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Hi, Anonymous for this scenario you will need your service manual that has all fastener torque specs and a wiring diagram on the back pages, parts fiche, and owners manual if you can't find the best tool you ever bought for your Lifan, despair not, for a mere zero $0 you can download another one.
For more information about your issue and valuable "FREE" downloads that you will need for viewing or printing please click on the blue links below. Good luck and have a wonderful day.
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2008 Lifan LF400... | Answered on Sep 14, 2018


Hi, Randal and the usual suspects are:
1. Idle port, transfer ports, slow air jet clogged.
2. Idle adjusting screw set too low.
3. Air fuel mixture adjustment too lean.
4. Pilot/slow fuel jet clogged.
5. Faulty accelerator pump.
6. Float level too low.
7. Float bowl contaminated old fuel, water, dirt, rust, etc.
8. Carburetor bowl vent line clogged/blocked/pinched.
9. Fuel line to carburetor kinked or pinched.
10. Fuel filter clogged.
11. Intake manifold leak.
12. The gas cap is not venting properly or fuel tank venting system blocked.
13. Vacuum line from intake manifold to petcock broken, cracked, or not attached, carburetor vent line plugged.
14. Needle and seat stuck closed in the float bowl.
15. Multi carburetors not in sync.
16. Faulty fuel pump or internal fuel line has pinholes.
17. Fuel injectors clogged or faulty.
18. Faulty throttle position sensor.
For more information about your issue and valuable "FREE" downloads that you will need for viewing or printing please click on the blue links below. Good luck and have a wonderful day.
Bike idles perfect but dies when given the slightest amount of throttle 93...
Bike dies when you give it throttle
Lifan Repair Manual
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Lifan... | Answered on Jul 08, 2018


No. However it most likely has a rev-limiter to prevent overrevving/damage.

Lifan... | Answered on Apr 02, 2018


Hi, Aidan and the usual suspects are:
1. Fouled spark plugs.
2. Severely discharged or a damaged battery should have 12.5 volts or more and be able to pass a proper "LOAD" test if necessary, you may have a preliminary reading of 12.5 volts or more but little or zero amperage the battery is faulty and must be replaced, AGM batteries fail in this scenario more so than lead-acid batteries.
3. Check battery terminals for damage or corrosion, check the battery cables at "BOTH" ends for loose, corroded, or broken connectors, "INSIDE" and outside the cable harness, perform connector wiggle test and check cables with an ohmmeter if necessary.
4. Loose connection at ignition coil or plug between ignition sensor and module.
5. Spark plug cables in bad condition, shorting/leaking, spark plug cable connections loose check for spark leakage in the dark.
6. Faulty ignition coil or electronic control module.
7. Faulty pulse coil.
8. Faulty CKP, CMP, or BAS sensor.
9. Faulty ignition switch.
10. Tilt sensor needs a reset.
11. Security alarm failing to disarm needs reset
For more information about your issue and valuable "FREE" downloads that you will need for viewing or printing please click on the blue links below. Good luck and have a wonderful day.
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Lifan... | Answered on Oct 31, 2017


Hi, Marnix_prinz the answer to this question is way above my pay grade for this situation, I would call or visit my local dealer or reputable shop's service/parts department and inquire about any possible quick fix, answers, or parts inquiry.
Good luck and have a wonderful day.
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Lifan... | Answered on Oct 04, 2017


Hi, Anonymous you have some serious electrical issues not really for the inexperienced but you are willing to take a shot at it, all the information you will need to fix your bike is in the checklist and the blue links below and the usual suspects are:
1. Severely discharged or a damaged battery, should have 12.5 volts or better and be able to pass a "LOAD" test if necessary.
2. Failed alternator/generator and or voltage regulator.
3. Loose or corroded battery terminals and or cables especially the "NEGATIVE" cable, look for loose, corroded, or broken connectors inside the cable harness at "BOTH" ends.
4. Failed main circuit breaker or ignition switch, check for loose connections and continuity.
5. Failed system and or ignition relay, check for continuity.
6. Failed ignition coil, stator, magneto, points/condenser ignition/electronic module.
7. Failed CKP, CPS, CMP, MAP, TPS, or BAS sensor, corroded, loose or broken wire connector pins/sockets.
8. Throttle cables and or idle speed improperly adjusted hot idle speed should be 950 RPM to 1000 RPM.
9. Air/fuel mixture screw improperly adjusted.
10. Accelerator pump damaged or not working.
11. Water or dirt in the fuel system, carburetor or filter.
12. Restricted, blocked or kinked fuel line.
13. Fuel tank empty.
14. Fuel tank contaminated with ethanol sludge.
15. The gas cap is not venting properly or fuel tank venting system blocked.
16. Vacuum line from intake manifold to petcock broken, cracked, or not attached, carburetor vent line plugged.
17. Needle and seat stuck closed in the float bowl.
For more information about your issue and valuable "FREE" downloads that you need please click on the blue links below. Good luck and have a wonderful day.
Scooter just suddenly stalls while riding
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Lifan... | Answered on Mar 21, 2017


Hi, Kinkkush1993 nice novella it is normal on a new bike's first oil change to get a small amount of aluminum flashing in the oil filter any metal ants that stick to a magnet "NOT GOOD" you have an internal part failing, for this situation I would call my local dealer or reputable shop's service/parts department and inquire about any possible quick fix, answers, or parts inquiry. For more information about your issue and valuable "FREE" downloads that you will need please click on the blue links below. Good luck and have a wonderful day.
Lifan 125GY 5 Owner Manual
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Lifan... | Answered on Mar 05, 2017


Hi, Connie you can cut off 1 inch from the bottom of the front fork springs and fabricate rear shock lowering brackets finally you could remove some seat padding for more information about your question and valuable "FREE" downloads that you will need please click on the blue links below. Good luck and have a wonderful day.
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Lifan... | Answered on Feb 13, 2017


Hi, James and the usual suspects are:
1. Idle circuit and transfer ports clogged.
2. Air fuel mixture adjustment too lean.
3. Pilot jet clogged.
4. Faulty accelerator pump.
5. Float level too low.
6. Float bowl contaminated old fuel, water, dirt, rust, etc.
7. Float bowl vent or overflow tube clogged.
8. Fuel flow to carburetor restricted.
9. Intake manifold leak.
10. The gas cap is not venting properly or fuel tank venting system blocked.
11. Vacuum line from intake manifold to petcock broken, cracked, or not attached, carburetor vent line plugged.
12. Needle and seat stuck closed in the float bowl.
13. Multi carburetors not in sync.
For more information about your issue and valuable "FREE" downloads that you will need please click on the links below. Good luck and have nice a day.
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Lifan... | Answered on Feb 01, 2017


Hi, Dylan that would depend on the availability of oversize pistons, traditional performance mods are:
1. Free flowing air cleaner.
2. Carburetor Jet Kit.
3. Performance camshaft
4. Performance exhaust system. For this situation, I would call my local dealer or reputable shop's service/parts department and inquire about any possible quick fix, answers, or parts inquiry. For more information about your issue and valuable "FREE" downloads that you will need please click on the links below. Good luck and have a nice day.
http://www.chinariders.net/showthread.php?t=1555
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2008 Lifan LF200... | Answered on Dec 26, 2016


Hi, Justin could be your carburetor and the usual suspects are:
1. Idle circuit and transfer ports clogged.
2. Air fuel mixture adjustment too lean.
3. Pilot jet clogged.
4. Faulty accelerator pump.
5. Float level too low.
6. Float bowl contaminated old fuel, water, dirt, rust, etc.
7. Float bowl vent or overflow tube clogged.
8. Fuel flow to carburetor restricted.
9. Intake manifold leak.
10. The gas cap is not venting properly or fuel tank venting system blocked.
11. Vacuum line from intake manifold to petcock broken, cracked, or not attached, carburetor vent line plugged.
12. Needle and seat stuck closed in the float bowl.
For more information about your issue and valuable "FREE" downloads that you will need please click on the links below. Good luck and have nice a day.
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Starts and Runs but Dies When put in gear YSR 50
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Lifan... | Answered on Aug 17, 2016


Sometimes gas leaks appears to be leaking in one place when it is actually leaking from another place. I assume that the fuel feed is by gravity from the tank to the filter and to the carburettor. Did you check the hose that is attached to the bottom of the tank? it may be ruptured; check both clamps and make sure that there are no shavings to the hose.
good luck

Lifan Energy... | Answered on Apr 23, 2016


Hi, William and the usual suspects are:
1. Dirt or other foreign matter between float valve and its seat.
2. Float valve sticking.
3. Float valve and/or valve seat worn or damaged.
4. Float misadjusted.
5. Float cracked, leaky or damaged.
6. Excessive "PUMPING" of hand throttle grip.
For more information about your issue and valuable "FREE" downloads that you will need please click on the links below. Good luck and have a nice day.
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Lifan... | Answered on Apr 15, 2016


of course!!!If you buy a motorcycle, need in motorcycle accessories, you can refer to the below website.
http://www.motorpartstore.com.Good luck and have a nice day

Lifan... | Answered on Apr 11, 2016


It could be timing off, miss firing ona cylinder, exhaust blocked. when running there is a vacuum on the intake manifold any of the issues i mentioned will cause back pressure. Check also intake valve clearances

Lifan Pro-Series... | Answered on Feb 11, 2016

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