Honda CRF50F 2004-2015 - Ignition System Inspection

IGNITION SYSTEM INSPECTION
• If there is no spark at plug, check all connections
for loese or poor contact before measuring each
peak
voltage.
•
Use recommended digital multi mete r or com-
mercially available digital multimeter with an
impedance of 10 MruDCV minimum.
• The display value differs depending upon the
interna l impedance of the multi me ter.
• If using peak voltage tester (U.S.A. only), follow
the manufacturer's operating instructions.
IGNITION SYSTEM
DIGITAL MULT1METER
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Con nect the peak vol tage adaptor to the digital
multimeter, or use the peak voltage tester (U.S.A.
only) .
PEAK VOLTAGE ADAPTOR
TOOLS:
Peak vo ltage te s ter
Peak vo lt ag e adaptor
MTP07-0286
(U.S.A. only ) or
07HGJ-0020100
(Not avail ab le in
U.S.A.)
with commercia ll y avail ab le digital multimeter
( impedance 10 M Q/ DCV minimum)
IGNITION COIL PRIMARY PEAK VOLTAGE
• Check all system connections before inspection. " KCNCO :c- WCN :c- G =-= OCOCD:-:SCpCACRCK -:c: pCLCUCG ::----------,
If the system is disconnected, incorrect peak volt-
age might be measured .
• Check cylinder compression and check that the
spark plug is installed correctly.
Disconnect the spark plug cap from the spark plug.
Connect a known good spark plug to t he spark plug
cap and ground the spark plug to the cylinder head
as
done in a spark test.
With the ignition coil primary wire connecte d, con- ~=_= :'::~~ ='=G=N='=T='O=N=C=O='======= =~
nect the peak voltage adaptor or peak voltage tester If
to probes to the ignition coil primary wire terminal [QJ
and ground.
CONNECTION:
Black/
yello w tenninal (-) - Body ground (+)
Turn the ignition switch ON and engine stop switch
to "RUN".
Shift the transmission into neutral.
Crank the engine with k ickstarter and read ignition
coil primary peak voltage.
PEAK VOLTAGE: 100 V minimum
If the peak vol tage is abnormal, follow the checks
described in the tr oubleshooting chart (page 14-4).
••
1+)
14-5