Question about Polaris ATV

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98 polaris scrambler 400 4x4. I bought the bike after the engine had been bored and rebuilt. It has plenty of top end power but NO low end power what so ever. What can I do to fix this?

Good Top end power after the engine has been rebuilt and bored but has not low end power. It wont even move on take off at full throtle if I am facing up hill.

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Check your belt and clutches

Posted on Mar 11, 2013

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Posted on Jan 02, 2017

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SOURCE: I have a polaris 400 scrambler that won't start. I

First verify spark.This is done as easily as spraying a bit of ether(starting fluid) into the carb and then try starting it.If it does not fire (or want to start) then your problems are elsewhere.Otherwise your float may be stuck leaving your needle valve(which controls the fuel flow into the carb.) in the closed position.Sometimes just a light tap on the bottom side of the carb is all you need.Otherwise you will have to remove and dissassemble the carb to search for other issues.if the carb has a drain plug on the bottom of the float bowl try removing it to check if ther is any fresh fuel present.This will help verify the stuck float scenario.If the machine has been sitting for a long time prior to this starting attempt you may have to clean and possibly rebuild your carb due to old fuel deposits gumming up the various ports and passages therin.

Posted on Nov 03, 2009

  • 9 Answers

SOURCE: polaris 300 it will run get loud and die

2 strokes get loud before they run out of gas. check your fuel lines and carb to see if your getting enough fuel to the engine.

Posted on Dec 18, 2009

  • 3 Answers

SOURCE: I HAVE A 1999 POLARIS EXPL 400 THAT WILL NOT GO

The problem sounds like your speedometer. I just fixed mine with the following solution.

Pull the 6 pin plug from your speedometer, On the plug, short the brown wire with the Brown/White wire. Tape it up and do not place back on your speedometer.

Your speedometer will not work but your AWD will.

Let me know if this helps

Joe

Posted on Jan 18, 2010

Testimonial: "Yes it worked got to go fishing thanks have a great Day !!!"

  • 1 Answer

SOURCE: 500 polaris scrambler won't shift into gear. the

broken shiift fork and or engagement dog

Posted on Jan 22, 2010

  • 13 Answers

SOURCE: 4x4 wont engauge

this may just be an adjustment in the magnetic coil inside the hub. it is very complicated and precise. i would recommend having a polaris mechanic do it or atleast purchasing a service manual. they are generally $50

Posted on Feb 18, 2010

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Have a 2000 polaris scrambler 500 and only backfires and pops in reverse. drive has full powrer and starts great


your reverse over ride not working , u need to open switch box see if you have power to the switch when bike is running with a test light then with brake on and in reverse check the output wire to see if you have power out when depressed be sure you have the wheels up in the air when you do this for safety sake

Dec 31, 2016 | Polaris ATV

1 Answer

03 90cc polaris scrambler top end enter change with a 01 50cc polaris scrambler?


Hi ! for an informantion, please visit the website below. If you need more information about a specific electrical issue you can reach me at motor@motorpartstore.com
Motor Part Store Motor Parts Wholesale

May 06, 2016 | ATVs

1 Answer

Yamaha Timberwolf. How do I find model number to order parts?


I apologize - my answer to the previous question didn't really clarify your actual question - Your VIN can be found along the frame rail - left hand side - about a foot or so ahead of your left foot guard -

26028714-jbdqfs5232kzbw0rj532ox50-2-0.png

If it's still there - your model number is here:26028714-jbdqfs5232kzbw0rj532ox50-2-2.png

If you can read your VIN - and here's a tip to know you're getting the whole number and it's not rusted away a digit; your second digit should be a (Y) - if you write down your VIN, second digit is Y so you know the placement is right - the 10th digit is the year. And here are the breakdowns for that 10th Digit:

(For all Yamahas - not just the Timberwolf):
88 - J, 89 - K, 90 - L, 91 - M, 92 - N, 93 - P, 94 - R, 95 - S, 96 - T, 97 - V, 98 - W, 99 - X, 2000 - Y, 01 - 1, 02 - 2, 03 - 3

From 1992 - 1998 the Yamaha 250 4-stroke, shaft drive, trail bike was the Timberwolf.

From 1999 - 2004 the Yamaha 250 4-stroke, shaft drive, trail bike was the Bear Tracker.

*****SAME ENGINE, SAME TRANSMISSION, SAME REAR END, TIRE SIZE, PULL START - THINGS THEY DEFINITELY CHANGED IN 1999 WHEN THEY STARTED CALLING THEM THE BEAR TRACKER: - PLASTICS BECAME A LITTLE LONGER I BELIEVE; AND THE SEAT WITHOUT A DOUBT BECAME LONGER. THE CARB WENT TO A CONSTANT VACUUM - INSTEAD OF THE SLIDE CARB WHERE THE THROTTLE CABLE WENT THROUGH THE CAP LIKE THE TIMBERWOLF. HARD TO REMEMBER - BUT I THINK THE TIMING CHAIN TENSIONER BECAME UNADJUSTABLE - AND NOT MUCH ELSE CHANGED. IN 99 THEY EVEN KEPT THE BRAKING SYSTEM THE SAME. SOMETIME AROUND 2000, 01 OR SO THE BRAKE SYSTEM CHANGED FOR THE FRONT WHEN YAMAHA WENT TO DISC BRAKES. HOPE THIS HELPS. ANYTHING ELSE YOU NEED TO KNOW ABOUT YOUR TIMBERWOLF JUST LET ME KNOW - I'VE OWNED, REBUILT, BOUGHT, SOLD, TRADED A TON - I'VE CURRENTLY GOT A 99 BEAR TRACKER THAT IS THE MOST DEPENDABLE 250 4 STROKE I'VE EVER OWNED AND A 1996 YAMAHA WOLVERINE 350 4X4 - I'VE REBUILT THEM FROM THE BOTTOM TO THE TOP. THOSE BIKES ARE GOLDEN IF YOU TAKE CARE OF THEM AND DO A LITTLE ROUTINE MAINTENANCE. ALL THE BEST - JUSTIN MCCARTNEY

THE 99 I MENTIONED THAT I STILL HAVE:
26028714-jbdqfs5232kzbw0rj532ox50-2-5.jpg

A 98 I BOUGHT WITH THE ENGINE IN A MILK CRATE THAT I BOUGHT, REBUILT & SOLD:
26028714-jbdqfs5232kzbw0rj532ox50-2-9.png

A 2004 I BOUGHT, REBUILT AND SOLD:
26028714-jbdqfs5232kzbw0rj532ox50-2-14.jpg
All the best - let me know if you're ever in a jam with yours; not too much I haven't seen, fixed or had to deal with.

Dec 29, 2015 | ATVs

1 Answer

2001 Scrambler 400. What should compression reading be?


With the decompressor active, nominal is 85 - 90 psi. At 62 psi, you have a top end problem. Try dumping a bit of oil in the cylinder and re-test. If the pressure rises, you have a ring seal problem. That sounds like an top end rebuild.

Oct 28, 2015 | Polaris ATV

1 Answer

What could cause a 2001 Polaris Scrambler 500 to overheat?


restricted water flow around the engine flush it out with a hose pipe

Mar 01, 2015 | Polaris 2011 Scrambler 500 4x4

1 Answer

Polaris Scrambler won't idle when moving


If a tune up doesn't help, rebuild the carb. the ethanol in gas ruins the gaskets.

Sep 08, 2014 | ATVs

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