Re: Force 125 no power
I am going through a similar problem. Check out my thread, I have have some pretty good advice from people.
http://forums.iboats.com/showthread.php?t=481933
Another guy with a similar problem rebuilt his whole ignitiion system to find that his flame arrestor was stopped up. Not sure if that is your problem but worth pointing out. People always say check/replace the fuel pump diaphgram, they are like $5. One guy said that the rectifier fixed his problems (which is odd but he claims it worked), they are less than $5 at Radio Shack. CDI boxes could be bad. I just replaced mine at $200 each, but I am still having power issues. I am going to run some SeaFoam this weekend to do a de-carb. From what I read, people swear by this stuff. Other people use Quicksilver Power Tune for the de-carb as a shock. I figured its worth a try...Good luck!
I read through your entire thread you linked and surprised after all those efforts you are still on the same dilemma. Personally, I would have done the following (in general sequence).
1. Verify timing is correct 32 degree BTDC
2. Visual check the reeds. This mean removing the carbs and adapters and dismounting the vee-block and physically hold the reeds against a strong light.
3. Dismount flywheel and visually check both trigger and stator wires for cracks and grounding or broken wires
4. Verify sparks in each plug using see through spark tester.
5. Verify throttle valves on both carbs goes horizontal when control handle is in full power position (all the way forward)
6. Idle mixture settings on each carb should be 1 turn out from lightly seated
7. Verify the timing tower moves with the carb throttle valves when control handle is moved
If this does not improve engine performance, check the fuel recovery or re-circulation system make sure the cylinder port cover reed valves and check valves are still working.
