force 125 89. adjusting trigger

[shakazulu]

My force 125 was working good, not great, it ran max 30MPH with bayliner 19 feeet.
Last ride was cca 35 miles long on calm sea with 5 person onboard . It ran great till I came near the finish and lowered the throttle to idle. Then it just died. After that I tried to start again but it dind't. I realised that there is one small plastic piece broken near the flywheel that connects throttle+thing that goes under the flywheel. Sorry, I don't know the names of theese parts, you can see on photo. I fixed that with duck tape for the moment. Engine starts when I pull it to the right ( thing under flywheel) but runs rough and can not go fast like before, so now I think that I need to find best position for it. How can I solve this? I hope that ignition for cylinders is not messed up . If it is how to repair it?

When engine died I found out that battery is low on power, so it is not charging . Battery is good, I recharged it at car electric . This is second time in 30 days that I need to recharge it at car electric store.

One yellow wire is not connected to anything and I don't know why, it was standing like this when I bought the boat 2 months ago. What is it for? On scheme it says that it is for Start .

Theese are some basic information so I can start troubleshooting.

 

[shakazulu]

Re: force 125 89. throttle+electricity+not charging

Re: force 125 89. throttle+electricity+not charging

Now I found names for parts, It is broken plastic piece that connects Throttle timing shaft and trigger . When I connect it again on which position should the trigger need to be, how can this position be found? Thank you

 

[pnwboat]

Re: force 125 89. throttle+electricity+not charging

Re: force 125 89. throttle+electricity+not charging

That is your engine ignition timing adjustment. Link below indicates basic method for adjusting the ignition timing.

http://forums.iboats.com/showthread.php?t=482646&highlight=timing+adjustment

The charging system consists of the stator and the rectifier. 2 wires from the stator are Green/Yellow. They go to the rectifier. Rectifier is the small square item with 4 terminals and is located next to the starter. There is a black wire that runs from one of the starter mounting nuts to the negative terminal of the rectifier. You need a meter to measure the voltage out put of the rectifier and stator to see if they are working correctly. Here is a link to demonstrate testing of the rectifier.

http://www.youtube.com/watch?v=pAV14aj_DT0

http://www.youtube.com/watch?v=ThX0_E9x1mc

http://www.youtube.com/watch?v=R2ngCNezp8Q

 

[shakazulu]

Re: force 125 89. throttle+electricity+not charging

Re: force 125 89. throttle+electricity+not charging

Thank you for professional answer, I allready tried fixing timing. I think that I got the picture, and I tuned up the motor. Fixed the broken plastic piece and had to fix idle . I am not satsfied 100%, I got 25 MPH with one person onboard, I think that I need to get inductive lamp and fix timing. I hope that I can get 35 MPH when better tuned up.

I found where rectifier is, I will find a meter and measure it is it working. Can bad rectifier cause low RPM and low speed? What would happen if I disconnect it from power and see if boat goes better without it ?

 

[pnwboat]

Re: force 125 89. throttle+electricity+not charging

Re: force 125 89. throttle+electricity+not charging

Yes you can disconnect the rectifier without harm. Disconnect the two Green/Yellow wires and insulate the ends so they don't come into contact with anything or get caught in the spinning flywheel. A bad rectifier can cause problems with the ignition system resulting in low RPM and low speed.

 

[shakazulu]

Re: force 125 89. throttle+electricity+not charging

Re: force 125 89. throttle+electricity+not charging

Does this mean that if I disconnect rectifier and boat goes better, it means that rectifier is bad, and I need to replace it? I saw on theese video clips that there are maybe better solutions than installing original rectifier, what could theese solutions be? Thank you

 

[shakazulu]

Re: force 125 89. throttle+electricity+not charging

Re: force 125 89. throttle+electricity+not charging

I disconnected 2 yellow/green wires from rectifier, also purple one is also diconnected. I tried to see is the boat going better without rectifier and I can not tell difference. Now I want to connect the rectifier back but I forgot to take a photo of it connected. Is there a photo or scheme where to connect theese 3 wires on rectifier ? Thank you

 

[pnwboat]

Re: force 125 89. throttle+electricity+not charging

Re: force 125 89. throttle+electricity+not charging

You should have two empty connections on the rectifier from where you originally disconnected them. It doesn't matter which terminal the Green/Yellow wires are attached to. This is AC charging voltage from the stator so it doesn't matter. You can double check to be sure by looking at the markings on the rectifier. The Green/Yellow wires should be attached to the terminals marked with the following symbol ~ . The purple wire can also go on either terminal that the Green/Yellow wires are attached to, however, if your tachometer acts strange, connect it to the other terminal with the Green/Yellow wire.

 

[shakazulu]

Re: force 125 89. throttle+electricity+not charging

Re: force 125 89. throttle+electricity+not charging

I went yesterday to try, I connected rectifier again. I din't have inductive light lamp so I adjusted trigger only by hearing it but not on WOT .
I recorded a video so you pros can see it and tell me what do you think about it. It is on http://www.youtube.com/watch?v=krbjXEDKTII
So I am sure that timing is not correct, I need to adjust that although I am not sure 100% how to do it. Do I only adjust it on trigger screw or there is something else? When I tried first time WOT it went 26 MPH on gps, then it lost strength. I found a small orange wire fallen of on right side of motor. Very thin wire that is connected with a screw with another orange wire. I connected that and power came back. So probably one cylinder was off becase that wire . After half an hour another thin wire fell off ( green ), now other cylinder didn't work, I repaired that also. I can not believe that theese wires are just falling off. Now it goes 28 MPH on gps but struggles to plane. I am not sure is compression OK. I newer touched carbs settings, only idle screw and trigger screw. What do you think? Motor seems to work rough, it shakes pretty hard and makes big vibrations, again, proababyl beacuse of bad timing.
Could it be that theese wires fell off because of high current in them that burned them up ?

 

[BobList]

Re: force 125 89. throttle+electricity+not charging

Re: force 125 89. throttle+electricity+not charging

Check those wires where they attach to the U shaped terminal that goes under the screw. Use a razor blade to slice the inch long black shrink tube stamped with the number on it. ( at the end of the wire, attached to the U shaped connector). You might find a brittle, loose, even a broken wire under that little tube cover on the wire. And yes, a loose terminal can and will arc, causing burned, brittle, discolored wires. Just be sure to re-label the wires with the proper number that was on it.


Bob