Mercury mariner

Have a question about your motor? All motor talk and questions go here.
Bign0703
Posts: 30
Joined: 15 Sep 2021, 00:20
Location: Henning tennessee

Mercury mariner

Post by Bign0703 »

Hey guys
I just purchased a 1997 mercury mariner 25 hp. Runs great but needs a throttle/shift cable. I've searched everywhere and all of the parts sites I usually order from and can't find one at all. Everytime I search the serial number it shows a 9.9hp but the tag even shows 25hp on the motor. I will attach a picture with the tag. Could anyone point me in the right direction for one?

06564056
1997
25he
25hp mercury mariner

Bign0703
Posts: 30
Joined: 15 Sep 2021, 00:20
Location: Henning tennessee

Mercury mariner

Post by Bign0703 »

Here are some pictures of it and the tag
You do not have the required permissions to view the files attached to this post.

overboard
Posts: 1248
Joined: 21 Jul 2011, 10:31
10
Location: palmerton pa.

Mercury mariner

Post by overboard »

Try this---- Crowley Marine parts, select your engine, and enter the required info, it will show up as 25EH parts and it does look like it is available as part # 43242T03.

Bign0703
Posts: 30
Joined: 15 Sep 2021, 00:20
Location: Henning tennessee

Mercury mariner

Post by Bign0703 »

overboard wrote: 03 Oct 2021, 17:17 Try this---- Crowley Marine parts, select your engine, and enter the required info, it will show up as 25EH parts and it does look like it is available as part # 43242T03.
Thank you!!!! I don't know how but I didn't even think of looking at Crowley! I know I was completely stumped after searching for 3 hours! Really appreciate it!

overboard
Posts: 1248
Joined: 21 Jul 2011, 10:31
10
Location: palmerton pa.

Mercury mariner

Post by overboard »

You're welcome, hopefully the info. that I provided is what you needed and correct, you could also call Crowley and ask them to confirm using the serial number.

Bign0703
Posts: 30
Joined: 15 Sep 2021, 00:20
Location: Henning tennessee

Mercury mariner

Post by Bign0703 »

Overboard it was spot on! I ordered the throttle and shift cable and new bushings for the tiller but they had to get everything from mariner so waiting on shipment. I really appreciate it. Absolutely love this forum!

overboard
Posts: 1248
Joined: 21 Jul 2011, 10:31
10
Location: palmerton pa.

Mercury mariner

Post by overboard »

Very good, glad to hear you got the parts that you needed and glad I could help you out.

Bign0703
Posts: 30
Joined: 15 Sep 2021, 00:20
Location: Henning tennessee

Mercury mariner

Post by Bign0703 »

Ok guys. I'm in a pickle with this thing. Replaced the entire impeller assembly along with the water tube seals and she won't pump a drop. I've heard several say these motors have to be submerged to pump and won't pump off a hose but don't know for myself. I plan to dip the lower into a tank and running it with a drill to see if it is pumping but anyone have any idea what could cause this. When it's on a hose it acts as if all the water is flooding the mid section but not going through motor.

User avatar
onthewater102
Posts: 2259
Joined: 15 Mar 2014, 16:57
8
Location: CT

Mercury mariner

Post by onthewater102 »

When you say flooding the mid-section do you mean you have water pouring out of your driveshaft housing area (behind the swivel bracket)?

If so it sounds as if the water tube isn't seated correctly up under the powerhead, it may have kinked the rubber grommet seat at the top or misaligned all together.

Always good to double check mud-wasps haven't been at work in the tell hose or fitting by running a wire around in the end.

I wouldn't advise running it on a drill. It's a 2 stroke, so it needs the oil in the fuel. If you pull the plugs out and crank it you risk damaging the finicky ignition components if they're not grounded. I would just fire it up normally and shut it down if it isn't peeing in 10 seconds or so of running provided you're sure it's getting water to the impeller. The impeller is the sensitive component to being run without water circulating.

The motor will eventually overheat without cooling water, but that takes a while to build up the heat, whereas you will damage the rubber if it's spinning without water to lubricate the impeller itself in a very short amount of time.
I have a marriage license and a fishing license, but I only carry one in my wallet.

1985 Bass Tracker III

For Sale - Custom Hand Tied Jigs, Bladed Jigs,Custom Rods

2002 Alumacraft 1436LT (SOLD)

Bign0703
Posts: 30
Joined: 15 Sep 2021, 00:20
Location: Henning tennessee

Mercury mariner

Post by Bign0703 »

Correct. I replaced the tube seals and double checked and they seem correct and seated properly.

And no I have the lower back off I was planning on using the drill to turn over the driveshaft itself. But I've never dealt with many Mercury's and never had a motor that wouldn't take a hose attachment besides older models that aren't set up to do so

User avatar
Pappy
Donor
Posts: 3295
Joined: 15 May 2010, 00:38
12
Location: Central Florida

Mercury mariner

Post by Pappy »

I take it you are running on "ear muffs"?
Are they the round ones or squared off ones?

Bign0703
Posts: 30
Joined: 15 Sep 2021, 00:20
Location: Henning tennessee

Mercury mariner

Post by Bign0703 »

Yes sir, and the square. They are seated great. I picked up a plastic barrel today and I am still waiting on my set of round muffs with the through rod. I happened to left my last set in a boat and the guy said he didn't see them so I had to go get some til my new ones come in. I've just never had one act like this even with the square muffs. But I also rarely touch mercury/mariner outboards either

User avatar
Pappy
Donor
Posts: 3295
Joined: 15 May 2010, 00:38
12
Location: Central Florida

Mercury mariner

Post by Pappy »

I cannot tell you how many customers we have had come in with a burned up water pump from running on the squared off muffs. They may look like they are sealing but the pump will pull air past the edges.
We absolutely quit selling the squared off ones several years ago.

Bign0703
Posts: 30
Joined: 15 Sep 2021, 00:20
Location: Henning tennessee

Mercury mariner

Post by Bign0703 »

Yeah I had the squared ones myself. They've gotten me by but that's all I can say haha. I'm hoping my new ones will be here within the next few days. They were the best I've ever used. Circle with the rod that goes through and locks down. Never had an issue with them.

User avatar
Pappy
Donor
Posts: 3295
Joined: 15 May 2010, 00:38
12
Location: Central Florida

Mercury mariner

Post by Pappy »

By the way, when you are running in a barrel or bucket the water level has to be a few inches above the parting line where the gearcase meets the exhaust housing. That will insure your water pump is fully submerged and capable of pumping.