Thread starter Bobby 63 Start date Jul 30, Bobby 63 Forum Newbie. Joined Jul 29, Threads 1 Messages 5. Joined Sep 11, Threads 10 Messages 1, Bobby 63 said:. Joined Nov 29, Threads 28 Messages 13, The cut off valve is a solenoid so it will generate heat during use. Usually the fuel flowing through the carb keeps it cool. IF you can run the engine by shooting shots of fuel down the carb throat, then the carb is not allowing fuel to enter the cylinder.
This is regardless of what you have cleaned, checked or replaced the fact remains that no fuel is going into the engine, end of story. Shooting the starting fluid into the engine proves that the throttle valve is open, the valves are working and the spark timing is right. This is done because unless the mower suddenly stoped deat it is usually the last thing, like tipping in fuel that was bad. So we know what is happening now but what was happening before.
Fuel pumps have a one way valve in them for instance. Fuel tank outlets clog up. Some fuel solenoids are polarity sensitive. In your case elimination might be a good idea. Put your hand on the outlet sideif it is not dampened by fuel then the carb is not flowing. Replace the fuel solenoid with a bolt and see if it sprays fuel out then.
Pinch the fuel tank of your push mower, hook it up to the carb and see if that sprays fuel out. You must log in or register to reply here.The U. Chamber of Commerce shared its insight on the Paycheck Protection Program.
Click here to learn more. Log in or Sign up. Sign up now! Chamber of Commerce offered guidance on the loan. Messages: Low speed idle, high idle are both right on. My hot-start problem seems to be fixed, too. When I go up a hill with the blades engaged, it bogs down. If I go up at full throttle, it almost stalls out. If this thing had a high-speed screw on the carb, I'd just tweak that, but of course it doesn't.
It seems like the governor needs to be bumping up the throttle under load a little more than it is. Is there a governor adjustment on these engines for that? D CApr 20, Are you only running on 1 cylinder? Pull each plug wire seperatly and see if it dies when you pull one but stays running when you pull the other. BTW use some insulated plyers!!!
I'll check that. D CApr 21, No problem there. Firing good on both cylinders. Sounds great right up until it's under some significant load. With only one of the two, it's fine. Update: My son was driving around the yard this afternoon not mowing, practicing driving the zero turn and I noticed that the engine is surging. At idle it's surging as well.
Kawasaki FR691V Manuals
The tach reads at fast idle, but the engine is speeding up to that speed, dropping a bit, then the governor kicks in and bumps it back up to the proper speed. So I tried adjusting the idles to make sure that everything was kosher, and figured I'd get at the governor through that process. The low un-governed idle was way low and the governed low-idle was a bit high contrary to my prior statementso I got those pretty close to where they needed to be.
Then of course, the high idle was still where it needed to be except for the surging and things really didn't change overall except I managed to get a lower slow-idle speed. Now, I'm stumped. The more time I spend on this thing, the more stumped I become. Went out with carb cleaner in hand, in search of a vacuum leak.
Found no apparent leaks, but the breather tube was disconnected. It wouldn't even come back up to idle speed when I engaged the blades, and it was popping out the exhaust. Back in the shop and I was going to re-check the idle in case the breather tube made much of a difference.
I didn't make it that far. I couldn't bear the fumes from this thing running as incredibly rich as it was! Running at part throttle, the engine was still surging, but it went something like this: 1 rpms drop 2 backfire out exhaust when the rpms bottom out 3 rpms come back up 4 repeat So somehow, this thing is running incredibly rich, and I now think that's the root of the problem.The U.
Chamber of Commerce shared its insight on the Paycheck Protection Program. Click here to learn more. Log in or Sign up. Sign up now! Chamber of Commerce offered guidance on the loan.
Messages: 6. My kawasaki engine will run fine for about 30 seconds or so under a load then it starts to bog down as if the choke is on and backfire or pop out of the exhaust, within a few seconds of me stopping my forward motion it will pick back up and run great for 30 more seconds. I have replaced the fuel pump, filter and both coils and this did not fix the issue. I have not cleaned the carb but I only have 10 hours on it. Currently I am waiting for it to cool down so I can take the bowl off of the carburetor and inspect it.
Any other suggestions or ideas would be greatly appreciated. Messages: 4, Send it in for warranty. It is over the warranty period in years. So what do I need to check next. Also there is not a good repair facility to take it to for over a miles from me one way. I just pulled the spark plug wires one at a time and the left one off it stayed running It made a little difference when I put it back on.
I pulled the right one and the engine died. These are two brand new coils from kawasaki just put on today. Ok, ohms tested the new coils vs the old coils, the new coils where the same readings about 7. So I am assuming that was my bad one. That being said, I also decided to check the plugs one was white and one was black with carbon. I switched the sides they were in and wouldn't you know it when I pulled each plug wire one at a time the mower died on the opposite side with the black plug in it.
So I am off to the store to get two new plugs. Hope that fixes it. TrainingWheels likes this. Well that did it, back up and running like it should.The U. Chamber of Commerce shared its insight on the Paycheck Protection Program. Click here to learn more. Log in or Sign up. Sign up now! Chamber of Commerce offered guidance on the loan. Messages: 8. I have a 15hp Kawasaki on a 48 Lesco and the engine surges. I did all the routine things I could think of.
Changed oil, air filter, emptied carb bowl, cleaned fins, sprayed carb cleaner, fuel filter. A couple of times it stopped surging when bring it to full throttle. Anyone have any Ideas? Michael MartinezSep 26, Messages: Surging is caused from a lack of fuel.
I could see the fuel spray then it would bog.Kawasaki FR691V 23 HP engine surge
Thanks Man, I've never done that before but there's always a first. Messages: 2, I would tend to agree that you have a carb obstruction. After my experience with two Kaws 17 and 23 twins do not overlook worn governor internal parts wear.
In one case the plastic plate that separate the governor balls had badly worn bosses on the back as well as a badly grooved governor plate. In the other case, the bosses had been sheared off causing the engine to over rev.
In the latter case, prior to over reving, the customer experience the surging you describe. Just something you may want to consider if the carb cleaning doesn't correct the problem.
It would also depend on the number of hours you have on the unit and whether or not you had ever esperienced any low oil situations. Yes it has expierenced low oil sits. I've never cleanded jets or repaired governors how hard are govenors to work on?
Old stale fuel left in a 4-cycle small engine, perhaps from sitting too long over the winter, can cause your 4-cycle engine to lose performance, or worse, cause it to stop working entirely. One of the ways to return a 4-cycle engine to peak performance is to clean the small engine carburetor. In some cases all that is needed is an adjustment, where carburetor cleaner is used to clean the exterior and the small passages, and a carburetor kit is used to replace old and worn out carburetor parts.
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Kawasaki FR691V-BS06 4 Stroke Engine FR691V CARBURETOR Parts Diagram
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Kawasaki FX691V HELP! Rough idle!
Took out the needles, blew out all the passages, and now the engine surges, a LOT. I've purged all the fuel and put in new, replaced the air filter, and put in two new spark plugs. It definitely does not run well enough to mow, but I am unsure what else to try here. Under load it dies straight away, without load in only runs while choked.
I may just take it somewhere to have it inspected, but figured I'd ask here. I assume it is a carb problem, but aside from cleaning it up, not sure what else to do. Last edited: Aug 9, MiataNC Platinum Member.
Dec 5, 2, 1 Sounds like a vacuum leak. A "choke" blocks air moving through the carb in order to richen the mixture when cold. So if it will only run choked, even when warmed up, it sounds like too much air is getting into the engine. PottedMeat Lifer. Apr 17, 12, I do seem to have plenty of fuel flowing through, and had replaced the fuel filter earlier this season. Too much airFulfillment by Amazon FBA is a service we offer sellers that lets them store their products in Amazon's fulfillment centers, and we directly pack, ship, and provide customer service for these products.
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We work hard to protect your security and privacy. Our payment security system encrypts your information during transmission. Sold by YunStal and Fulfilled by Amazon. Carburetor Carb Kit for K Coverage for mechanical breakdowns begins after the manufacturer's warranty expires. Fully transferable if bought as a gift.
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