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I need to remove and re-install the CDI box for a 1994 Yamaha Wave Runner III. I don't know what holds it in place and what to do to remove it from the mounts.

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  • Motorcycles Master
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The large elec box is held by 4x bolts , once off place towards engine and there are 10x or so screws holding back plate on , remove and cdi inside !

Posted on Jan 03, 2014

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Posted on Jan 02, 2017

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SOURCE: 83 yamaha tt600e no spark

The CDI unit on the 83 model (TT600) is located under the fuel tank and suffers from heat
exposure.The solution is to get specialist help to open up the sealed CDI unit and repair/
replace internal connections (which are readily available electronic components)
When you re-install it put some heat shielding material there to protect it and this
will be OK as repair will utilise stronger parts,I think.
Later models have the CDI unit moved to the head-stem area.

(this info from a Non-mechanic who remembers what was done to his TT in Australia, many years

Posted on Jun 12, 2009

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SOURCE: 85 yamaha virago xv1000 are the coils & cdi igntor box interchang


Posted on Jun 22, 2009

  • 8 Answers

SOURCE: I have a 1985 xv700 virago. one of my plugs are

follow the plug wire back to the coil and see if there are any breaks, if not might switch coil with the other one and see if the other plug now misfires, if so replace the coil, most cdi problems are not intermittent, typically they either work, or they dont.

Posted on Jul 05, 2009

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Help with 92 waverunner 650 no spark issue

Hi, Banjomaniac and the usual suspects are:
1. Fouled spark plugs.
2. Severely discharged or a damaged battery, should have 12.5 volts or better and be able to pass a load test if necessary.
3. Check battery terminals for damage or corrosion, check the battery cables at "BOTH" ends for loose, corroded, or broken connectors, "INSIDE" and outside the cable harness, perform connector wiggle test and check cables with an ohmmeter if necessary.
4. Loose connection at ignition coil or plug between ignition sensor and module.
5. Spark plug cables in bad condition, shorting / leaking, spark plug cable connections loose.
6. Faulty ignition coil or electronic control module or CDI box.
7. Faulty CKP, CMP, or BAS sensor.
8. Faulty ignition switch.
9. Tilt sensor needs a reset.
10. Security alarm failing to disarm needs reset
For more information about your issue and valuable "FREE" downloads that you will need please click on the links below. Good luck and have a nice day.
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My 1992 yamaha waverunner iii 650 is taking on water?

I know this sounds obvious, but make sure the plugs are screwed in.
usually 2 of them at the back of the waverunner.
i know i forgot to put them in one day and by the time i parked the truck & trailer it took on so much water the motor was half submerged.
Hurried and pull the truck back and got it out and let her drain iout the plugs, then fired it up.

anyhow, if thats not it then your hull must be cracked and leaking in, take seat off at the ramp and see if you can see where its coming from, if you don't notice anything, then its coming in through
the ports at the top of the wave runner under the steering assembley housing, those tubes are made to direct the water to the bottom, if you have an auto matic bilge pump, make sure that is working or it won't pump out the water like it is supposed to.
hope that helps
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