60HP outboard wont start

[gavo1968]

I have a 60 hp that turns over but wont start. The engine was working fine when last used 3 weeks ago There is no spark at any of the plugs I have checked the fuse in the wiring harness and If I've done it correctly have incorrect readings at the pulser and charge coils.
My readings were
Pulser coil .02V to.05V with plug connected @ cranking speed
Charge coil 0 V with plug connected @cranking speed
Have checked the CDI and same thing not getting the correct readings

If any of these are playing up will they cause the other not to work?
Is there electrical power flow chart or description of how it works available?

I am also assuming I have the correct specifications. I'm using specs for a 60 from the net. I have not been able to find the model number for this engine, there are no tags where they are supposed to be.6H1-12 is all I've been able to match.

Any help will be appreciated
Gavin

[greasyshaft]

Are you measuring peak voltage ??
Does the charge coil peak output change when disconnected?

Disconnect the main 10 pin harness and jump positive to the brown feed wire going into the starter relay.
If you have spark when doing this you can isolate the problem to the boat or the outboard

[gavo1968]

The following is how I tested the coils, cut and pasted from the manual I downloaded.

so I'm assuming I was testing peak output.

I am not getting an voltage from the sparkplug coils. When you say disconnected you mean from the spark plug? Not getting voltage when lead disconnected from the spark plug
3. Pulser coil output:
1) Disconnect the pulse coil couple.
Connect the 2 pins test harness.
2) Connect the tester to the measurement
terminal.
3) Set the tester dial to specification.
4) Crank or start the engine.
5) Measure the pulser coil output.
6) If the output is beyond specification,
replace CDI unit.
7) If the output is below specification,
replace pulser coil50, 60, 70 hp

Pulser coil
Output peak voltage (minimum)
W/R – W/B
r/min Cranking
1,500 3,500
Open Connect
V 4.5 2.5 6.5 10

2. Charge coil output:
1) Disconnect the charge coil coupler.
Connect the 2/3 pins test harness.
2) Connect the tester to the measurement
terminal.
3) Set the tester dial to specification.
4) Crank or start the engine.
5) Measure the charge coil output.
6) If the output is below specification,
replace the charge coil.
7) If the output is beyond specification,
measure pulser coil output.

[99yam40]

You have to use the proper test equipment to test the peak voltage.
A DVA adapter will work with a regular voltmeter if you do not have the Peak reading meter made for testing these motors

[gavo1968]

looks like Ill have to get one

[rodbolt17]

a peak reading meter or a DVM with a DVA adapter is the only way to test peak output voltages.
true RMS is not peak.

remember all that is happening is a spinning magnet is passing a coil generating an AC voltage.
\
the pulser coil is a low voltage used as a trigger.
the charge coil is a higher voltage, typically over 150V peak.
all it does is charge some capacitors in the CDI.

the CDI simply rectifies and stores this voltage waiting on a trigger signal.

when triggered the CDI simply discharges into the ign coil primary.

the CDI does NOT amplify voltage.

that's why the test is done loaded and unloaded.
if the CDI never discharges you will see low voltage on the charge coil when loaded.

[gavo1968]

Thanks for the advice
ill most likely take it to a dealer .I don't like my chances of getting the proper test leads

[rodbolt17]

did you make sure the stop lanyard was in place ?