Hot answers tagged

10

Stopping a naturally aspirated engine will cool it down, regardless of the fan running and etc. The idea behind "turbo timers" on turbocharged cars is not at all engine cooling related, rather it is to allow the delicate and extremely hot turbocharger components to cool down via keeping the oil feed circulating through it for additional 15-30 seconds or a ...


9

Lean and Rich Symptoms in Motorcycle Carburetors In your post you indicate that some of the symptoms you have read are contradictory. I will try and clarify between the two conditions and attempt to give you guidelines in troubleshooting between the two. Background Motorcycle carbs have a few circuits that effect different throttle positions. Idle ...


5

In the image below notice that there are no rocker arms or push rods. The cam acts directly on the shim and bucket which acts on the valve stem. You adjust the valves by changing out different shims to get the appropriate valve clearence. In this image, the shim is over the bucket. This is what your Yamaha has. You have an Over the Bucket Shim to adjust ...


4

A shop manual (particularly one with colour photos) will offer some spark plug diagrams / photos, to compare against your plugs, but they're not particularly useful. As you said, claims are contradictory. The problem is, that a symptom of too lean/too rich is that it doesn't run as well as it should. That's both ways. So a too-lean symptom for one person is ...


4

The 2012 XJ6 is fuel injected, so an aftermarket exhaust (Arrows, Leo Vince, Scorpion, Two Brothers, Akrapovic etc) would be easily procured. You may even get good deals on used slip-on exhausts, and you could then re-pack the glass wool (other as applicable) if required. In order to keep the cost down, you could opt for a slip-on exhaust (muffler) instead ...


4

The exact answer to this is - It Depends... The reason for this is that your existing ECU, whether it be on a bike or in a car, has a range of inputs and a range out outputs, and a mapping between them. As long as your inputs are within the ranges expected, it may well be able to cope with the changed architecture, however there are two common problems: ...


4

According to this User Manual on Page 53 (section 6-3) a Valve Clearance check should be carried out every 26,600 miles (42,000km). It also highlights any other maintenance that should be done and at what intervals. I think checking is relatively simple (assuming you are handy with a toolkit. I found a site that gives this method of checking your valve ...


3

Breaking in the engine correctly will greatly affect the longevity and performance of the bike, plus you have warranty regards to worry about as well. I found this from a Yamaha forum and seems along the lines of what I understood to be right: According to Yamaha, you are to keep the engine below 5900 rpm for the first 600 miles and vary the rpm. Do not ...


3

The issue could be a vacuum forming in the fuel tank (check vents), looking at the yamaha site, it doesn't look like you have any active cooling (fan/radiator) so unlikely to be that. There may also be an air-hose leaking somewhere or possibly a vacuum leak from the intake manifold.


3

Yes, you can relatively easily determine if your fuel filter is clogged. The XJ600 has a vacuum operated fuel pump below the downdraft carb bank. This is what it looks like. The stock fuel filter is an inline filter and this is what it looks like. As I'm sure you have noticed, the filter is a bit opaque and you can see if it is clogged. It's very easy ...


3

Check out the Yamaha web site for the models you are interested in. They should list technical specifications for each model. If you are concerned about performance differences focus on peak horsepower and peak torque at a specific rpm along with top speed.


3

If I am not mistaken the 2001 Yamaha Diversion has a clutch cable and does not have a hydraulic self adjusting clutch mechanism. This was my son's first motorcycle and we experienced similar issues with his. I will say that this model is bullet proof. Especially the 8 valve air cooled version which you have. Throw Out Bearing If your throw out bearing ...


3

To add on to Mikes answer: Next you'll probably find that the carb is full of varnish. (a thick sludge left behind when gasoline sits in a puddle for a long time). You'll probably end up having to disassemble and clean it out, you may need to by a carburetor rebuild kit. (probably) Next, there's a good chance that the rodents have damaged the wiring. ...


3

Remove the spark plug. Squirt some oil into the cylinder,you can use regular motor oil but Liquid Wrench or equivilent would be better. Let it soak overnight.With the bike in neutral see if the motor will spin over using the kickstarter. If it won't turnover the motor is seized. At this point it is not worth repairing but could be a valuble learning tool. ...


3

I don't know for sure, but would bet your best option is the last one. I know straightening tubes of any sort is a very hard option. There should be an Allen head bolt which is clamping to the forks. You don't want to take the fork loose if you can help it, as getting alignment back right could be a huge pain in the butt for the uninitiated. If replacement ...


2

Modern motors (and other aggregates) produced by reputable manufacturers (Yamaha be one of them) for established markets (Western Europe, Australia, North America etc.) are engineered with low tolerances, thus should have little variances in operation. In emerging markets engines could be (or could have been not long ago) older, and poorer manufacturing ...


2

I highly recommend that you find yourself a shop manual for the bike. These are available in hard copy version, and sometimes in PDF format as well. It will make it clear how to perform various operations, and make it less likely that you will do it wrong. I highly recommend that you do not mess with any of the gears. Transmissions run at very tight ...


2

Took it to a mechanic and he found the problem with a test ride. It is a side effect of the lowering links being installed too low. I am just too dang short for the bike. After I sit on the bike the chain hits the chain roller (which was torn all up) and at a certain vibration you hear it clinking away. I'm re-installing the factor links and hope I don't ...


2

If you synchronize and clean the carburetors the bike will not have the same power that it did before you removed the baffles from the exhaust system. The baffles created back pressure in your exhaust system that restricted the flow of the exhaust gasses. When you removed the baffles it allowed the engine to 'breath' easier due to the lack of restriction. ...


2

By removing the baffles you have reduced the amount of restriction and backpressure. This has the effect of making the engine run lean. If you get the carbs tuned so that it's running properly, it should run as well as it did before you performed the baffle-ectamy. With a free-er flowing exhaust it may even run better. But that's only if the original ...


2

I spoke to someone who has Grizzlys for similar work here, he suggested the following necessities and spare parts: Basic repair kit Carburetor Spark plugs Air filters Oil filters Brake/throttle cables Fuses CDI unit Starter coil Electrical relay


2

Overview There are a few items that would be considered essential regarding maintenance and consumable parts. Parts on quads that are considered consumable include the standard items such as break pads but also items such as brake levers. Since the vehicle may tip over, breaking a lever. Kit Items Tire repair kit. This would include a good set of ...


2

A quick Google search resulted in this. I couldn't find the legend for it but I guess it should be fairly straightforward. It could be bad wiring, bring out the multi-meter! EDIT Here's a link to the COMPLETE SERVICE MANUAL . It's in German, so you may need to use a translation service .


2

Here is the part number for your carb. This is for an OEM Yamaha carb. 3HN-14101-00-00


2

There is no need to reprogram the ECU This is for a couple of reasons: The engine barely feels a difference Contrary to what the name implies, a "free-flowing" intake impacts the pressure at the valve inlet and not the volume of fresh inlet air per cycle. Here are the numbers to back it up: K&N provide detailed test data for the Yamaha R15, which ...


2

There is a cam within the ignition switch mechanism that pushes the locking pin out when the key is turned. the mechanism is a complete component and when they have broken in the past on vehicles I have worked on owned I have simply replaced them. Individual components within the ignition switch module cannot be purchased. If disassembled they may be able ...


2

If the engine will run, I doubt you've "blown the engine". Usually a blown engine indicates that it's dead. Caputski. Bon Voyage. Sailed for greener pastures. In your case, I would bet one of the gaskets has let go of the goods. It appears that the side case of your engine has three parts to it. I think there are some easy things to check: Check to ...


2

Your ATV has a twin cylinder engine. I believe the "caps" they are referring to in the diagram are the caps which go onto the coil leads. You need to test the coil resistance through the spark plug leads, with and without the caps. The caps are the part which screws into the spark plug lead and attaches it to the spark plug. Here is a video which explains it ...


2

Also I want to add my 2 cents. When I look at Yamah FZ8 I see that it is water cooled... so I think that the purpose of the fan is to push air on the cooler as it should have a bigger surface than the engine itself. When you turn on the ignition the fan pushes air on the cooler but the water pump is not running as the engine does not run. So I would think ...


2

Twisting the throttle opens the butterfly valve in the carburetor which allows it to suck in more air. With the increased air flow, the carb should also suck in more fuel. So, if enough fuel isn't supplied the engine can't handle the extra air. I don't know enough about your bike to offer a solution, but this is one possible cause.



Only top voted, non community-wiki answers of a minimum length are eligible