VALVES AND VALVE SPRINGS
5-12
REMOVING THE VALVES
The following procedure applies to all of the
valves and related components.
TIP
Before removing the internal parts of the cylinder
head (e.g., valves, valve springs, valve seats),
make sure the valves properly seal.
1. Check:
• Valve sealing
Leakage at the valve seat
→
Check the valve
face, valve seat, and valve seat width.
Refer to “CHECKING THE VALVE SEATS”
on page 5-14.
a. Pour a clean solvent “a” into the intake and
exhaust ports.
b. Check that the valves properly seal.
TIP
There should be no leakage at the valve seat “1”.
2. Remove:
• Valve cotter
TIP
Remove the valve cotter by compressing the
valve spring with the valve spring compressor
“1”.
3. Remove:
• Valve spring retainer “1”
• Valve spring “2”
• Valve “3”
• Valve stem seal “4” (intake side only)
TIP
Identify the position of each part very carefully so
that it can be reinstalled in its original place.
CHECKING THE VALVES AND VALVE
GUIDES
The following procedure applies to all of the
valves and valve guides.
1. Measure:
• Valve-stem-to-valve-guide clearance
Out of specification
→
Replace the valve
guide.
Valve spring compressor
90890-04019
Valve spring compressor
YM-04019
• Valve-stem-to-valve-guide clearance =
Valve guide inside diameter “a” -
Valve stem diameter “b”
Valve-stem-to-valve-guide clear-
ance (intake) limit
0.080 mm (0.0031 in)
Valve-stem-to-valve-guide clear-
ance (exhaust) limit
0.100 mm (0.0039 in)
3
2
1
4
Содержание UMAX
Страница 1: ...SERVICE MANUAL UTILITY VEHICLE J0F F8197 E1 YUM1A YUM2A YUM2E LIT 19616 A0 37...
Страница 2: ......
Страница 6: ......
Страница 8: ......
Страница 25: ...GENERAL SPECIFICATIONS 2 2 1174 kg 2589 lb YUM2E Hill claiming ability 20 YUM1A 15 YUM2A YUM2E...
Страница 33: ...ELECTRICAL SPECIFICATIONS YUM1A YUM2A 2 10 USB fuse 5 A...
Страница 43: ...TIGHTENING TORQUES 2 20...
Страница 46: ...CABLE ROUTING 2 23 YUM1A Front and rear A B C 1 1 1 1 2 3 4 3 4 1 2 3 4 5 6...
Страница 48: ...CABLE ROUTING 2 25 YUM1A Left side A B D C 1 2 3 4 4 4 4 5 6 7 8 9...
Страница 50: ...CABLE ROUTING 2 27 YUM1A Brake and throttle cables A B 1 3 2 3 1 2 2 4 5...
Страница 52: ...CABLE ROUTING 2 29 YUM1A Shift cables 1 2 3 1 2 4 1 2...
Страница 53: ...CABLE ROUTING 2 30 1 Shift control cable forward 2 Shift control cable reverse 3 Plastic band 4 Reverse switch...
Страница 54: ...CABLE ROUTING 2 31 YUM2A Frame top view A B C 1 1 1 2 3 4 5 6 7 8 1 1 1 1 1 2 3 6 9 10 11 12 13 14 15 16 D E...
Страница 56: ...CABLE ROUTING 2 33 YUM2A Front and rear A B C D 1 1 1 1 1 2 2 3 3 4 4 3 4 5 6 7...
Страница 58: ...CABLE ROUTING 2 35 YUM2A Left side A B C D 1 2 3 4 4 4 4 6 7 8 9 10 5...
Страница 60: ...CABLE ROUTING 2 37 YUM2A Brake throttle and shift cables A A B C D 1 1 2 3 3 4 5 4 5 6 6 7 8 9...
Страница 62: ...CABLE ROUTING 2 39 YUM2E Frame top view A A B 1 2 3 4 5 6 7 C D E E 6 6 6 8 9 10 11 12...
Страница 64: ...CABLE ROUTING 2 41 YUM2E Front and rear 1 1 2 3 4 3 A...
Страница 66: ...CABLE ROUTING 2 43 YUM2E Left side B 2 1 3 4 5 6 7 8 9 10 11 A 9...
Страница 68: ...CABLE ROUTING 2 45 YUM2E Brake cable A A B C 1 2 4 3...
Страница 70: ...CABLE ROUTING 2 47...
Страница 73: ......
Страница 96: ...4 YEAR CHECKS 3 23...
Страница 99: ......
Страница 134: ...FRONT SUSPENSION COMPONENTS 4 35 4 3 1 2 5 a...
Страница 138: ...REAR SUSPENSION COMPONENTS 4 39...
Страница 174: ...CRANKSHAFT AND PISTON 5 35...
Страница 196: ...TRANSMISSION YUM1A YUM2A 7 13 Refer to CHECKING THE SHIFT LEVER YUM1A YUM2A on page 3 8...
Страница 202: ...TRACTION MOTOR YUM2E 7 19...
Страница 205: ......
Страница 217: ...CHARGING SYSTEM YUM1A YUM2A 8 12...
Страница 218: ...CHARGING SYSTEM YUM2E 8 13 CHARGING SYSTEM YUM2E CIRCUIT DIAGRAM R R B R B B B B 27 28 27 Battery 28 Charging receptacle...
Страница 223: ...LIGHTING SYSTEM YUM1A YUM2A 8 18...
Страница 227: ...LIGHTING SYSTEM YUM2E 8 22...
Страница 233: ...SIGNALING SYSTEM YUM1A YUM2A 8 28...
Страница 243: ...FUEL INJECTION SYSTEM YUM1A YUM2A 8 38...
Страница 247: ...FUEL PUMP SYSTEM YUM1A YUM2A 8 42...
Страница 284: ...ELECTRICAL COMPONENTS YUM2E 8 79...
Страница 313: ...PC GENIUS GOLF CAR PROGRAMMING SYSTEM YUM2E 9 28...
Страница 315: ......
Страница 316: ......