Checking The Ignition Timing - Yamaha YZF-R1 98 Service Manual

CHECKING THE SPARK PLUGS/
CHECKING THE IGNITION TIM ING
3 - 21
8. Install:
• spark plug
NOTE:
Before installing the spark plug, clean
the spark plug and gasket surface.
EB303050
CHECKING THE IGNITION TIM ING
NOTE:
Prior to checking the ignition tim ing,
check the w iring connections of the
entire ignition system . M ake sure that all
connections are tight and free of corro-
sion.
1. Rem ove:
• bottom cow ling
Refer to " COWLINGS" .
• rider seat
• fuel tank
Refer to " SEATS" and " FUEL TANK" .
• air filter case
Refer to " AIR FILTER CASE AND IGNI-
TION COIL PLATE" .
• tim ing m ark accessing screw 1
2. Install:
• tim ing light 1
• engine tachom eter
(onto the spark plug lead of cylinder #1)
Timing light
90890-03141
Engine tachometer
90890-03113
3. Check:
• ignition tim ing
a. Start the engine, w arm it up for sev-
eral m inutes, and then let it run at the
specified engine idling speed.
Engine idling speed
1,050 ~ 1,150 r/ min
CHK
ADJ
13 Nm (1.3 m · kg)