Frank Angerano

Hey Christopher welcome to Quadcrazy, so glad to hear you got it running right. The cooling system fan runs off a sensor that’s mounted in the radiator. On that sensor are two wires. While the bike is running take the two wires off the sensor and jump them together. The fan should come on. If not then test the wires for 12 v. If you don’t have 12v then the fan power is obviously not there and it’s a mater of tracing the wires back to the source. Keep in mind that some manufacturers have two points of protection in place, one is the fuse at the fuse block and the other is an in-line fuse that’s going to the fan. If you do have power at one of the two wires going to the sensor and when you jump them together and the fan does not come on then your fan motor may be bad.

Enjoy and ride safe.

What do you mean he ruined your battery ? Is it possible that he tried to jump start it and hooked up the cables backwards? That would cause a considerable amount of electrical damage. It’s electronic fuel pump so you would have to take a tester and put it on the wires of the fuel pump with the key on. See if you have 12v at the pump. Before all that go basic first, look for blown fuses. Is the fuel gauge electric or float type? I would check for spark as well while your doing some testing also smell around and look around for any burnt wires along the frame. If that machine was fine before you lent it out then my guess is either he sank the dam thing in water or he jumped it and hooked up the cables backwards.

Haha that’s great, well I would t worry unless she ups the life insurance policy!

Hahahaha that’s great. 👍🏻

Agreed, I have some tight spots that are tough to reach.

Not really a test on he pump I can think of other then the ones I mentioned. What your looking for is coolant pushing out of the ports inside the radiator. Drain a little coolant out if you have to maybe an inch or two so you can look down into the radiator. When the engine runs the pump spins and your coolant circulation happens. That’s without the thermostat, when the thermostats installed the engine needs to reach temperature for it to open and then circulation begins. Some engines have a small bypass hose to allow minor circulation to happen I don’t think that’s on the Mojave. I’m assuming you put the silencer back on since it was clear ? Here is a pic of the name of the carb rebuild kit I use. I know you said you pulled the screw out to 2 turns and it works but if you decide to change that screw at least you have a kit with the air fuel screw. I piss my neighbors off all the time until they need something lol. Snow blowers don’t start, pressure washers car problems etc.

👍🏻

I would like to hear who uses what to clean there ATV’S. I’ve always been a fan of simple green and it’s always worked well but with this new property and the crazy black mud and clay that’s there I have to say the simple green is not cutting it. So from cleaning right after a ride to cleaning them when you find one in a barn I would like to hear what everyone does and what your recommendations. I’m looking to try something new.

Age is all mind over matter! If you don’t mind it don’t matter!!!!! Lol. But to be honest I feel the same way. All my friends have 600’s,700’s and 800’s etc, I love my 420 as it’s plenty fast. One thing I’m really interested in though is independent suspension. I am seriously thinking about a newer machine with independent suspension but that’s maybe next year. Need to flip a few more bikes since I like the fact that all the newer bikes I have are all purchased with money from buying, fixing and selling older atv’s. But anyway not to get off topic I like both of the machines you have and you take good care of your older one and I’m sure you’ll do the same with the newer one. Keep up the good work and ride safe guys. Keep the pics and the outings/rides coming.

A grey color, usually means water or coolant in the oil. You didn’t have to drain it just take a bit out but if it’s black it could use a change anyway. So that’s a good thing then if it’s a dark color. Moving on ! How about the thermostat housing? FYI you can take the thermostat out and use high heat silicone if the gasket gets torn or messed up as a temporary seal to test weather the water is circulating through the system. Me personally I would put a new thermostat in because it’s open but you can test it the way I explained for now to see if the engine runs cool without the thermostat. If there is no circulation then the water pump is not spinning but that’s the next step.

No worries brother that’s what makes Quadcrazy the best atv forum around. Ride safe and be sure to stay in touch and post some pics of your rides!

Pull the cap off ya radiator and run the bike. After the engine gets warm the thermostat opens and you see water circulating through the system. Or you can pull the thermostat out and put housing back on without the thermostat and run the engine and see if it still gets hot.

Locate that hub switch and there should be a white wire coming off of it. That white wire goes to the handle bar switch. That white wire you are holding might be coming from the hub switch. So start there and trace it back.

So where is the male portion of that white wire?

The air fuel screw is an important item on a rebuild kit. The tip of the screw gets worn down and that’s why your not getting an adjustment. Quick question, your coolant is full in the engine ? Thermostat and water pump are working including the fan ? It sounds like it’s got no coolant. If that exhaust silencer is not backed up then it’s running extremely hot for some reason. Check your oil and make sure no discoloring as if coolant is mixed in with the oil as well.

Well done. The bikes as much apart in the years yet still look close in style.

Sorry I was working all day give me a little bit and I will try and help you sort it out. If you look at the photo with the diagram it shows a ETC switch and an AWD switch. The ETC matches the color code wires you mentioned and goes back to the hub safety switch. I would start by tracing the wires from the handlebars and work your way down to the controller and the to the hub solenoids.

That’s great, nice work. Ride safe.

According to the diagram the white wire goes to the far right side of the controller that it goes back to.

I believe that’s the RSE switch. Is there a red button on the throttle handle ?

Hey Eddie welcome to Quadcrazy. Can you snap and post a pic I’m curious to see what it looks like.

Your welcome. Let us know what you find.

Could be a number of things. But first you have to identify what color smoke then pull the spark plug to see the color and also do a compression test. Black smoke rich fuel condition caused by a stuck choke of a dirty/improper adjusted carburetor. Blue smoke is oil from either bad valve seals or worn piston/rings.

I would pull the silencer off leave the pipe on from the engine and see if the exhaust pipe goes to glowing again while it’s running or pull the silencer off and inspect it to see if there is a blockage.