BOMBARDIER 1982 Shop Manual page 314

SECTION 04 ELECTRICAL
SUB-SECTION 03 (SPARK PLUGS)
EXPLANATION OLD SYSTEM
Example:
M
For Marine Engines, resistant to seawa -
ter
.p Electrodes with Platinum Tips
S
Silver Center Electrode
X Wide-Gap Electrodes - .060"
X4
Wide-Gap Electrodes - .044"
X6 Wide-Gap Electrodes - .060"
Thread Reach
ER Shielded , water-proof ; built-in
burn-off resistor
M Plugs for 2-cycle engines
P
Electrodes of precious metals
~~----l R
Suppressor resistor , 5000 ohms,
built-in
S
Silver ground electrode
T
Standard type
Z
Semicovered front electrode
L - - - -- ---l Heat Range
A SAE conical seat
AK
Miniplug with tapered seat
B
SAE connector dimensions , for
7 mm dia. cable
C SAE connector dimensions, for
5 mm dia. cable
L -_ _ _ _ _ - - ;
D Glide-air-gap spark plug with
conical seat
E
Surface gap (C .D. ignition)
G
Glide-air-gap spark plug with
control electrode
K
Mini-plug w ith special connector
KA
Mini-plug
V Booster gap
Thread
M
M 18 X
1.5
U
M10
x
1
W M 14
x
1.25
X M 12
x
1.25
Z
f'
-18 SAE
PAGE314
EXPLANATION NEW SYSTEM
Example:
X wide gap
044" (1.1 mm)
Y wide gap
.060" (1.5 mm)
1 special
0J
2
shell or
3 electrode
4
designs
5
Thread Reach:
A Thread reach -.460" standard
electrode
B
Thread reach .460" extended
ti p el ectrode
C Thread reach
i"
regular
electrode
D
Thread reach
i"
extended tip
E Thread reach
i"
regular
electrode
F
Thread reach
i"
extended tip
electrode
P Platinum electrode
S Silver electrode
L - -- - - - t
Heat Range
B
C
E
R
S
SAE connector for 7 mm
diameter cable
SAE connector for 5 mm
diameter cable
Surface gap
Resistor
Mini-plug
Thread:
D
H
18 mm thread diameter
tapered seat
14 mm thread diameter
tapered seat
M 18 mm thread diameter
U 10 mm thread diameter
W 14 mm thread diameter
X 12 mm thread d iameter