[HopeFlynn7x]

1999-2002 Manual Covers: Mercury Outboard 30HP, 40HP (4-Stroke) - Non-Bigfoot & Bigfoot Engine-Motor (Four-Stroke) starting with serial number 0G760300 and above. [links]

[Mariod4965]

2000-2001 Manual Covers: 2000 & 2001 Mercury 75hp (75 hp) 90hp (90 hp) 4-Stroke (Four-Stroke-FourStroke) Outboard boat motor. Starting model year 2000 & starting Serial Number 0G960500 and above. [links]

[ysilk]

1986-1990 Manual Covers: 6/8/9.9/15HP Motors 1986 and up With Serial Numbers OA1972112 and Above. more

[BeeCee1]

1990-2000 Manual Covers: 1990 1991 1992 1993 1994 1995 1996 1997 1998 1999 & 2000 Mercury Outboard 2-Stroke models, exact models listed: 90, 91, 92, 93, 94, 95, 96, 97, 98, 99, 00, 2.5hp, 3hp, 3.3hp, 4hp, 5hp, 6hp, 8hp, 9.9hp, 10hp, 15hp, 20hp, 25hp, 30hp, 40hp, 50hp, 60hp, 75hp, 90hp, 100hp, 115hp, 125hp, 135hp, 150hp, 175hp, 200hp, 225hp, 250hp, 275hp.

[Marlsfarp]

1997-2000 Manual Covers: 97-00 Mercury and Mariner 40-50-55-60 HP Two-Stroke Models with serial numbers OG531301 and above. more

[Limb]

I went back to the boat yesterday evening to check it out and use my electric outboard to get out to 4-5 ft water. My electric also had some weeds I then started the outboard but there was no change from Tuesday and it still idled rough and would not rev up in gear so I returned to harbour and captured a video of the engine running
20210721_183106000_iOS.MOV

[ColdHardMetal]

NB! Cooling water is flowing freely from the engine. more

[Hariposter]

I moor the boat in a private harbor but over the past 2-3 weeks the water levels have dropped and for about 200-300 meter into the harbor and berth there is a lot of weed near the surface. I usually have had to remove some from the prop when I get in. To mitigate I try to keep the trim up leaving and entering and it seems to work. here

[w8ks6]

This is my first post and I would greatly appreciate some advice. I have a 2004 Quicksilver 460 with a Mariner 40hp 2-stoke from the same year. I got the engine professionally serviced earlier this summer after purchasing the boat and it was running perfectly fine. I have spent approx 30-40 hours on the lake. [links]

[kwukduck]

On Tuesday evening I was coming back to the harbour and about 500 meters out (before I hit weeded area) the engineer was running at slow speed but all of a sudden the revs dropped as if the trottle had been eased back then the engineers started to sound different (rougher). I tried increase power ingear but the engineer would not rev up. I was afraid it might shutdown so I just cruised back into the harbour. When I tied up the boat there was a lot of weed/grass around the prop which I pulled off. Probably the worse I have seem over the past 2-3 week. While berthed I restarted the engineer in idle but it still didnt sound right and called it a day. here

[RogerRabbit]

My 97-98 Mercury 40hp outboard won't start after it has warmed up. It will start right away and idle when I first put it in the water (every time). It also runs very strong after it is first started. BUT when I go to restart the motor after I have been sitting in a fishing spot, it won't start. Any suggestions on what this could be?

[artdegree12]

Doesn't smell like gas, and I am not using the choke to restart (though I have tried that after no success not using it). more

[saullysaul78]

UPDATE: It turned out to be the switch box. Which is a $180 aftermarket part that essentially distributes all the electrical in the motor. I had the stator replaced first and took it out on the water the next day, and I couldn't get it started after the first run (about 15 minutes 3/4 throttle). I played with it for about 2 hours trying to let it cool and experiment with different variations for the start, i.e. throttle open, choke, etc. I took it back to the shop and read the multimeter with them and we discovered that the switch box was producing 60v to the starter which required 100v. Was able to source the part, which was a bitch at 3pm on a Friday, and finally found one. Replaced the switch box and was out on the water for 18 hours of the past 72. No issues at all. here

[barbarousrelic]

The older you get the more you realize that no one has a f++king clue what they're doing.

[galeru]

The fuel filter is a plastic round bowl which has a gauze cylinder debri filter inside it? its a cleanable type one. Ill try the new clip in fitting to motor and keep posting progress! cheers Darren here

[anarchy]

Everyone's just winging it.