2008 Yamaha Motorsports FX Nytro RTX Owners Manual - Page 51

2008 Yamaha Motorsports FX Nytro RTX Manual

Get 2008 Yamaha Motorsports FX Nytro RTX PDF manuals and user guides View all 2008 Yamaha Motorsports FX Nytro RTX manuals

Page 51 highlights

Periodic maintenance Specified spark plug: Manufacturer: NGK Model: CR9E Spark plugs are produced in several different thread lengths. The thread length or reach is the distance from the spark plug gasket seat to the end of the threaded portion. If the reach is too long, overheating and engine damage may result. If the reach is too short, spark plug fouling and poor performance may result. Also, if the reach is too short, carbon will form on the exposed threads resulting in combustion chamber hot spots and thread damage. Always use a spark plug with the specified reach. Spark plug reach: 19.0 mm (0.75 in) When installing the spark plug, always clean the gasket surface. Wipe off any grime from the threads and tighten the spark plug to the specified torque. Spark plug tightening torque: 12.5 Nm (1.25 m·kgf, 9 ft·lb) ECS00380 CAUTION: Make sure that the spark plug caps are securely installed. Otherwise the spark plug caps could be damaged due to engine vibration. ESU12791 Adjusting the throttle cable free play 1. 2. Loosen the locknut. Turn the adjusting bolt in or out until the specified throttle cable free play is obtained. 1. Spark plug gap 2. Spark plug reach Before installing any spark plug, measure the electrode gap with a wire thickness gauge and adjust to specification. Spark plug gap: 0.7-0.8 mm (0.028-0.031 in) 1. Locknut 2. Throttle cable free play adjusting bolt 3. Throttle cable free play Throttle cable free play: 3.0-4.0 mm (0.12-0.16 in) 3. Tighten the locknut. ESU11861 Checking the throttle override system (T.O.R.S.) Check the T.O.R.S. for proper operation. 45

  • 1
  • 2
  • 3
  • 4
  • 5
  • 6
  • 7
  • 8
  • 9
  • 10
  • 11
  • 12
  • 13
  • 14
  • 15
  • 16
  • 17
  • 18
  • 19
  • 20
  • 21
  • 22
  • 23
  • 24
  • 25
  • 26
  • 27
  • 28
  • 29
  • 30
  • 31
  • 32
  • 33
  • 34
  • 35
  • 36
  • 37
  • 38
  • 39
  • 40
  • 41
  • 42
  • 43
  • 44
  • 45
  • 46
  • 47
  • 48
  • 49
  • 50
  • 51
  • 52
  • 53
  • 54
  • 55
  • 56
  • 57
  • 58
  • 59
  • 60
  • 61
  • 62
  • 63
  • 64
  • 65
  • 66
  • 67
  • 68
  • 69
  • 70
  • 71
  • 72
  • 73
  • 74
  • 75
  • 76
  • 77
  • 78
  • 79
  • 80
  • 81
  • 82
  • 83
  • 84
  • 85
  • 86
  • 87
  • 88
  • 89
  • 90
  • 91
  • 92
Periodic maintenance
45
Spark plugs are produced in several different
thread lengths. The thread length or reach is
the distance from the spark plug gasket seat
to the end of the threaded portion. If the reach
is too long, overheating and engine damage
may result. If the reach is too short, spark plug
fouling and poor performance may result. Al-
so, if the reach is too short, carbon will form on
the exposed threads resulting in combustion
chamber hot spots and thread damage. Al-
ways use a spark plug with the specified
reach.
Before installing any spark plug, measure the
electrode gap with a wire thickness gauge
and adjust to specification.
When installing the spark plug, always clean
the gasket surface. Wipe off any grime from
the threads and tighten the spark plug to the
specified torque.
CAUTION:
ECS00380
Make sure that the spark plug caps are se-
curely installed. Otherwise the spark plug
caps could be damaged due to engine vi-
bration.
ESU12791
Adjusting the throttle cable free
play
1.
Loosen the locknut.
2.
Turn the adjusting bolt in or out until the
specified throttle cable free play is ob-
tained.
3.
Tighten the locknut.
ESU11861
Checking the throttle override
system (T.O.R.S.)
Check the T.O.R.S. for proper operation.
Specified spark plug:
Manufacturer:
NGK
Model:
CR9E
Spark plug reach:
19.0 mm (0.75 in)
1.
Spark plug gap
2.
Spark plug reach
Spark plug gap:
0.7–0.8 mm (0.028–0.031 in)
Spark plug tightening torque:
12.5 Nm (1.25 m·kgf, 9 ft·lb)
1. Locknut
2.
Throttle cable free play adjusting bolt
3.
Throttle cable free play
Throttle cable free play:
3.0–4.0 mm (0.12–0.16 in)