Need Help With Force Motor

[brianvolt7]

Re: Need Help With Force Motor

I am going out tonight to try the TDC technique. On a good note with the brand new plugs I got it to start twice, it ran each time for about 4 or 5 seconds. The second time I thought it was going to keep running but it died.

 

[brianvolt7]

Re: Need Help With Force Motor

OK, so I did the TDC technique. There were 4 markings on the flywheel. Three together and one by itself. When at TDC the single line on the flywheel was about 1/8 inch left of the motor mark when looking at the front of the motor.

 

[PaulO]

Re: Need Help With Force Motor

My flywheel has divisions from -4 to 32? with numbers every 4 divisions from 32 28 24 20 16 12 8 4 0 -4 in this order. It increases to the left. The sole mark may be TDC??? Put a protractor and string with the axis over the crank centre and the sole mark as the origin and pull the string to those other marks. They may represent 28 30 and 32?

When it was running did you put it in gear and increase throttle?

 

[brianvolt7]

Re: Need Help With Force Motor

Using this method, with the base line of zero degree on the single line the other three were at 20, 25 and 30. Do you think the timing is correct? it apears to be less than 5 degrees off of center.

 

[pnwboat]

Re: Need Help With Force Motor

The single line by itself is TDC. The three marks together are (from left to right), 32, 30, 28 degrees before TDC.

 

[brianvolt7]

Re: Need Help With Force Motor

What are your thought for moving forward? It seams to be almost ready to start.

 

[cannonford57]

Re: Need Help With Force Motor

brianvolt,what has happened is the carbs have been sitting and "varnished"up.the gas in the carbs evaporates and leaves the oil residue that turns into varnish,sludge,crap,stuff that clogs up ur carbs.....whatever ya want to call it.your problem isnt in the idle jet your gonna blow air down but in the bowl,jets area...they gotta come off,disassembled,soaked....kits perferably,your talking about passage ways not much bigger than a couple hairs in some cases...that should fix all ur troubles...and i did stay at a holiday inn last nite....

 

[cannonford57]

Re: Need Help With Force Motor

and its just my opinion,i could been entirely wrong

 

[pnwboat]

Re: Need Help With Force Motor

Brianvolt7, just to review a few things.

1. You mentioned that at one point you were able to get it to run for a short period of time if you squirted a small amount of gas into each cylinder plus some starting fluid?? Have you tried it without the starting fluid?

2. You also mentioned that you're seeing gas come out of the carburetors when you choke it while starting. This is an indication that you are choking too much. You should only have to choke for 2 to maybe 3 seconds at the most. Anything more than that will flood the motor preventing it from starting. Open the throttle plates all the way when you try to start and minimize the use of the choke. See what happens.

 

[brianvolt7]

Re: Need Help With Force Motor

I will try using this method to start tonight, been slammed at work and no extra time for the boat last night.

 

[brianvolt7]

Re: Need Help With Force Motor

pnwboat,

Last night I attempted to start the motor with using the method you recommended.
Carbs wide open
Small amount of gas into the cylinders via the plug opening
No starter fluid
Limited choke

I got one pop, the first time I cranked it. After that the motor didn?t seem like it wanted to do anything.

I then tried some starter fluid, and same result no pops or gurgles like it was trying to start. This was strange because I typically get a gurgling sound like it is trying to start. I am going to try again this morning when it gets light out.

 

[pnwboat]

Re: Need Help With Force Motor

Not sure Brianvolt7, but I'm beginning to suspect you have an ignition problem. Do you have a multi-meter to take some resistance readings?

 

[brianvolt7]

Re: Need Help With Force Motor

Yes, I can do that. What should I look for?

 

[pnwboat]

Re: Need Help With Force Motor

Do you have a terminal block on the starter side of your motor? If so, the third
position from the top should have either white wires or black and yellow wires. This is the kill circuit for the ignition system. Measure resistance between the third terminal from the top to ground (engine block) with the ignition key in the OFF position. You should read continuity. A dead short or very low OHMs. Measure again with the key in the ON position. You should read no continuity, open circuit. If this checks out, we can move on to the stator.

 

[brianvolt7]

Re: Need Help With Force Motor

Dead short to ground when key is off, wide open when key is on.

 

[pnwboat]

Re: Need Help With Force Motor

OK, can you look under the flywheel and see what color the wires are that coming from the stator? There should be some wires that come from the trigger assy. that are all bundled together. Right now we just need to look at the stator. Also make sure the strip magnet attached to the inner circumference of the flywheel hasn't come loose and is stuck to the stator.

 

[brianvolt7]

Re: Need Help With Force Motor

Two solid yellows and two solid blues as well as two green with yellow stripe from rectifier. Where would I find the strip magnet?

 

[pnwboat]

Re: Need Help With Force Motor

Here are some pictures. I'm pointing at the parting line where the two ends of the magnetic strip meet. It almost looks as though it's part of the flywheel itself, but it is actually epoxied to it.

 

[pnwboat]

Re: Need Help With Force Motor

Stator windings should read 680 - 850 ohms. The stator wires go to the four left most terminals on the 12 position terminal block. For trouble-shooting purposes, lets say the terminals are 1 - 12 starting with the left most position.

1. #1 position should have a Yellow stator wire on it. Disconnect it and put you meter on ohms and put one lead on it. Put the other lead on position two (it's still connected) which should be a blue stator wire. You should read between 680 - 850 OHMs. Re-connect the Yellow wire on position 1.

2. #3 position should also have a Yellow stator wire. Disconnect it and measure between it and position 4 (Blue wire) and you should read 680- 850 OHMs. Reconnect the Yellow wire on position 3.

Here is a picture of the actual stator. Notice it has 20 coils or poles around the perimeter. This is a 20 pole stator.

 

[brianvolt7]

Re: Need Help With Force Motor

Here are the results:
Yellow #1 to Blue # 2 is 721 ohms
Yellow #3 to Blue #4 is 727 ohms

Appears to be within range. The magnet is fully intact as well.