Mercury 15XD - Page 7

SPECIFICATIONS
Page 1A-4 90-826883R2 JUNE 1998
IGNITION
SYSTEM
Readings taken @
68°F (20°C).
Type
Spark Plug Type (NGK)
Spark Plug Gap
Spark Plug Hex
Firing Order
20 Jet 1994
1
/
2
THRU 1998
20/25 1994
1
/
2
THRU 1996
Electronic Spark Advance
Idle @ 750 ± 50 RPM (In Forward
Gear)
Fast Idle Speed
Maximum BTDC (Running)
Setup Timing
Stator High Speed Winding
Stator Low Speed Winding
Diode Test
Ignition Coil Resistance:
Primary
Secondary (w/o Boots)
20 Jet 1999 and Newer
20/25 1997/98 Models
Mechanical Spark Advance
Idle @ 750 ± 50 RPM (In Forward
Gear)
Fast Idle Speed
Maximum BTDC (Running)
Stator High Speed Winding
Stator Low Speed Winding
Diode Test
Ignition Coil Resistance:
Primary
Secondary (w/o Boots)
Trigger
Capacitor Discharge Ignition
NGK BP8H-N-10
0.040 in. (1.0 mm)
18 mm
1-2
4°±2° B.T.D.C (Not Adjustable)
1400 RPM ± 250 RPM
25°±1 @5500 RPM
28° B.T.D.C. @ 3000 ± 200 R.P.M.
(Set-up timing of 28° B.T.D.C. will
be retarded to 25° B.T.D.C. @
5500 R.P.M.)
100 – 180 Ω (RED – BLK)
2900 – 3500 Ω (BLUE – BLACK)
2800 – 3400 Ω (RED – BLUE)
0 Ω
850 – 1200 Ω
6°±1° B.T.D.C
1500 RPM ± 200 RPM
25°±1 @5500 RPM
120 - 180 Ω (BLK/WHT - GRD)
3200 - 3800 Ω (BLK/YEL - GRD)
3100 – 3700 Ω (BLK/YEL - BLK/
WHT)
0.02 - 0.04 Ω
8000 - 11000 Ω
6500 - 8500 Ω
JET DRIVE Impeller Liner Clearance 0.030 in. (0.8 mm)
* Use NGK BPZ8H-N-10 Where Radio Frequency Interference (RFI) Suppression is
Required.