How does a 1998 Polaris 425 Magnum 4 stroke work?

How does a 1998 Polaris 425 Magnum 4 stroke work?

I have a 1998 polaris 425 magnum 4 stroke. I starts up and idles fine but when I put ii in gear and bring up the rpms it bogs down. No power acts like it wants to die out and backfires. Bring down the throttle and it idles fine. Just will not take a load. This quad has just been tuned up and carb replaced. Submitted: 6 years ago.

Is the air filter on my Polaris 425 Magnum New?

Yes the air filter is new, oil and filter has been changed. Replaced the clutch belt. I can drive it around in low rpm fine but when I give it throttle to speed up thats when it starts or try to climb a small hill forget it. Just did that, runs very poorly hardly at all, it won’t even throttle up.

How big is the spark plug on a Polaris 425 Magnum?

Sometimes yor able to remove the sparkplug cap, trim off 1/8 inch – 1/4 inch of wire and reinstall it. This isnt my final answer. So dont rate me, until we get this quad running.

How to tell if your Polaris Magnum has a leak?

Getting hot, really quick, indicates a lean condition. Check for instake leaks around the head gasket and carburetor intake boots. Do this by spraying carburetor cleaner aorund the areas. If the rpms raise or decrease, then you have a leak. A vlave adjustmet would be our next step as well. Checking the cam for wear, as well.

What kind of car is a 1998 Polaris?

I have a 1998 polaris… I have a 1998 polaris 425 magnum 4 stroke. I starts up and idles fine but when I put ii in gear and bring up the rpms it bogs down. No power acts like it wants to die out and backfires. Bring down the throttle and it idles fine. Just will not take a load. This quad has just been tuned up and carb replaced.

I have a 1998 polaris 425 magnum 4 stroke. I starts up and idles fine but when I put ii in gear and bring up the rpms it bogs down. No power acts like it wants to die out and backfires. Bring down the throttle and it idles fine. Just will not take a load. This quad has just been tuned up and carb replaced. Submitted: 6 years ago.

I have a 1998 polaris… I have a 1998 polaris 425 magnum 4 stroke. I starts up and idles fine but when I put ii in gear and bring up the rpms it bogs down. No power acts like it wants to die out and backfires. Bring down the throttle and it idles fine. Just will not take a load. This quad has just been tuned up and carb replaced.

Yes the air filter is new, oil and filter has been changed. Replaced the clutch belt. I can drive it around in low rpm fine but when I give it throttle to speed up thats when it starts or try to climb a small hill forget it. Just did that, runs very poorly hardly at all, it won’t even throttle up.

Sometimes yor able to remove the sparkplug cap, trim off 1/8 inch – 1/4 inch of wire and reinstall it. This isnt my final answer. So dont rate me, until we get this quad running.

What was the problem with the cams on the Polaris 500?

The cams in the 425s and 500s of that era had a problem with the oil journals in them. The result was excessive wear to the lobes. I have replaced many of these cams, and the new design has extra oil journals and they are larger.

What kind of CARB does a Polaris Magnum have?

I have a 2002 Magnum 500 RMK. I just had the carb rebuilt by a Polaris dealer. It runs great. Idles perfect, accelerates great, perfect. That is until it dies.

How long does a Polaris ATV run before it dies?

It runs about 10 minutes, dies. The really weird part is that if you let it sit about 5 minutes it starts right back up again and runs great again. That is until it dies again.

How many liters does a Polaris Magnum have?

Polaris Magnum 425cc Specifications Specifications Model Magnum 4×4 Magnum 2×4 Engine 425cc liquid-cooled four-valve four-stro 425cc liquid-cooled four-valve four-stro Lubrication dry sump dry sump Fuel Capacity gallons/liters 3.5 / 13.25 3.5 / 13.25

Getting hot, really quick, indicates a lean condition. Check for instake leaks around the head gasket and carburetor intake boots. Do this by spraying carburetor cleaner aorund the areas. If the rpms raise or decrease, then you have a leak. A vlave adjustmet would be our next step as well. Checking the cam for wear, as well.

What makes a Polaris 4 wheeler not rev up?

Came back from the dunes. Ended the day with alot of wheelies. After getting home 4-wheeler starts idles great and runs good to mid throttle. After this it almost sounds like the rev limiter is kicking in. Air filter is clean. Went back through the carb seems to be good and clean.

Came back from the dunes. Ended the day with alot of wheelies. After getting home 4-wheeler starts idles great and runs good to mid throttle. After this it almost sounds like the rev limiter is kicking in. Air filter is clean. Went back through the carb seems to be good and clean.

Why does my Polaris ATV idle but die with throttle?

I pulled my fuel line to the carb and started it, when I gave it throttle it pumped more gas so I know it has gas to the carb. It seemed to run the same with the line pulled, until the remaining gas in the carb ran out. That makes me think it’s a fuel issue with the carb.

I pulled my fuel line to the carb and started it, when I gave it throttle it pumped more gas so I know it has gas to the carb. It seemed to run the same with the line pulled, until the remaining gas in the carb ran out. That makes me think it’s a fuel issue with the carb.

How to download the Polaris Magnum repair manual?

INSTANT DOWNLOAD Polaris Magnum 325 330 425 500 ATV (all-terrain-vehicle) repair manual. A repair manual is a professional book of instructions that list maintenance, repair and overhaul of the 4-wheeler’s main components. It contains information on ever aspect of repair. Download a manual to your computer in seconds.

What causes a Polaris Sportsman 500 to backfire?

I have a 99 Polaris sportsman 500 that is backfiring through the carburetor. It will start fine and idle perfect, but as soon as I touch the throttle it’ll pop and backfire like crazy at the carb. I can let go of the throttle and it’ll settle back to idling.

Why does my Polaris ATV pop through the carburetor?

Have you cleaned out the silencer as per owner’s manual which possibly could cause a over rich condition if air flow is restricted. make sure you have fresh gas and clean air filter and maybe even disassemble and clean the carb thoroughly. Check the ETC adjustment. Try it with the override button pressed. The etc is fine.

I have a 99 Polaris sportsman 500 that is backfiring through the carburetor. It will start fine and idle perfect, but as soon as I touch the throttle it’ll pop and backfire like crazy at the carb. I can let go of the throttle and it’ll settle back to idling.

Have you cleaned out the silencer as per owner’s manual which possibly could cause a over rich condition if air flow is restricted. make sure you have fresh gas and clean air filter and maybe even disassemble and clean the carb thoroughly. Check the ETC adjustment. Try it with the override button pressed. The etc is fine.

What to do if your Polaris has HIGH idle?

Thanks guy for the advice! If you are running an open air filter you definetly need to get that air/fuel screw cap off and adjust it. You should porbably get a bigger pilot jet as well. I ran a 50 pilot on the stock carb with an open air filter and it ran great.

What causes popping and hesitating on Polaris Pro riders?

That kind of popping/backfiring. You know how if it’s advanced too far it starts real hard and rough but will rev to the moon, but if it’s retarded too much, it starts super fine but sputters and bucks and spits and kicks. Would a sheered woodruff key put off symptoms like this?