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  1. M

    Help with SN lookup- Canadian model

    Hey guys- recently fixed this motor for a friend- i did find parts but it's hard to look up as it doesn't fit into us serial number lookup charts- it came up as a Belgian made engine- same as my Canadian made 18hp merc did when i was researching it. I'm hoping to find the year of the motor-...
  2. M

    Am I missing something

    Hey guys- been here for 5 years at least a few times a summer I guess, what's happened? Used to be you would ask a question in the repair forum and you'd have 10 answers in 30 mins. Is everyone out boating? Probably, just my dumb ass tryna fix a boat this time of year, lol. Where have all the...
  3. M

    89 Mariner 45HP- won't go over 2K rpm in water

    Hey Guys- haven't even laid eyes on this motor yet so can't give you a serial number but I'm hoping for a starting point. it's an 89 Mariner 4 cylinder 2 stroke with oil injection- the owner tells me it has flat plugs(no ground strap to adjust gap) which i wasn't even aware was a thing until he...
  4. M

    4.3 overheating below 2000rpm

    Hey guys, got a new problem as of late with my friends boat. seems to be overheating or at the very least temperature begins to quickly climb when boat is at idle. Anywhere from idle to 2000rpm actually. runs between 140 and 160, lets say 150 for arguments sake, all day until you back off the...
  5. M

    4.3 alternator belt size

    hey guys, working on MERCRUISER - (4.3LX H.P. (1992) Serial No: 0D810403 Model No: 443L1002S Parts Catalog No: 90-822454 92. with all that info i still cant find the right or even any alternator belts for this motor. i can't measure right now- can anyone help- its a 2 v-belt config- one for...
  6. M

    Damaged trim switch on throttle

    is there anyway it can be replaced or would the whole throttle handle need to be replaced. the switch is no longer there, someone removed it because the trim up wasn't working, it was the up solenoid, i wired in a toggle switch to serve the same function but would like to replace the switch if...
  7. M

    missing skeg on alpha one...thoughts?

    hey guys. so after bringing my friends boat back to life after a partial submersion in rain water which took out his starter, alternator, bilge blower and taking care of a few other things including a new 4 blade prop, he decided to take a few of us out for a day of boating. had a blast, boat...
  8. M

    92 4.3 lx should have a warning buzzer right?

    hey guys, last question on this boat i think. there should be a warning buzzer when i turn the key on right? from reading alot of posts i think there should be a buzzer that shuts off when started and will sound if oil pressure drops or if temp goes too high. is this right? or does it depend on...
  9. M

    4.3 merc oil pressure switch replacement

    Hey guys, i'll be replacing the oil pressure switch in my friends boat to finally get everything working right. Nothing special i need to know right? doing an oil change so i figured i'd replace it when the oil is out, screw old one out and new one in right? just use a wrench? Thanks for the...
  10. M

    mercruiser 4.3 serial# lookup

    Hey guys, can anyone help id this engine- 0D780403 i tried to find a lookup but failed. need to know what type of oil, pn for oil filter and oil pressure switch. thanks guys. it's been narrowed down to a gen II as it has fan belts not a serpentine setup if that helps.
  11. M

    4.3 belt configurations

    Hi guys- been working on what i've been told is a 96 4.3L. been at it long enough that i should have a serial but sadly, i don't. here's my issue- i started looking for a replacement alternator for it going by engine size and year and everything points to an alternator that uses a wider...
  12. M

    Electrical issues- dead gauges blowing 20A fuse-solved!

    Hey all, so after ressolving my starter and fuel pump issues(carbed 1996 4.3 merc won't shut off with key), i started troubleshooting his non functioning trim gauge. The gauge had worked before the partial submersion of his engine. it now reads full up all the time which i believe means there's...
  13. M

    carbed 1996 4.3 merc won't shut off with key- fuel pump runs continously

    hey guys, having some issues bringing this engine back to life. Heres the background info- engine was partially submerged in rain water due to plug being left in and battery removed(this isn't my boat, a friends). I replaced the up trim solenoid for him last year but never got a chance to do...
  14. M

    61 Evinrude 40HP- no power/ burns tons of gas

    Hey guys- just got my newly acquired 61 Big Twin 40 HP(has less than 20hours apparently) onto my boat and into the water. Was expecting big things from it but was disappointed. maybe 7 mph at full throttle- less than my 18HP merc would do on this boat and that thing had problems. I figured, ok...
  15. M

    New to me motor

    Hey guys, picked up what I hope is a great find. from what i gather, theres lots around but i think this ones a bit different. Model 35022- 1961 40HP evinrude. the thing is, from what i'm told, its got less than 15 hours on it. It starts and runs ok in the bucket, havent had a chance to get out...
  16. M

    Old Cable steering setup- need help

    Hey guys- i have an older 14ft fiberglass boat. I changed the engine today and one of the steering cables broke on me. :facepalm: Its not really a great setup- im thinking its whats referred to as a pull pull setup. My steering wheels has what ressembles 2 pulleys at the end under the dash. one...
  17. M

    Advice needed!

    Hey guys, looking at a new to me boat, but i need some questions answered before I think about buying it. From what i know, and this might not be exactly accurate, its a 79 sunray fiberglass hull- 18ft with, and this i know, a model 400 3.0l OMC engine. heres the thing- i'm told it will run all...
  18. M

    need help from mechanics and Supreme Mariners

    Hey guys, got a frankenmerc here- thought it was a 25hp from 1981, turns out it was an 18 wearing a 25 cowl. Apparently, the 18, 20 and 25 from 80-82 i think, were all the same motor with the exception of the main jet in the carb and the tuning/exhaust pipe in the driveshaft housing. So, it...
  19. M

    older merc 25- bleed hoses

    Hey guys, this is probably a silly question, but here goes, directly below my carb, i have 2 thin rubber lines that run to each cylinder on the intake side picture here - http://1manual.com/Mercury%20manuals/Service%20Manual%20PDFs/TwoStroke/826883r2/4.pdf click on bleed system on left Do...
  20. M

    loss of power after 5 mins

    Hey guys, got an 81 merc 25. Ive been working on it since I got it and its getting better and better. Most recently replaced the stator and saw a big jump in performance. What happens now has me confused though. when I 1st start it, i get half power, max speed 10mph not even on plane. If I shut...
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