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  1. J

    Motor dies then won't start

    Do you have a clear fuel filter after the fuel pump? If you do, was it still at least half full when the motor died? Or the primer bulb being collapsed. If fuel filter is at least half full and the primer bulb being not collapsed most likely the problem is in the ignition system. But before...
  2. J

    Force 50 HP. Rain got in key switch. Wires smoked. Now Cranks but No Spark.

    Some people had luck with standard JB Welds and epoxies. So give it a shot and hope it holds.
  3. J

    Force 50 HP. Rain got in key switch. Wires smoked. Now Cranks but No Spark.

    There was a post in here asking for the best glue for magnets. And one member actually post a glue for magnets used on Evinrude motors. You might want to search it.
  4. J

    Motor dies then won't start

    Try troubleshooting with muffs for cooling water on the driveway. First, get a small spray bottle and fill it halfway with fuel-oil mixture. You would need a second person to do the starting unless you have a remote starter. Remove the air cover from the carb. While cranking spray a mist of fuel...
  5. J

    force 120/125 40 over pistons Jet size

    The standard fuel jet sizes are as follow (sea level to 1500' elevation): Top Carb - 0.0937 Bottom Carb - 0.101 This with the standard issue carbs which are all the same for the 87~89 125 HP.
  6. J

    Force 50 HP. Rain got in key switch. Wires smoked. Now Cranks but No Spark.

    The alternator windings in the stator usually do not produce sensible voltage at cranking speed. In fact, it takes around 2K rpm for the charging voltage to get started. You can try but I doubt you'll see anything on the DVM.
  7. J

    1 ohm resistance across 1987 50HP charging coil. Ok?

    Actually, the alternator coil resistance is equal to or less than 1 ohm (0.5-1.0 ohm depending on temp). The wires on these coils are larger hence the resistance is very low. So yes, your reading is correct and within specs.
  8. J

    Is this article true? I have had pretty good luck with Force motors.

    Well, Force engines are simply designed and easy to maintain as long as you have gained the experience and knowledge to do so. For modern mechanics, Force/Chrysler engines are a nightmare because Force/Chrysler are full manual with very little electronics except maybe for the CD Modules and...
  9. J

    force 120/125 40 over pistons Jet size

    At 650' above sea level all you need is the standard jets. Over boring cylinders does not require changes in carb jet specs. Sure there will be more air passing through the carbs because of the over sized bores, but that is also metered by the carbs. Meaning with more air passing through the...
  10. J

    1987 Force 125 shudder/bucking at fast idle/mid RPM

    You are referring to the recirc reeds from the fuel recirc system. No there shouldn't be any gap. If there is then it is time to replace it. Check also make sure it still opens and closes. Stiff reeds can also be a problem due to crud build up.
  11. J

    Throttle/Shift Cables

    I do not think so as long as you know for sure the old and new cables are of the same length and installing the connectors at the same length also. If any it would just be a minor adjustment which you should start with the cables first instead of the shift shaft.
  12. J

    0.25 Volts AC from stator. But ohms out ok. What to check?

    You are correct that you should at least have some kind of voltage readings even without a DVA adapter on a regular multimeter. However, remember the stated 200 VAC is a peak reading (which you can achieve with a DVA) and not the RMS. But for sure you should read way more than 0.25 VAC. So there...
  13. J

    1991 Force 150 hp

    Another thing to consider when replacing LU is the existing gear ratio. Your '91-150HP uses 1.93:1 ratio. The 84-89 125's uses the 1.73:1 ratio while the new 1989-125HP uses the same 1.93:1 ratio. The 85's uses the 2.01:1 ratio.
  14. J

    0.25 Volts AC from stator. But ohms out ok. What to check?

    With good resistance reading it could also be broken strands on the blue leads connecting to the windings. Eventually, I believe you would have to pull the flywheel and do a systematic inspection of both the magnets, trigger and stator. DO NOT USE THE TWO OR THREE CLAWS/ARMS GEAR PULLER as these...
  15. J

    0.25 Volts AC from stator. But ohms out ok. What to check?

    In one of your previous post you stated you measured 300VAC on the stator. So what changed? Or it could be that you initially measured with a hand held os-scope and this time measuring with a regular DVM? Measuring voltage on the stator and trigger requires a DVA adapter to get the correct...
  16. J

    1987 Force 125 shudder/bucking at fast idle/mid RPM

    Well, if the carbs are 1985, then for your elevation of 1200 the main jet is supposed to be 0.094 (0.0937 to be exact). Have you tried this jet size to see if it makes a difference? And also since your elevation is not that far from 1500 ft, a jet size of 0.092 might also work. Although, base on...
  17. J

    1987 Force 125 shudder/bucking at fast idle/mid RPM

    I see. I had an 88 and presumed it has the same type of fuel recirc. Anyways, follow Jerry with his recommendation. The plugs fouling on bottom cylinders like yours is a perfect example of a clog or malfunctioning fuel recirc system. You would have to trace it all to make sure. In fact, it would...
  18. J

    1987 Force 125 shudder/bucking at fast idle/mid RPM

    Be mindful of the elbows, T's and straight tube connectors on each recirc hose. The T and straight connectors do have check valves and sometimes the cause is not clogged but stuck check valve ball. Carb/Choke cleaner can sometimes unstuck the ball valves. Test by blowing through it to make sure...
  19. J

    Fresh bore and 125 psi on one cylinder??

    Congrats. Remember after the break in period you will need to check the head torque again.
  20. J

    Erratic Timing Light Reading on '96 Force 120

    During starting, the starter pinion is designed to disengage itself as soon as the flywheel starts rotating faster than the starter rotation. And normally this is due to the fact that the motor has already fired up and started running. However, there are instances when the flywheel will kick a...
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