Recent content by gpsguru

  1. G

    Johnson 70 (1997 Remote) Idle screw setting

    Johnson 70 remote ? 1997?????????.. Does anybody know the correct initial position for the idle mixture adjustment screws ? The manual I have says 2 and threequarter turns in the spec, but the procedure section states 3 and a half turns ? :confused: I have fitted a replacement powerhead with...
  2. G

    Thanks ..................

    Just wanted to say ?Thanks Guys? for all the info and answers to my questions over the last 3 months. Special thanks must go to Joe Reeves for the Timing set up info ??????. That makes life really easy and works like a dream ?????. It beats the hell out of sat on the transom at WOT with a...
  3. G

    Timing - 1997 Johnson 70

    Having now almost finished building up a replacement powerhead (1997 70 full remote), I need to sort out the timing. This http://forums.iboats.com/showthread.php?t=228183 from the secret files is excellent and pretty much is what I had considered doing. My engine calls for 18 BTDC at WOT and 4...
  4. G

    Johnson 70 (1997) Plug Question ?

    Been searching and reading about spark plugs on here today ????.. I think I have the answer , but can anybody confirm my understanding. Jonhson 70 (1997) ????.. I will use the boat for mostly in shore trolling with the occasional trip to about 5 miles out, so I guess I will need QL78YC plugs as...
  5. G

    Johnson 70 (1997) VRO

    I have recently bought (with the boat) a Johnson 70 (1997) , however, after maybe 7 hours it threw a con rod ! :mad: ??. Even though it was dealer serviced before my purchase :rolleyes:???I have spoken to the dealer but I would probably get more response from talking to a wall ! I have...
  6. G

    Johnson 70 Powerhead weight

    I have done some searching but cannot find the answer ........ Do any of you knowledgeable folk know the rough weight of a 1997 Johnson 70 powerhead ? I would like to lift it off by hand, but if it?s too heavy then I may have to use the mobile engine hoist at full extension to get the necessary...
  7. G

    Crankcase Taper Pin ?

    1997 Johnson 70 (3 cylinder) full remote. I have the powerhead off now and will be pulling the crankcase apart to take out the seized / broken up piston (No3). There is a whole section in the workshop manual about being mighty careful when removing the taper pin that aligns the crankcase...
  8. G

    Johnson 70 (1997) Seized.

    Since we have had this boat we have used it about 5 times with a total of maybe 6 hours running. TBH, much of the time it ran really sweet, however, yesterday we had an issue. We were coming in from about 5 miles out, when in the estuary approaches the engine suddenly sounded rough, slowed...
  9. G

    Johnson 70 (1997) Idle Adjustment

    Hello guys ????. I have used the search but cant find what I?m looking for. Here in the UK I have a 1997 Johnson 70 remote which power my 18ft motor cruiser. I cant give you anymore info about the engine as the serial number plate is missing (probably because the engine is ex RNLI), however...
See more
Top