Recent content by BB63QM

  1. BB63QM

    Power Trim (70s Model 1)

    I am converting from manual trim assist to power trim. I have managed to find all the OEM parts (pistons, brackets, hoses, pump, 3-button, wire run, limit switch, etc), but am lacking a diagram or better yet, a set of pictures, that shows how the wiring hooks up. Specifically and for instance...
  2. BB63QM

    First Successful Outing On The Lake

    My project boat went live this weekend (Glaspar 150 Cutlass with mid-70’s Mercury 850 Thunderbolt) Problems: 1. Could not find reverse. Back on land, discovered that the shift cable was coming up short, so spun the adjustment once and now shifts fine (manually, on land) 2. Shifting hard to...
  3. BB63QM

    Power Tilt Conversion

    Thanks. Those units are seem few and far between…and pricey when found. 1. Is there a self-contained option (designed for other model but will work for mine). I’ve seen lots of units where the pump and reservoir are incorporated, but it’s unclear what else I would need to buy. Most of the...
  4. BB63QM

    Throttle Cable Stretched??

    Update: cable not stretched, just out of adjustment and (in picture) at a point in movement where it looked different. New cable same…so going back. All adjusted, ran great in the lake this weekend, except that I under adjusted the shift cable and came up short of reverse (worked on muffs...
  5. BB63QM

    Power Tilt Conversion

    Thanks. If buying a used system from one of the engines described, do I just need the life hardware and switch/cable, or do I need a special yea some mount and/or tilt mount (neither none of which are sold with most salvaged systems)
  6. BB63QM

    Throttle Cable Stretched??

  7. BB63QM

    Throttle Cable Stretched??

    75 Mercury 850 Symptom A: throttle was not returning to idle (distributor not resting on Idle Stop at idle and if side throttle engaged, RPM went up but then not down when returned flat. Symptom B: the unthreaded brass section of the throttle cable is more than that of the shift cable...
  8. BB63QM

    Power Tilt Conversion

    I have a 1976 Mercury 850 with manual lift assist tilt. I want to switch to hydraulic tilt/trim. According to the manual, there is a bolt on system (which replaced the port/stbd assist pistons with hydraulic pistons, and adds a pump and reservoir and hoses). Questions: 1. Does anyone know the...
  9. BB63QM

    Puzzled about Shifting

    850 Thunderbolt. Solution: 1. remove power head ((two ladders, a 4x6 timber and a cargo shackle lifting from a life eye screwed into the flywheel ($9 on Amazon, with puller) —disconnect, main wire bundle at cowl, throttle/shift cables, the nut between the shaft shaft arm and shift slide arm...
  10. BB63QM

    Remove Driveshaft Housing without Lifting Powerhead?

    850 Thunderbolt I ended up lifting thrower head (only way to get to the shift shaft (tip level on the shaft shaft is pinned…bottom is jammed on and cannot be removed without full access (for heat, tapping to remove)… Note for fire: Oder the gasket ASAP and make sure you order the right one...
  11. BB63QM

    Stator Wires sheared

    The stator in my backup motor isn’t much better. Not sheared off, but corroded and brittle. Replacement stators from CDI don’t have all the black shielding…could I cut into that to get a better bite in the wires for a tap? Cheapest replacement is $100…most $200-400…just looking to save a...
  12. BB63QM

    Stator Wires sheared

  13. BB63QM

    Stator Wires sheared

    My Merc 850 (70’s) had a wire shear off at the stator and the other stator wire or nearly off and old. The wires come from the rectifier and disappear into a grommet buried in black stuff at the alternator stator under the flywheel. The new stator wires (yellow with stripe) from the...
  14. BB63QM

    Remove Driveshaft Housing without Lifting Powerhead?

    I think the answer is NO, but I thought I'd ask. if i undid the 8 nuts holding the housing to the powerhead (or vice versa), can the house fall away and the power hear stay up, or is the housing all that is holding the powerhead up? Just trying to avoid hoisting the powerhead (don't have a...
  15. BB63QM

    Puzzled about Shifting

    Ok. While I’m waiting for the postman to bring me a new detent roller for the MerControl (damned if I didn’t find (hand and knees metal detector in thorny bush)…then it flew away again…direction unknown), I did some more tests Good news: shifts well at the LU Good news: MerControl seems right...
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