Yamaha TP-7023 User Manual Page 11
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- Table of contents
- BOOKMARKS
Rated. / 5. Based on customer reviews
CM Short, angled ground electrode, compact top
CS Short, angled ground electrode
F Taper seat (no gasket), 'V' - Grooved centre
electrode
FS Taper seat (no gasket)
G Fine wire nickel centre electrode
I Iridium tip
IX Fine wire Iridium centre electrode- Ø 0.6mm
K 2-ground electrodes, intermittent gap
KC 2-ground electrodes
KUB 2-ground electrodes semi-surface discharge
-L Half heat range
-LM Compact design, Insulator top - 14.5mm high
-LPG
Specifically designed for use with LPG
-N Strong ground electrode design
P Platinum tip
Q 4-ground electrodes
S Standard super copper core centre electrode
T 3-ground electrodes
U Semi-surface discharge
V
Fine wire Gold Palladium centre electrode- Ø 1.0mm
-VG ‘V’ - Grooved centre electrode
VX Fine wire Platinum centre electrode- Ø 0.8mm
W Tungsten electrode
X Booster gap (not applicable to 'VX'/'IX' type)
Y V-Grooved centre electrode with extra projection
Z
Ø 2.9mm centre electrode (not applicable to
DPR_Z or G-2Z)
No Symbol: 'V' - Grooved centre electrode
(14mm thread dia. 19mm reach plugs only, eg: BKR6E)
Others: A,B,D etc, - special design
Firing End Construction, etc
B C P R 6 E S 11
A 18mm 1.50mm 25.4mm
B 14mm 1.25mm 20.8mm
C 10mm 1.00mm 16.0mm
D 12mm 1.25mm 18.0mm
E 8mm 1.00mm 13.0mm
G PF½" pipe - 23.8mm
AB 18mm 1.50mm 20.8mm
BC 14mm 1.25mm 16.0mm
BK 14mm 1.25mm 16.0mm
DC 12mm 1.25mm 16.0mm
Part nos. BM_A and BPM_A:
14mm 1.25mm 19.0mm
Part no. CM-6:
10mm 1.00mm 14.0mm
Thread Ø Pitch Hex †
M Compact (Bantam)
L Short type
P
Projected centre
electrode insulator
R Resistor type
U
Surface or semi
surface discharge
Z Inductive suppressor
Construction
shape/feature
LETTERS MAY BE
COMBINED
Taper Seat Types
Hex †
A
_
F type 20.8mm
B
_
F type 16.0mm
11
6P
F
R
A
A
E 19.0mm
H 12.7mm
L 11.2mm
EH (Part Threaded)
Total reach = 19.0mm
Thread = 12.7mm
BM_A, B_LM types 9.5mm
CMR_A types 9.5mm
Thread Reach
F A
_
F type 10.9mm
B
_
EF type 17.5mm
B
_
F type 11.2mm
BM
_
F type 7.8mm
BPM
_
F type 7.8mm
Taper Seat Types
A
_
type 12.0mm
B
_,
BM
_
type 9.5mm
CM
_
type 8.5mm
G
_
type 22.5mm
No Symbol
Projected Gap Types
Example:
B C R E 5 2 7 Y
Heat rating Spark position:
7 = 7.0mm, 9 = 9.5mm
Insulator projection: 2.5mm
8 0.8mm
9 0.9mm
10 1.0mm
11 1.1mm
13 1.3mm
14 1.4mm
15 1.5mm
No number = standard gap
Spark Gap (pre-set)
Spark Gap (pre-set)
DI DFE - double fine electrode
(spark discharges between fine
platinum pin on ground and
iridium pin on centre electrodes
)
I Iridium centre electrode and
platinum ground
P Platinum ground and centre
electrode
S SPE - special square platinum
chip in ground electrode
L
Extra long reach thread. 26.5mm:
gasket type or 25mm: taper
seat type (not applicable to LR8B
or all LPG numbers)
Z Extended gap (extra projection)
Plug Type
A, B, C ... Design series
_IX
Iridium centre electrode
Design Feature
F 14.0mm 1.25mm 19.0mm* 16.0mm
G 14.0mm 1.25mm 19.0mm 20.8mm
J 12.0mm 1.25mm 19.0mm 18.0mm
K 12.0mm 1.25mm 19.0mm* 16.0mm
KA 12.0mm 1.25mm 19.0mm* 14.0mm
KB 12.0mm 1.25mm 19.0mm* 14.0mm Bi-Hex
M 10.0mm 1.00mm 19.0mm* 16.0mm
MA 10.0mm 1.00mm 19.0mm* 14.0mm
T Taper seat type (no gasket)
14.0mm 1.25mm 17.5mm* 16.0mm
(Exception) PTR5A,TR5A & TR5B:
14.0mm 1.25mm 25.0mm 16.0mm
Thread Ø Pitch Reach* Hex
†
R Resistor
Resistor
This chart is applicable to spark plugs currently available via
NGK Spark Plugs (UK) Ltd only.
The dedicated range of NGK racing spark plugs is not included.
This chart is not exhaustive. Other symbols exist which are not
represented on the chart.
2
4
5
6
7
8
85 (8.5)
9
95 (9.5)
10
105 (10.5)
11
12
Spark Plug
Heat Rating
Hotter Plug
Temp.
Spark Plug
Heat Rating
BK=BCP to ISO standard
The height from the gasket to the top terminal
is 50.5mm on BK type spark plugs,
which is 2.5mm shorter than BCP type
'Softer'
'Harder'
Colder
Plug Temp.
LETTERS MAY BE COMBINED
eg: IZ, PZ, PLZ, SIL etc.,
* Reach is increased if letter is preceded by ‘L’
A, B, C ... Design series
G Copper core ground electrode
S Special gasket
Design Feature
LPG1-8 Special electrode design and plating
specifically for LPG use. Numbers refer to
design, not heat range
† Hex measured across the flats
DESIGN SYMBOLS
9
- Motorcycle 1
- CONTENTS 3
- SPARK PLUG DESIGN 4
- NGK’S COPPER CORE TECHNOLOGY 5
- THE IRIDIUM IX SPARK PLUG 8
- SPARK PLUG INSTALLATION TIPS 10
- DESIGN SYMBOLS 11
- NGK Spark Plugs (UK) Ltd 12
- APRILIA (CONTINUED) 14
- BENELLI (CONTINUED) 16
- BETA / BETAMOTOR 16
- BETA / BETAMOTOR (CONTINUED) 17
- BMW (CONTINUED) 19
- CCM (ARMSTRONG-CCM) 20
- CAGIVA (CONTINUED) 20
- DERBI (CONTINUED) 22
- DUCATI (CONTINUED) 23
- GAS GAS (CONTINUED) 25
- HARLEY DAVIDSON 26
- HERO-PUCH 26
- GILERA (CONTINUED) 26
- HONDA (CONTINUED) 28
- HUSABERG 31
- HUSQVARNA 31
- HUSQVARNA (CONTINUED) 32
- KAWASAKI 35
- KAWASAKI (CONTINUED) 36
- KREIDLER 39
- KTM (CONTINUED) 40
- MOTO GUZZI 43
- MOTO HISPANIA 44
- MOTO MORINI 44
- MOTO ROMA 44
- MOTO GUZZI (CONTINUED) 44
- PIAGGIO / VESPA 47
- SUZUKI (CONTINUED) 51
- TRIUMPH PRE-1989 55
- TRIUMPH 1991-ON 55
- YAMAHA (CONTINUED) 57
- ATV Quad 64
- QUADZILLA 66
- POLARIS (CONTINUED) 66
- CONVERSION CHART 69
- ASTON MARTIN 70
- BRIGGS & STRATTON 75
- CHINESE BRANDS 78
- ENKER / BOSNA 82
- ENKER/BOSNA 82
- HARLEY-DAVIDSON 83
- 31909-MEN-A310-M1 83
- MARCHAL/VALEO 86
- 9111-310002-CH BPMR6F 1270 87
- 004 159 30 03 26 BKR6EZB 4293 87
- 12 12 0 031 708 BKR7EQUP 4285 87
- MITSUBISHI 88
- YN2F-12405A2A TR5B-13 4559 89
- NGK RESISTOR PLUG COVERS 95
- SPARK PLUG COVERS 96
- PLUG COVER SUPERSESSIONS 98
- TECHNICAL INFORMATION 99
- CONNECTOR TYPES 103
- SM0010/11/11 106
- Bikers won’t fit 107
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