Kymco 2008 Mongoose 250 - Answered Questions & Fixed issues

Hi Matt only help I can give is look along top & bottom of chain for a tensioner it will be a round rubber wheel. If you cant find a tensioner it will more than likely you need to cut the chain down. If your not sure how to let me know & i'll let you know how. Also DO NOT USE IT while chain is loose as if you do & chain comes off you can crack engine case which then means a new engine

Kymco 2008... | Answered on Jan 23, 2014 | 697 views

if your getting spark, compression and gas, check your mechanical and electrical timing.
Make sure there is plenty of charge in the battery.
Can you feel any suction on the carb when you cover the intake with your palm and crank the engine?
Can you feel the exhaust blowing as you crank?
If these are all OK you could have an issue with the ignition electronics.

ATVs | Answered on Nov 27, 2020 | 16 views

There may be one or more causes for the P0485 code. One is a faulty cooling fan. Another is that your fan control relay harness is shorted or open. Your fan control relay or fan control circuit may also suffer from a poor electrical connection.

ATVs | Answered on Nov 27, 2020 | 15 views

Leading up to our test of the 2019 Polaris Sportsman XP 1000, The past two seasons have brought about a number of small, but significant, changes, along with a rival that has been dramatically improved. Have Polaris' updates been enough to keep the Sportsman competitive? Watch on and find out. The Sportsman XP 1000 Premium Edition, new for 2019. We selected it since it is the most comparable model to our Limited Edition 2017 test quad, making evaluating updates easier. The Premium Edition features an upgrade from 26" to 27" tires, LED, 3rd brake light, cut and sewn seat cover, and painted plastic like our 2017 LE model. The Premium Edition also features a front bumper and 3,500 HD winch. The fact that the Sportsman is such a capable worker gives you an extra reason to purchase a machine that most want for its virtually unrivaled fun factor. It should certainly be a top choice for the power hungry rider looking for a comfortable ATV to put on lots of miles. Related Videos 2020 1000cc 4x4 ATV Shootout 2019 Can Am Outlander 1000R XTP Test Review Polaris Scrambler S Series Ep 2 Sportsman XP 1000 VS Scrambler XP 1000 S 2017 Polaris Sportsman XP 1000 Test Review 2019 Polaris Sportsman XP 1000 High Lifter Edition Test Review:

ATVs | Answered on Nov 25, 2020 | 16 views

Make sure the spring on the brake pedal that operated the park interlock hasn't stretched or come off the interlock, If the interlock and spring are ok,the problem most likely is behind the gear selector cover on the transmission. Water,moisture can get into this area and corrode the shift gears up or possible you could have broken tooth on one of the small gears

ATVs | Answered on Nov 22, 2020 | 169 views

yes and if its charging,,also make sure a groups are clean and grounded well

ATVs | Answered on Nov 22, 2020 | 12 views

If the soleniod engages and no starter motor run.....the solenoid is bad or bad starter motor not rap on the starter ......the permanent magnets are subject too damage ......replace the starter ..........

ATVs | Answered on Oct 22, 2020 | 27 views

Do not know where to begin. Does the engine have compression? Are the valves adjusted correctly? Is it getting fuel, fresh fuel? Is there a spare to the spark plug? Is voltage getting to the ignition system, all fuses ok?

ATVs | Answered on Sep 25, 2020 | 27 views

• There is a problem with one or more of the following:

1) Dead Cell In The Battery
2) Plug / Connection Came Loose / Bad Or Missing Ground Cable
3) Voltage Regulator
4) Stater Is Bad
5) Wiring Harness Has A Broken Or Grounded Wire

ATVs | Answered on Sep 05, 2020 | 64 views

It might be the spark plugs or plug , but it looks like a fuel, pressure, filter,and injector problems Changing the plug is really easy. If it still occurs , change out fuel and then check the fuel pressures.

ATVs | Answered on Aug 19, 2020 | 27 views

First check to see if it has a spark or fuel by spraying a little starting fluid into the throttle body. If it does not, check the fuse to the fuel pump. If it runs then you check to see if the spark is getting to the spark plug. If not check the fuses and connection to the ecm.

ATVs | Answered on Aug 11, 2020 | 156 views

Lube the shifter control box.

ATVs | Answered on Aug 08, 2020 | 140 views

Two possibilities. One is that the bulb is bad and the other is the gear indicator/wiring has a problem .

ATVs | Answered on Aug 08, 2020 | 126 views

Here is how to check the oil and more.

ATVs | Answered on Jul 30, 2020 | 30 views

To me it sounds like, possible fuel lines being clogged and maybe need replaced. If you can prime it, and it ??s for 5 to 10 seconds, sounds like its just not getting fuel fast enough or at all through the lines after the initial prime and fire up. Possibly a new fuel pump may be needed. But definitely a fuel system problem. Good luck

ATVs | Answered on Jun 18, 2020 | 53 views

Check for water in the fuel. Also check the carburetor bowl for fuel. You can disconnect the fuel line at the valve and run a bit of fuel out, make sure to run in both on and reserve position. The carb has a small fathead screw for a drain. Back it out a few turns to release the content of the bowl. Also check the air filter under the seat. Make sure it’s clean.

ATVs | Answered on Jun 16, 2020 | 62 views

Not finding what you are looking for?
Kymco 2008 Mongoose 250 Logo

1 questions posted

Ask a Question

Usually answered in minutes!

Popular Products

Top Kymco ATVs Experts


Level 3 Expert

85239 Answers

john h

Level 3 Expert

23504 Answers


Level 3 Expert

6115 Answers

Are you a Kymco ATV Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides