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If you find that the connection at the center of the fuse is broken then youre dealing with a blown fuse. Reassemble is the reverse.
On the Yamaha on startup the engine should be reved a couple of time to help pick up prime.
Yamaha outboard water pump problems. Water pump issues continued. TownsendsFJR1300 you are absolutely correct on Okeechobee and the Rim canal as it is referred to. I did inspect the impeller and decided to go ahead and replaced it.
It is at least three years old. That part is finished and I will give it. A bad outboard water pump will produce lower water pressure than normal.
The outboard can stop pumping water out the tell-tale begin to overheat restrict the available RPM allowed and cause significant damage if not corrected. Thankfully you can service the water pump to. Yamaha Water Pump Problems Common problem with the Yamaha setup.
With the pump mounted on the front of the engine it may take awhile for the pump to pick up prime. If the pump has some wearage on it then that also causes problems picking up prime. On the Yamaha on startup the engine should be reved a couple of time to help pick up prime.
I did change the water pump impeller it has stopped over heating. I ran the motor in neutral at low rpm idle speed and at full speed for about 4 hours today. The motor performed well.
There are three reasons your outboard motors impeller wont pump. The first is that the water stream fitting – the outlet hole for an outboard motors cooling system – is clogged. Insects love to crawl up into it but once there they may become trapped and die.
Once the cooling system is full of water with no outlet the impeller just agitates. Why is my Yamaha outboard overheating. A faulty water pump is a major cause of overheating-related outboard engine failures.
Trimming the outboard up too much while underway or in turns can cause the water pickups to ingest air this causes a sudden loss of water pressure - not a good thing. Click to see full answer. 5 Years on a water pump is about max regardless of the hours.
Even If it looks fine when you pull it out I would not trust it. However the most likely cause is dirt dobbers or other critters that have crawled up there and nested. It is believed that premature engine failure and related issues are linked to a manufacturing or design defect in the coating of the exhaust components.
Allegedly this defect allows hot gases to corrode the exhaust passages which in turn can lead to holes in the passages and can eventually cause a loss of horsepower smoking and engine failure. A problem in the fuel compression or ignition systems can cause poor starting loss of power or other problems. This basic troubleshooting and possible remedies and covers all Yamaha outboard motors.
Therefore some items may not apply to your model. If any more questions please consult your Yamaha dealer or the experienced service shops. I have a 1984 Yamaha 150 outboard that wont flow any water through the tell-tale but the pump impeller looks brand new.
After idling for a few mintues I get a temperature alarm so I dont think it is the tell-tale so there must not be any water flow. How to How to Replace a Water Pump. This video is on how to replace the water pump on a 2005 Yamaha 25 hp 4-stroke outboard motor.
Un bolt the 4 bolts holding the pump on the housing. Pull the housing and impeller off the driveshaft note the impeller key. Reassemble is the reverse.
Put some grease or dish soap inside the housing of the pump. Put the impeller on the driveshaft indexing the impeller and key. The pump does work.
In the bin when I removed the thermostat with the old damaged gasket before I made a new one water was strongly sprinkling under the thermostat cover. I ran the motor on the boat. About 5 NMiles a little more than 1 hour and back without the top cowling continuously checking the cylinder temperature by finger.
If you find that the connection at the center of the fuse is broken then youre dealing with a blown fuse. Youll need to replace it with one of the same amperage which you can find listed in your Yamaha outboard owners manual. If you dont have a blown fuse your next step is to check the battery.
Yamaha Water Pump Replacement. Outboard motors make a lot of power and that comes with a lot of heat. Water Pump failure can ruin your day your motor and your boat season.
Replace your water pump every 200 hours or every 2 years so every OTHER 100 hour service. 50 in parts and a couple hours of labour will keep your engine running cool and. When the outboard fuel pump is bad it operates similarly to when the boat runs out of fuel.
You might notice sputtering or misfiring before the engine cuts out completely. To help you get back on the water we will talk about how the outboard fuel system works discuss ways to troubleshoot the issues and give you some expert pointers along the way. Other Key Items Yamaha Maintenance Matters.
There are a few other important things to keep an eye on. Check your owners manual for your particular outboards schedule and keep note of when to check on them by watching your hour meter or by using the Yamaha Outboards app on your smartphone. The rubber material can also get stiff and brittle a common problem on motors that sit unused for several seasons.
Then the vanes can take a set in one position and not flex back. The other impeller-killer is heat. Water lubricates the pump and if its run dry.
Yamaha Outboard Troubleshooting Forum. So many queries and questions from frustrated Yamaha outboard owners. Many are simply looking for a Yamaha outboard troubleshooting forum and Yamaha outboard motor problems solutions.
The Yamaha outboard forum will hopefully help with resolving common problems with Yamaha outboards. Fed water from the water pump housing to check to make sure the intake wasnt blocked before the water pump. Run a wire through the pee hole.
Couldnt get much there because theres a bend in it. Run a wire up the pipe that goes from the water pump housing up the foot toward the base of the engine.