Question about 2005 Yamaha WR 450 F

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G'day,i have a 05 wr 450, when out riding my battery went flat, the old girl still had balls for a while then i lost it , felt like she was missing, would the batt cause the the bike to lose power ? thanks.

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Charging system has failed. In that case, the battery will run the bike until it's dead. If you can shut off your headlight, it my go a bit farther, but you need to fix the charging system.

Posted on Aug 22, 2010

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I have a 2004 wrf 450 r it runs fine but after about 5 mins the pipe glows red how can I fix it...

Hi, Anonymous a WR is an Enduro bike designed to run flat out that being said if you are strolling down some scenic trail at a slow pace or letting the bike idle for a few minutes your header pipe will turn cherry red, why you ask? It is not a street bike, it is designed for competition and weight is a major factor all necessary components are of the smallest and lightest design necessary to maintain performance under extreme conditions ie. small radiator and inside frame oil reservoir that doesn't get cooled, the majority of your riding needs to be at high speed. 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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Oct 12, 2016 | Yamaha WR 450 F Motorcycles

1 Answer

Dtr 125 05 want charge battery new battery new regulator rectifier fitted is it the stator i need to change thanks

I would inspect the slip rings on the armature/rotor first to see if they are clean and not burnt. IF the brushes are in the regulator unit ok but if separate check condition of the brushes

Aug 16, 2013 | 2004 Yamaha WR 450 F

1 Answer

Check tps on 2007 wr450

Hi, Gerard 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. 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.
3. Spark plugs in bad condition or partially fouled.
4. Spark plug cables in bad condition and leaking check for spark leakage in the dark
5. Spark plug gap too close or too wide.
6. Faulty ignition coil, module, and or sensor.
7. Loose, dirty, or corroded ignition module connector at crankcase.
8. Faulty CKP or CMP, MAP, ETS, ATS, TPS, O2 sensor.
9. Dirty air filter.
10. Intake air leak.
11. Water, dirt, or rust in the fuel system, carburetor and/or filter.
12. Old dead or bad fuel.
13. Fuel tank vent system plugged or carburetor vent line closed off.
14. Vacuum line from intake manifold to fuel valve is broken, cracked, pinched, or missing.
15. Carburetor controls misadjusted.
16. Damaged carburetor.
17. Incorrect valve timing.
18. Weak or broken valve springs.
19. Damaged intake or exhaust valve.
20. Check for engine trouble codes
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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Jul 10, 2013 | 2007 Yamaha WR 450 F

1 Answer

Derestricting 05 model wr450 exhaust

Usually pull exhaust pipe off at cylinder head and remove a restricting device there.

Dec 01, 2009 | 2005 Yamaha WR 450 F

1 Answer

I am haveing trouble with mr 07 wr 450, elec start

I would replace the Rectifier. Easy fix. Good luck

Oct 06, 2009 | 2005 Yamaha WR 450 F

1 Answer

Stagger/stammer/flat spot when going to WOT

The slide needle setting is probably to blame. Move the needle clip one notch lower. This will feed more fuel sooner to better match the in-rush of air from the rising slide. Also be sure the carb and carb manifold bolts are tight.

Carb modifications keep the designers employed.

Pleas rate this answer. Thanks!

Apr 06, 2009 | 2005 Yamaha WR 450 F

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