Honda 2004 CRF250X Service Manual

IGNITION SYSTEM INSPECTION
Avoid touching the
spark plug and
rester probes to
prevent electric
shock.
• If there is no spark at the plug, check all connec -
tions for loose or poor contact before measuring
each peak voltage.
• Use the recommended digital multimeter or a
commercially avail able digital mu l timeter with
an impedance of 10MnlDCV minimum.
• The display value differs depending upon the
internal impedance of the multi meter.
Connect the peak voltage tester (lgnitionMate,
U.S.A. only ) or peak voltage adaptor to the digital
multimeter.
TOOLS:
Ignition Mate peak voltage tester MTP07·0286
!U.S.A. only) or
P ea k voltage adaptor 07HGJ-0020100
( not available in
U.S.A.)
with commercially available digital multimeter
(impedance 10 M nJ DCV minimum)
IGNITION COIL PRIMARY PEAK
VOLTAGE
Check all system connections before inspection.
Check cylinder compression and check that the
spark plug is installed correctly.
Shift the transmission into neutral.
Remove the fuel tank (page 2-7).
Disconnect the direct ignition coil 2P connector and
connect the peak voltage adaptor test probes to the
terminals.
TOOLS:
Ignition Mate peak voltage te s ter MTP07-0286
(U.S.A.
only) or
Peak voltage adaptor 07HGJ-0020100
(
not available in
U_S.A .)
with commercially available digital multi meter
(impedance 10 M lli DCV minimum)
CONNECTION: Black /y ellow (+) - Green (-)
Crank the engine with the starter motor or
kickstarter and read the direct ignition coil input
voltage.
STANDARD: 200 V minimum
If the voltage cannot be measured, follow the
checks described in the troubleshooting chart on
page 17-4.
IGNITION SYSTEM
DIGITALMULTIMETER
-'
. . (impedance 10 Mill
~ \ :" .. ~'
_ 0
PEAK VOLTAGE ADAPTOR
17-5

Honda 2004 CRF250X Specifications

General

Engine Type	249cc liquid-cooled single-cylinder four-stroke
Bore x Stroke	78.0mm x 52.2mm
Compression Ratio	12.5:1
Induction	Keihin 37mm flat-slide carburetor
Transmission	5-speed
Final Drive	O-ring-sealed chain
Front Suspension	47mm inverted Showa cartridge fork with 16-position rebound and 16-position compression damping adjustability; 12.4 inches travel
Rear Suspension	Pro-Link Showa single shock with spring preload, 17-position rebound damping adjustability, and compression damping adjustment separated into low-speed (13 positions) and high-speed (3.5 turns); 12.4 inches travel
Front Brake	Single 240mm disc with twin-piston caliper
Rear Brake	Single 240mm disc
Front Tire	80/100-21
Rear Tire	100/100-18
Rake (Caster Angle)	27.5°
Trail	113mm (4.4 inches)
Wheelbase	58.3 inches
Seat Height	37.7 inches
Ground Clearance	13.4 inches
Ignition	CD with electronic advance