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  1. C

    In-Line Fuel Filter Question

    Thanks for the reply Texmark. Update: I took both carbs off and cleaned them really well. There was water in bottom carb bowl. I believe I got a bad batch of gas at the station. I always go ethanol free, but I suppose you can't always eliminate every variable. I have thoroughly cleaned...
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    In-Line Fuel Filter Question

    Hey All, I'm working on an '87 Mariner 45hp (4 cyl) and have a question re: my in-line fuel filter. I've got an OEM filter and I typically remove my fuel line after use via quick disconnect from my tanks (just for safety purposes). Is it normal for the fuel filter to lose all the fuel in it...
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    '87 Mariner 45hp Loss of power past 1/2 throttle.....completely stumped

    I just wanted to post a follow-up to this thread b/c I know that step can sometimes be forgotten. Long story short, I bit the bullet and bought a used carb body for my lower one and cleaned it really good. I also adjusted the max timing advance since it was way off. Not quite sure how that...
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    '87 Mariner Speed Question/Help

    I just wanted to post a follow-up to this thread b/c I know that step can sometimes be forgotten. Long story short, I bit the bullet and bought a used carb body for my lower one and cleaned it really good. The motor has never run better! No misses, surging, or loss of rpm. I actually gained...
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    Mariner 45 Slowly Loses RPM/Surging

    I just wanted to post a follow-up to this thread b/c I know that step can sometimes be forgotten. Long story short, I bit the bullet and bought a used carb body for my lower one and cleaned it really good. The motor has never run better! No misses, surging, or loss of rpm. I actually gained...
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    Where to Find Replacement Carb Seat?

    I just wanted to post a follow-up to this thread b/c I know that step can sometimes be forgotten. Long story short, I bit the bullet and bought a used carb body for my lower one and cleaned it really good. The motor has never run better! No misses, surging, or loss of rpm. I actually gained...
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    Where to Find Replacement Carb Seat?

    Do you know where I could find one, racerone?
  8. C

    Where to Find Replacement Carb Seat?

    Tuscaloosa, AL. Zip code is 35406
  9. C

    Where to Find Replacement Carb Seat?

    It's a 45hp Mariner 4-cyl (serial# OB113850)
  10. C

    Where to Find Replacement Carb Seat?

    Hey fellas, I've got a Walbro WMA 6-3 carb (part# 6517A64) with a seat that has nicks and won't seal. I've tried everything with it disassembled, but it just won't shut off the fuel no matter what. The seat is pressed in from the factory and I'm needing yall's help in locating one. Do they (or...
  11. C

    Mariner 45 Slowly Loses RPM/Surging

    Thank you, sir. I've got a couple ordered and on the way. Will update when I get it installed and test to see if it keeps a seal.
  12. C

    Mariner 45 Slowly Loses RPM/Surging

    Yes sir, where does one find the Merc brand needles? All I see out there is Quicksilver...
  13. C

    Mariner 45 Slowly Loses RPM/Surging

    Alright, quick update... Polished the carb seats and needles really well. Got the floats to spec (replaced one that looked suspect). Took it on the lake today and it still was surging at WOT. Not as bad this time and it took longer for it to first occur. Ran great otherwise. Got home just now...
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    Mariner 45 Slowly Loses RPM/Surging

    Yes sir, I sure will. I'm gonna take the carbs off and break them down tomorrow. I plan on polishing the seats and needle valves to make sure they glide smoothly. I checked them out last week and I remember the needles being a little tight when I disassembled them. I just dismissed it at the...
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    Mariner 45 Slowly Loses RPM/Surging

    I got them off eBay. They were Quicksilver brand in a factory sealed package. Not sure the year they were made.
  16. C

    Mariner 45 Slowly Loses RPM/Surging

    Took a quick look just now and saw gas on both carbs. Hooked up the fuel line and pumped the bulb. Fuel came pouring out of the bottom carb throat. So, probably the needle isn't sealing. Crazy thing is, these are brand new needles installed last year. Float should be level where the carb meets...
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    Mariner 45 Slowly Loses RPM/Surging

    Hey Everyone! My'87 Mariner 2-stroke 4cyl (model# OB113850) runs idles fantastic ang great on startup, but after about 5 minutes at WOT the rpm's slowly drop and it begins surging causing the motor to shake. If I let off the throttle slightly it will smooth out and stop surging. It will keep...
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    '87 Mariner Speed Question/Help

    Hey Everyone! I've got an '87 Mariner 45hp 2-stroke sitting on a 20 foot 1990 Riviera Cruiser pontoon with an 11.1x13 prop. This is the motor that came with it when I purchased this past summer. Going at WOT on the lake with one other buddy on board, we reached an average speed of 14mph using a...
  19. C

    '87 Mariner 45hp Loss of power past 1/2 throttle.....completely stumped

    Hey everyone, I've got an '87 Mariner 45hp 2-stroke 4cyl (2 carb) that has no power past 1/2 throttle. She'll crank super easy, idles great, runs great from 1/2 throttle and below. When you try to go any faster she hits a wall and just stays there. If you back off to 1/2 throttle it...
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