Checking The Ignition Timing - Yamaha YXR70FX Service Manual

CHECKING THE IGNITION TIMING

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EBS00058
CHECKING THE IGNITION TIMING
TIP:
_
Throttle cable free play should be adjusted
properly before checking the ignition timing.
1. Remove:
• seats
• rear console
Refer to "SEATS, REAR CONSOLE AND
INSTRUMENT PANELS" in chapter 8.
• fuel tank
Refer to "FUEL PUMP AND FUEL TANK" in
chapter 6.
2. Attach:
• tachometer
• timing light
(to spark plug lead)
Digital tachometer
90890-06760, YU-39951-B
Timing light
90890-03141
Inductive clamp timing light
YU-03141
3. Check:
• ignition timing
M MMM M MMM M M MMM M M MMM M
a. Warm up the engine and keep it at the
specified speed.
Engine speed
1,550 ~ 1,650 r/min
b. Remove the timing mark accessing screw
1.
CHK
ADJ
M MMM M M MMM M MMM