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  1. J

    1987 Force 125 hp won't start

    No Title You should have the flat bottom gapless type if you have the correct BUHX. Like this one.
  2. J

    Finally pulled my head..top cylinder ate a ring

    No Title Here's one I used before: Just make sure the fuel oil mix is 25:1 throughout the break in period.
  3. J

    1993 Force 150 flywheel - need answer quickly

    No Title Looking at the flywheel, it looks like the ring gear is welded on four spots thus permanently attaching it to the flywheel. Or could this be a mod that was done by the owner? The pictured flywheel looks like it's brand new so I do not think this was a mod. Did you check your flywheel...
  4. J

    96 Force 120 starting issue

    No Title Just to make sure we are on the same channel here's a pic of a starter motor with the stop nut, stop ring and spring. Note this is an OEM (1988) unit that is almost 27 yrs old and still kicking strong. And yes, I already replaced the brushes.
  5. J

    Finally pulled my head..top cylinder ate a ring

    No Title I believe for your motor the std piston is 3.375" bore with a 0.010" increment in oversized pistons up to 0.040" or 3.415" bore. The stamping on the piston crown indicates if the piston is oversized or not. Standard size is usually indicated by number "1" and "2" indicates an oversized...
  6. J

    1985 Force 85 high altitude carb jet question

    No Title Based on the description of the problem you just posted, I would try to keep the idle screw at 1 turn out on all three or even at 1 1/8 out. This is the standard setting anyways from the factory. You will keep this setting until you find out what is causing the hard starting when...
  7. J

    Prop Question

    No Title Here's what typical shift adjustment nuts looks like. As Mitz mentioned, you do a 1/4 or a 1/2 turn at a time to do the adjustment after you made sure you marked it first where you are starting from. For forward biasing, you need to the rod to push down a little bit more, hence...
  8. J

    1990 90HP Force Outboard starting issues

    No Title First I want to make sure we are on the same page on the type of ignition system on your motor. The 1990-90HP's came in two versions of ignition system, the Prestolite and the other is Thunderbolt. The T-bolt has a switchbox while the Prestolite has the CD modules (2 of them). In your...
  9. J

    Force 85 crawls at 10 knots WOT and has 95 psi compression

    No Title Here's a specs sheet indicating the recommended spark plugs and other characteristics of the 85 and 125 HP. If you can post a pic of the spec sheet or reference about the use of the QL86C, it will be much appreciated.
  10. J

    Dreaded 1990 50hp Force OB

    No Title You are checking on the right wires and you have the "D" type wiring diagram for the 50 HP (bottom one). Anyways, here's a diagram. The resistance reading should be taken between the brn/yel and brn/blu wires and it should be 680~800 ohms. However, I see a black ground wire. So if you...
  11. J

    125 hp Force outboard no spark going to #1 and #2 spark plugs?

    No Title One thing good about electrical problems especially with this Prestolite system, is you have identical parts you can switch around to troubleshoot without having to buy expensive spare parts. With that in mind, you still need to approach the problem carefully, logically and always...
  12. J

    Force 125 1987 - New to me - Iginition issue

    No Title Here's a wiring diagram of the motor and T&T to give you a reference. As for not having sparks, you will need to disconnect the white wire coming off both CD modules from the engine terminal block. This wire is to shunt the CD modules to ground to stop the motor (note on the ignition...
  13. J

    test wheel

    No Title The static timing procedures are still the same with your 2 cyl motor. Yes, by cranking the engine without actually making it ran with the throttles in WOT position or the control lever in full fwd position, this simulates WOT speed without actually running at WOT speed. This is...
  14. J

    No fast idle/Low compression on 1 & 3

    No Title The ding on the two pistons is actually a result of broken damaged rings (got caught on the port lip). I'm not really sure about the little hole on #2 or if it is even a hole or could be a scar. Using a fine wire does it go through the piston? The next step is to assess the cylinders...
  15. J

    Need help Please on my 86 force 125 tilt/trim

    No Title Here's an exploded view. As for the torque I just use the standard SAE-5 grade 1/4"-20 torque which is 8 Ft-lbs or 96 inch-lbs.
  16. J

    Back agina with the 1984 125

    No Title No, the ignition switch has to be off. Here's a wiring diagram. From the color description it seems you are referring to the trigger wires as mentioned by PNW. If what you switched are the trigger wires (wh/grn & red and the other set of grn & orange) and you got fire on #3 & #4 then...
  17. J

    88 force 85hp trim drop help.

    No Title I think this is a very informative thread for tilt and trims. I would like to include the leak down test procedures for the typical 3-wire Tilt and Trim system with shock absorber system and request the moderators to put it up with the sticky posts. Leak down test procedure: The...
  18. J

    Need help Please on my 86 force 125 tilt/trim

    No Title Most leak downs are either caused by worn out o-rings on the tilt cylinder or worn out o-rings on the spool valves and shuttle valves. You should review the post PNW posted and also the leak down test I've posted from other previous threads. If you cannot locate the leak down test, let...
  19. J

    Need help Please on my 86 force 125 tilt/trim

    No Title OK, then maybe this will help.
  20. J

    1992 Bayliner Carpi Steering Locked Up (Newbie)

    No Title If your steering is like the pic below, start by unscrewing the cable nut from the tube and then shoot WD-40 on the tube and cable. While still disconnected, try the steering whee to see if it will turn easily. If it does, the problem is with the tube (as is always the case)...
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