yamaha 25 hp 2 stroke problems

Remove the Spark Plug(s) and compare, are they grey or black and are they both the same colour? I have taken it out twice since then and the motor runs good so far thanks again. Category, View Maintenance, Boat Cleaners & I think it's either the coils or power pack, Had the carbs professional done getting rebuild kit for fuel pump tomorrow. I have a 2002 yamaha 25hp 2 stroke 3 cylinder. Galley, Barbeque Alan de enfield thanks so much for taking the time to write that for that really careful and detailed guide. $11 for three new NGK plugs did the trick. Pumps, Marine Pump Replacement Supplies, Boston Whaler, 1972-1993, Fishing Forums tiller outboard hp yamaha handle motor 1992 stroke freshwater cyl mn conversion kits Covers, Boat Seat outboard carburetors Now, Shop Financing, Iboats Covers, Boat Cover You can adjust your cookie settings, otherwise we'll assume you're okay to continue. So I am now about to watch any videos on youtube I can find to learn how to replace this myself. How does it act at idle Does it stumble when to push the throttle? Yes it is a snapped throttle cable!!! Parts, Rule 1500 GPH Automatic Fasteners, Boat Windshield Starters, Marine Solar Power Hold it in a 'tub' as petrol will leak out when you tip it upside down to remove the bowl (float chamber). Its no secret that Yamaha offers one of the most impressive 4-stroke outboard motor lineups on the market. Sign up for a new account in our community. I have done this in the past with plumbers, mechanics, electricians, brickies, decorators etc.

I suppose you have unscrewed the air vent screw that is normally in the tank filler cap! The more Ive used it, its gotten worse. for Sale, Buy A I thought the carbs were dirty for sure so I rebuilt them and all three looked perfect. Tables, Minn Kota Once thats done, you can try the Yamaha outboards starter again. Next time it gasps, pump the primer bulb. I have a 1989 20 LG with dual carbs. I think it's either the coils or power pack. Motors, Fishing Downriggers & Parts, Sacrificial Anodes &

I might be stating the obvious but have you checked the throttle cable has not snapped/come off? Insurance, Boat It's easy! Screws, Boat Handles, Pulls, Oars, Wakeboard, Wakesurf & The black plastic center piece is all you need to work on. The fuel line I bought new last summer so I doubt it is that. outboard stroke cdi freshwater mn hp unit engine ecu ignition yamaha 2002 A forum community dedicated to Small Skiff owners and enthusiasts. Hardware, Boat Cabin This is the video you need. If anyone has any advice that might help I would really appreciate it. I have just had to clear my Son's OB for exactly that reason. Hitches, & 2022 Eric's Outboard - Marine Service Inc. - Powered by ARI Network Services - ARI Responsive Websites, 8755 SW 129th St Axles, Boat Trailer Tie When I purchased a used 2006 25hp I went thru carbs, installed new plugs, cleaned fuel filter and installed new Yamaha fuel line assembly that terminated into tank with a brass 90 fitting and hose clamp. Youll want a professional to handle this as soon as possible.Youll also want to check the engine oil levels.

Use the hairbrush bristle again. Copyright 2019 IBOATS. Im not opposed to having a tune-up done since the motor is new to me, but Id like to try to see what I can do on my own first. What happens if you remove the air filter on top of the carburettor while it's running? Always start with the easy, before you commence with dismantling complicated assemblies which you don't understand. Does compression affect idle? 40hp hp Charts & Marble, Engine So stupid to make assumptions like that. Viewing 11 posts - 1 through 11 (of 11 total), trim.20FEEC57-AFBE-4047-A68E-C8A96CE83816.mov, For Sale: Left Handed Rifle Remington 700. If theres no damage, the next step is to remove any seaweed or other debris that might have become entangled in it. Boat, Sell A cylinder stroke yamaha hp head outboard freshwater 1992 mn This engine have single carb?

I did manage to foul a plug on mine from idling a bunch and it caused the motor to act up. In fact, it's just been a "cantankurous" SOB since I got it (probably the reason the previous owner sold it). Tackle Boxes, Fishing Bait & Shelters, Boat It's easy enough to remove the cable and install a new one. Thanks for replying I have pulled the cover off the fuel pump and there was some gunk in it so I cleaned the best I could but I couldn't take the whole pump off the carb. Sockets, Marine Electrical However carburettor jets or water would be my first thought. Thanks perkdp. If youre still experiencing issues, please contact your local Yamaha Outboard Dealership. All, Anchor & Judging by your questions and the response to the answers and suggestions, I would say that your safest bet is to find someone who knows what they are doing, ask for their help and watch carefully, asking questions as you go. CREATE

ACCOUNT, Find yamaha hp stroke 25hp So helpful it's not true!!!!! Breakers, Power Packs & Jump Keep an eye on the thermostat. Took the boat out for a couple hours today.

TheFamousGrouse wrote:

The motor would rev up in gear get on plane and the bog way down. Sealant, & Have you tried adjusting the carb to richen the mixture a little? still blocked ? High Back Reclining Helm Seat, Cabin and Thank you all that replied . Only happened in neutral at idle. On 02/07/2018 at 11:55, Mike Hurley said: Yamaha outboard 25hp suddenly wont go into high revs. GPS Chartplotter and Fish Finder Combo, Find And clean and adjust the carbs as mentioned already.As the engine is old these things may have not been done for a long time, or ever done. New plugs. Covers, Other Yes still runs when problem starts. Do you always run it dry before stopping ? I was saying it would seem odd if it was a spark issue given these symptoms. Or can point me towards any youtube videos that I might be able to follow to fix it. Adjust from there. If its a blocked jet do you think it is something you can teach yourself to fix or am I best calling a mechanic? Tops, Bimini Top If its still not starting, youll want to consult a professional to inspect the electrical system. How do you take it off? water under the bridge. This helps enormously when you come to put it back together and you can't quite remember where that little spring came from and where it should go back! Typically outboards have a mechanical link that advances the ignition as you open the throttle. yes alan istotally amazing! You can count on our Yamaha Certified Master Technicians to get to the bottom of it. Winches, Boat Motor Supports & It seemed odd, but it never actually died. Dock, Cabin and Yamaha Outboards: Click here to browse the models. http://www.boats.net/parts/search/YaTOR/parts.html, If this is your first visit, be sure to If your primer bulb feels like it has air in it when it acts up, put a whole new line and bulb in. The idle jets in a carb are much smaller than the high speed one. I'd suggest that for the 1st time, get someone to do it who has done it before - there are quite a few little bits that can be dropped, hinges on floats, washers, gaskets and such like. Try to warm up the engine before making any adjustments if possible. If youre experiencing excessive vibration, you can start by checking the condition of the propeller. It wouldn't start at the launch this weekend, so the problem has gotten worse.

Start by unscrewing and removing the electrical cover. AN I took a video of the issue but its too big to attach here. Shop yamaha outboard hp stroke manual f25 If it will still not clear, go back outside, (off the boat) pour some petrol into a tub and put the jet in to soak for an hour or so, dry off and try blowing thru it again. Could also be a fuel line problem. There is less vacuum to say, run a weak fuel pump. If you find any damage, youll need to remove it and bring it in for repair or possible replacement. As per the other comment above there are other possibilities but before we start ordering and changing parts I thought we should try the simple stuff first. Accessories, Big Jon http://www.boats.net/parts/search/Yamaha/Outboard/2002/25MSH3A/CARBURETOR/parts.html. If its a blocked jet do you think it is something you can teach yourself to fix or am I best calling a mechanic? Accessories, Marine DC Power Plugs Locks, Boat Deck Tubes, Shop

Trailer Winches, Shop Seats, Offshore Boat Biminis, Paint and Cleaned and reinstalled with Blue loctitie. Combos, Fishing Tools & It's a part of the carb float bowl. You could try screwing the tank air vet screw down (light bulb moment - see below) but the engine may suck sir into the tank via an old filler cap seal. I'm curious what oil ratio do you use? Right that makes sense. When its completely charged, reinstall the battery and cables. Rollers, Boat Trailer I will look at the plugs next although it seems odd to me that there are no issues at higher RPMs. DO NOT POKE WIRE, PINS OR ANYTHING ELSE INTO THE HOLES - YOU WILL DAMAGE AND PROBABLY ENLARGE THEM. I always turn the fuel off until it runs dry (when I remember) and drain down over Winter. Blocked jet - I had that problem on a Seagull years ago. Plumbing, Fresh Water Boat I moored up and had a look at the prop and pulled some weeds out but nothing serious and then tried her again. Either find a way to submerge the lower unit in a trash can, barrel, etc or do this at a quiet public access with the boat in the water. Outboards, Shop outboard Cable, Marine Batteries & your boats Gel Coat Match, Shop It has just snapped in two so mystery solved. Fishing Lures, Fishing Rod Holders & Parts, Wash Down Any suggestions? Deals, Camping & RV Deals, Pumps & Plumbing All, Boat Bimini What should I be looking at in terms of fuel delivery? But I noticed that if I left it idling in neutral, it would seem to gasp for fuel. I've also gone through and cleaned the fuel pump and filter, replaced spark plugs and endlessly tweaked the air mixture screw. JavaScript is disabled. All times are GMT-5. But at least I have got some really good advice on how to clean and care for my engine and how to clean the carburettor. Forums flat gasket under the plate on top of bottom carb had deteriorated and half coverd the low speed flow. Transom Lighting, Marine Teak yamaha hp outboard 1994 lower stroke unit cyl freshwater mn motor It also has a clean tank and hose filled with fresh ethanol free marine fuel. But I don't understand how you would 'turn off the petrol' before the engine? Zincs, Generator

Hey alan its a 2-stroke, and saying as I had never heard of running it dry before stopping this is obviously something I have never done.

Deals, Paint & Maintenance Maybe the tick-over jet is clear, but the main jet (that comes into play at high throttle levels) is blocked ? Seats, Fishing Boat Protection, Dock Storage & Maintenance, Pumps and That happened to me last year. Platforms, Slide There are a few steps you can take to troubleshoot starter issues. Dont forget to completely dry the terminals with a clean towel when youre finished.If the battery is damaged, you should replace it. If the levels are low, refuel it with the appropriate gasoline for your model. There are plenty of videos online showing how to adjust an outboard carb.

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installed a new gasket. Products, Carbon Monoxide & ha ha. yamaha 90 outboard stroke hp manual 90hp service repair 2006 1996 engine manuals ec21 hp yamaha stroke competitor outboard Have you tried adjusting the carb to richen the mixture a little? Blocks, Marine Looked motor over real good and found loose bolt. JavaScript is disabled. Holders, Cabin Accessories & PFDs, Roof Racks, Carriers, They only last so long.

So you finally did the compression test and that looks good. The engine has plenty of power at high speed, so I "assumed" compression was good. But I will be spending a lot of today watching youtube videos to try to learn about this stuff. yamaha outboard f200 stroke 2002 boat engine v6 hp motor Remember to connect the positive first and the negative second. By lean, I am not talking about fule to oil, Im talking about fuel/air mixture at the carb. Did some fishing on the trolling motor (just one pike) and then ran around at full throttle for a while and brought it back to the dock to tinker. Riptide Terrova 80 Trolling Motor w/i-Pilot & Bluetooth, Inflatable If the level is below the L mark, you should refill the tank. Drink Holders. Software, Digital Powered by Invision Community. yamaha outboard tiller Might be nice to know if the throttle is being advanced for a cold start or is it fully retarded. and thanks cereal tiller, I will have a look at how to drain the carburetor. Sorry to have bothered you all with this mystery problem when a simple look around my engine would have totally confirmed what it was. Could be Water in the Fuel?drain the Carburetor and check for Contamination.just a couple of drops can cause Erratic Running.

Any suggestions about what this could be? I have a 1989 20 LG with dual carbs. Lights, Boat Trailer Bilge Pump, Tires, Rims, & Hub It may not display this or other websites correctly. Bilge Pumps, Shop We hope these tips for troubleshooting your Yamaha 4-Stroke Motor have come in handy. Be sure to safely disconnect the negative cable followed by the positive cable before you remove the battery from its housing. Telescopes, Covers and Video, GPS Chartplotters & Trolling Motors, Shop But even better would be a recommendation of where I could order a new cable, hopefully somewhere that would be sympathetic to someone who doesn't really know what they are doing but eager to learn and do it themselves. Caulking, Marine Engine I don't have an RPM gauge, but have a good idea that if I keep the RPMs over 1000 it will idle, maybe a cough every once in a while, but it will recover on it's own. If you find any breaks or leaks, you should stop using the engine. Distribution, ProMariner ProNautic Systems, Marine Plumbing stroke Anchor Box Anchors, Fishing Rod & Reel Terminals, Marine Fuse Blocks & Towers, Tow Ropes & check out the. Tops, Other Had the carbs professional done getting rebuild kit for fuel pump tomorrow. Holder, Anchor & Dock If not, its time to bring it in for an inspection. & Dock, Anchor Chains & Checked compression - 125 psi in one cylinder and 122 psi in the other. Honda 5hp Outboard, Boat My 30hp had a few that were corroded really bad including the ground when I bought it. July 2, 2018 in New to Boating?

Parts, Inflatable Everything was smooth as butter and then it would come very close to stalling out before saving itself and coming back to a normal idle. Switches, Shore Power & AC Instruments, VHF Radios & yamaha carbureted outboard Thanks for your help guys, but I don't actually know what a jet is? I think it is about the level of maintenance that I might actually be capable of. Thanks AllDodge - yes, I struggled with the site not working earlier! Varnish, Marine Adhesives, They tend to rotate the stator that sits below the flywheel. Deals, Electronics Savers, Boat Trailer Guides & Guide, Boat Rafts, Paddle Carefully scrape away any corrosion on the battery terminals with a wire-bristle brush. Login, Boats Marine Battery Chargers, Shop Thanks for all your help as usual you wonderful boaters. Alternatively, if you find the level is above the H mark, you should remove excess oil with a syringe.Your last step involves the spark plugs. Thanks steelespike. It will normally clear quite easily just by soaking and blowing. Accessories, Boat Lift Canopy If not that would cause fuel starvation and the engine might well run on idle but nor rev p. The air vent on the tank is open so its not that but thanks for the attempted problem solving! Meters, Marine Electrical Panels Any advice you might be able to give on this would be amazing! Forums, Find Ill see if I can compress it. outboard If you find that the connection at the center of the fuse is broken, then youre dealing with a blown fuse. problems seem to be solved. Professionals. You should also measure the spark plug gap with a wire thickness gauge to confirm the gap falls within the range listed for your model. I have a 1997 Yamaha 25 HP (MSHV) outboard. If you do it yourself use your mobile phone to take pictures of everything you do, as you do it. Acessories, Fish Cleaning Adjust it with a spark plug gap tool if necessary. Manufacturer, Boat Tables & In future : Turn off the petrol before stopping the engine, keep it running until it either starts to 'race' or starts to 'hunt', then turn off the ignition and the carb will be dry and won't get gummed up. This motor is driving me nuts. Pull the carbs and have them ultrasonically cleaned, new fuel filter, and plugs, things that should be done anyway and start there. Canal World accepts no responsibility or liability for any user submitted content. Rails, Marine Tools & Tool IDO Harware, Marine Nuts, Bolts, & Even when I gunned the throttle it still just stayed in low revs.

Nonetheless, this is the kind of help I need! Have I got that right? Grills, Boat Drink Deals, Boat Seats (download the manuals, take it slowly and work on a table with a cloth on it to catch the bits that drop out). When the engine is cold, I usually have to keep revving (and sometimes rapidly pulling out the choke and pushing it back in) to keep it running. Parts, Boat Tubing & Maybe it's going into limp mode? Good advice though. yamaha hp powerhead stroke outboard remanufactured required core 2040 parts You have 4 threads now, yes the website still has some issues. New In-Depth Outdoors TV episodes return this Fall, Sundays at 8 a.m. on the Fox Sports North channel! I have run probably 6-8 tanks of fuel through the outboard this summer so I dont think its an issue with old gas. very helpful! When youre done, reinstall each spark plug and place the caps back on. Ha ha. Your fuel pump could be getting weak as well. ha ha! Thanks I will look into it. & Live Bait Next, use a pair of pliers to remove the fuse holder.

When they get old, cranky, worn, and hot, they start to short out.

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