Page 1: ...Track Runner 200 SERVICE MANUAL FORWARD HOW TO USE THIS MANUAL CONTENTS SERIAL NUMBER ...
Page 5: ...SERIAL NUMBER Frame number Engine number Home page Contents ...
Page 47: ...3 LUBRICATION SYSTEM 3 8 Notes To this chapter contents ...
Page 59: ...4 FUEL SYSTEM 4 12 Notes To this chapter contents ...
Page 87: ...7 CYLINDER PISTON 7 8 Notes To this chapter contents ...
Page 113: ...9 FINAL DRIVING MECHANISM 9 12 Notes To this chapter contents ...
Page 143: ...12 COOLING SYSTEM 12 14 Notes To this chapter contents ...
Page 153: ...13 BODY COVER 13 10 Note To this chapter contents ...
Page 167: ...14 FRONT BRAKE FRONT WHEEL 14 14 Notes To this chapter contents ...
Page 179: ...15 STEERING SUSPENSION 15 12 Note To this chapter contents ...
Page 197: ...16 REAR BRAKE REAR WHEEL REAR CUSHION 16 18 Note To this chapter contents ...
Page 219: ...17 ELECTRICAL SYSTEM 17 22 Notes To this chapter contents ...
Page 220: ...18 ELECTRICAL DIAGRAM 18 1 18 Home page Contents TRACK RUNNER 180 ELECTRICAL DIAGRAM ...
Page 221: ...18 ELECTRICAL DIAGRAM 18 2 Notes Home page Contents ...