9.9 Evinrude Help?

[Scottie099]

Hey guys, I recently bought a used Evinrude 9.9 I think its late 70's not to sure. The guy I bought it off said it ran last year for him but a Mechanic had told him 3 years ago that he may need to change the points in the near future. Well I got it home and tryed firing it up and nothin, pulled the plugs and they look ok. Checked for a spark across the gap and found that neither plug has a spark. I'm not really all that formilar with these motor so my first thought was it was the coils that the plug wires are atached too? To be honest I have no idea what the "points" are, or what they look like....and yes I've spent a couple hours searching and found some usefull information but not that would give me an exact answer or answers on what the problem maybe?
So guys anyone have any idea what might cause this?
Where can you find cheap replacement parts for these motors?

Model Number 10524c
Ser C85149

Thanks Guys
Scottie

 

[ratracer]

Re: 9.9 Evinrude Help?

You've got a 1975 model.

Points are under the flywheel. IMO your best bet is to start off by buying a reprint of the OEM service manual from kencook.com, it's not that expensive. It'll do a much better job of explaining to you what is what, where everything is, and how to repair & replace things than the more generic 3rd party manuals.

Most Evinrude/Johnson parts are still easy to find from retailers including our gracious host right here at iboats.com, else google is your friend.

 

[HighTrim]

Re: 9.9 Evinrude Help?

You can also try ebay for an OEM Service Manual.

The following is from the CDI Troubleshooting Guide, and should help with the no spark issue.

NO SPARK ON EITHER CYLINDER:

1. Disconnect the black yellow stop wire and retest. If the engine's ignition has spark, the stop circuit has a fault-check the key switch, harness and shift switch.
2. Check the stator resistance. You should read approximately 500 ohms from the brown wire to engine ground.
3. Check the DVA output from the stator. You should have a reading of at least 150V or more from the brown wire to engine ground (while connected to the pack).
4. Check the timer base?s resistance from the black/white wire to the white/black wire. Reading should be 10-20 ohms (or 30-40 ohms for CDI Electronics 133-0875K1). Note: The original factory specifications was 8-14 ohms, this was changed around the mid 1970?s in response to the change in SCR?s triggering requirements.
5. Check the DVA output from the timer base. A reading of at least 0.5V or more from the black/white wire to the white/black (while connected to the pack) is needed to fire the pack. If the output is low, you may try to reset the air gap between the timer base sensor and the triggering magnet.
a. Loosen the two mounting screws on the sensor and the nut located in the epoxy on the outside of the heat shield of the timer base.
b. Slide the sensor in toward the crankshaft approximately 0.005? at a time.
c. Coat the face of the sensor with machinists bluing or equivalent.
d. Install the flywheel according to the service manual and crank the engine over.
e. Remove the flywheel and check to see if the trigging magnet struck the sensor face.
f. If the ignition fired, finger tight the nut on the outside of the heat shield and coat it with RTV.
f. If still no fire, slide the sensor in another 0.005? and repeat steps c through f.
g. Check the DVA voltage on each trigger wire to engine ground. You should have a reading of at least 150V or more from the black/white wire and the white/black wire to engine ground (while connected to the pack). If the reading is low, disconnect the trigger wires from the pack and recheck the terminals on the pack. If the voltage jumps up to an acceptable reading, the timer base may have a problem in it?s internal wiring (A thin spot in the insulation on one wire).
7. Check the cranking RPM. A cranking speed of less than 250-RPM will not allow the system to spark properly.


The link below I find useful for the 9.9s as well.

http://www.wisnersinc.com/Fishing Information/Fishinginfo_main.html