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Recent content by CCH

  1. C

    97 25hp fuel or timing issue

    Beginning to.think it is maybe a stater or mag issue just unsure how to test that. Seeing it works great in idle even at max throttle that it allows.
  2. C

    97 25hp fuel or timing issue

    Hi.prettty sure the 20.and 25 are almost the same motor parts seem.to be the same most of the time. It is a weird problem.
  3. C

    97 25hp fuel or timing issue

    Not to jump on board we have rebuilt our 20 hp getting 130 and 140 compression. Carb rebuilt. Tan spark plugs after running for 20+ minutes. Out of gear it revs great. Put it into gear runs great till you get 3/4 throttle then it starts to run rough and will dies. Timing is set to spec also...
  4. C

    97 25hp fuel or timing issue

    Hope someone answers i have the same issue with a 20hp 1991. Runs great but at 1/2 throttle it bogs. I have done everything but no success. My timing is 5 at idle and 20 at wide open using a gun.
  5. C

    Low compression top piston

    Wanted to add when assemblied motor start fine but when in the water it boggs at about 1/2 throttle big time. But till then runs great. Big spread on the compression 90 to 120
  6. C

    Low compression top piston

    Hello all I have a 1991 20hp motor I am getting 90 psi on the top and 120 on the bottom. Here is what I have done so far. Both cylinder walls look great no gouges or major scratches. New pistons and rings and bearings all new and ring gaps are in spec. Still get low comp on top I am at a loss...
  7. C

    Timing

    Hello I have a Yamaha 20hp 20MSHP that I have a issue with. It starts and idles no problem but when the timing starts to advance it dies. I have noticed that the magnets are pulling the timing ahead and not the throttle. If I turn the flywheel by hand the timing moves to max everything the...
  8. C

    Looking for help identifying Mariner

    Hello I have a Mariner Striker XL 25hp. the tag only has one number on it 7000120. Can anyone tell me what year this is, looking for a manual for it. Thanks
  9. C

    Maybe over thinking

    Took the 60 apart. Looks like they nay have been upside down. Photo is the new install position looking down from the top. There are now two ports on the exhaust side. No markings on the pistons to indicate exhaust side. Caught a video of a rebuild showing the two ports up. Putting it back...
  10. C

    Maybe over thinking

    So took the head off just to show the pistons. I will take the exhaust side just to ensure they are the right directions. Also need to helical my spark ugs as they only tighten hand tight more good news. By the way no damage to any ports which should tell me the pistons are in correctly but...
  11. C

    Maybe over thinking

    Hello Raceone, I put the piston in my self and I placed them in just like the old ones where, there were no arrows on the heads just numbers on both sides of the head. So I assumed the arrow side was the up side of the number. When they are placed the upside of the number is facing the top of...
  12. C

    Maybe over thinking

    Hi the company that did the work is well know for excellent work and trust the did a great job. Ring clearance I believe when I measured was inspec .011if I recall. Pistons were installed correctly if fact checked a few times. So before I got this message I put a old prop on 12" diameter again...
  13. C

    Johnson carb information

    Does anyone know what inforis on these carb tags 60hp 1998 johnson
  14. C

    Maybe over thinking

    Hi all, so after rebuilding my motor and finding a few small items after the rebuild. All seems to be working well. Did the link and sync and the Joe Reeves timing to 15. Now it is a 60 hp vrt with mixed fuel. Starts great but I can still only get 3000 rpm maybe a crappy amazon tach. It does...
  15. C

    Boggy

    Hello all, just finished a rebuild of my 1988 60hp vro. Vro removed. So after new cylinder walls and piston,rings all was looking good. Also new water pump. I have a issue not sure what is causing it. Motor starts great, idles fine, put it in gear all works move throttle to first point get...
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