Ski-Doo Formula 500 1998, Shop Manual

Page: 230 / 398

Section 06 ELECTRICAL
Subsection 03 (SPARK PLUGS)
06-03-2
DESIGN SYMBOLS USED IN NGK SPARK PLUGS
A00E4NS
B R 9
E S
15
Thread
diameter
Heat rating
numbers
Reach
Firing end
construction
Construction
PREFIX SUFFIX
WIDE GAP
10: 1.0 mm (.040")
11: 1.1 mm (.044")
13: 1.3 mm (.050")
14: 1.4 mm (.055")
15: 1.5 mm (.060")
20: 2.0 mm (.080")
19 mm
(3/4")
Taper
Seat
12.7mm
(1/2")
11.2 mm
(7/16")
21 mm
(53/54")
E:
F:
H:
L:
Z:
2
Hot
4
5
6
7
8
9
10
Cold
18 mm
14 mm
10 mm
12 mm
8 mm
12 mm x 19 mm
Reach
A:
B:
C:
D:
E:
J:
Special Design
Single Ground
Special Alloy
Dual Ground
Special Alloy
Racing Type
Racing Version
of V-Type
Half Heat Range
Standard Center
Electrode
Fine Wire Center
Electrode
Booster Gap
V-Grooved Center
Electrode
A:
GV:
B:
C:
G:
L:
S:
V:
X:
Y:
Blank
18 mm ø 12 mm
(31/64")
14 mm ø 9.5 mm
(3/8")
Compact Type
Projected
Insulator Type
Resistor Type
Surface Discharge
Inductive
Suppressor Type
M:
P:
R:
U:
Z:
A01E1PS
Standard
Type
CROSSCUTS AND GAP STYLES OF SPARK PLUGS
Surface
Discharge Type
Projected
Insulator Type
Taper
Seat Type
V-Type