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HARD to START 2002 Honda XR 400R CARBURETOR HOW TO remove clean rebuild upgrade dirtbike JETTING FIX 

Jeff's Little Engine Service
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Very HARD to START dirtbike 2002 Honda XR 400R CARBURETOR HOW TO remove clean rebuild UPGRADE modify replace JETS proper jetting ( what size jets ) to increase performance ( Gordon's Mods ) and make it MUCH EASIER STARTING Common problem same procedure on many years makes and models main jet pilot slow jet float needle valve float adjustment remove snorkel
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PLEASE KEEP IN MIND when you are watching my videos: I am showing you the least expensive, quickest "backyard" methods for repairing or servicing your lawnmower or equipment. Replacing all components such as gaskets and fuel lines is always recommended when rebuilding or repairing equipment. With these videos I hope you are able to fix and repair your lawnmower pressure washer generator or motorcycle yourself with minimal parts, knowledge and tools. Thank you for watching!
KEYWORDS : 1997 1998 1999 200 2001 2002 2003 2004 xr400r xr 250r 200 450 motorcycle dirt bike yamaha kawasaki suzuki gas gas husqvarna ktm check fixing and repair common problem mixture screw problems. Review thoughts tips advice troubleshoot wont won't why carb motorcross motocross carburetor clean piston valves spec specification capacity much gas fuel petrol belt motor model choke fuel spark capacity oil why when where what size jets shows whats diagnose service inspect check tank watch replace take put on off does can dies stalls compression release parts diagram Craftsman atc atv Poulan adjust adjustment Yard Machines koler kohler tecumseh briggs and stratton straten stratten John Jon Deere Deer Scott's Scotts motorbike air filter gasket Cub Cadet Toro troy-bilt troybilt Troybuilt troy built bilt Ariens rider tool tools Jonsered ohv intek single twin Gravely Snapper Hayter Lawnboy Mountfield lowes home depot walmart seafoam grip tools will it run work rebuild turbo cool lawn mower repair small service oil gas spark cold starting gordons mods modification gordon snorkle air how to washougal cold blooded hard

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5 сен 2024

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Комментарии : 71   
@HaywardFamilybuilding
@HaywardFamilybuilding 5 месяцев назад
Believe it or not you can take the carb out with out removing the sub frame or anything else. The trick is to remove the bolts on the rubber part between the carb and the engine. Then the carb will come out
@JeffsLittleEngineService
@JeffsLittleEngineService 5 месяцев назад
Thanks friend, I will try that way next time
@davidcox692
@davidcox692 Год назад
I bought one of these in 1999 brand new and always had a problem starting it, ended up selling it with only 600 miles on, shame I didn't see your video then lol
@solarwindnomad3083
@solarwindnomad3083 11 дней назад
Congrats, that XR is starting easy, or your skill is expert level. Mine only starts with starter spray for now, I changed already Fuel Tank switch which was very clogged. Now I'm dismanteling Carb.... Thanks for your instruction video !
@jeffrichards8054
@jeffrichards8054 Год назад
Thanks! This was just what I needed to motivate me to clean up my '04 xr400 carb. I didn't re-jet, just cleaned many years of varnish and crud out of entire carb and plugged jets. My formerly hard to start wonder bike started after 5 prime kicks and one start kick! Running great again!
@JeffsLittleEngineService
@JeffsLittleEngineService Год назад
The larger jets really helped me out with the hard starting too
@gti20vtMarcel
@gti20vtMarcel Год назад
Hi Jeff, the screw in the front is for the air adjustment and the diaphragm is the air cut-off valve, further you're missing the plastic splash guard (against fuel surge in rough terain) that goes around the main jet, clear vid! 👍
@JeffsLittleEngineService
@JeffsLittleEngineService Год назад
Excellent info friend Thank you! I did not what the small diaphragm was for.
@frankiemarchese2978
@frankiemarchese2978 Год назад
The screw in the front is actually a fuel adjustment, not air. Air screws are located on the intake side of the carb, fuel screws are on the engine side
@gti20vtMarcel
@gti20vtMarcel Год назад
@@frankiemarchese2978 Not on a XR carb, to be exact i was talking about the Air/Fuel idle mixture srew! Calling it only a air screw you are right but most people understand what was meant. 😉
@frankiemarchese2978
@frankiemarchese2978 Год назад
@@gti20vtMarcel I understand what you meant 👍 but it is a fuel mixture screw, it only meters the amount of fuel going through. For example, an xr80r has an air mixture screw on the back of the carb because it meters the air going through. Most 2 strokes have an air mixture screw too. Its never both a fuel/air mixture screw, its one or the other. My xr100r and 400r has a fuel screw ⛽️
@gti20vtMarcel
@gti20vtMarcel Год назад
@@frankiemarchese2978 Okay, and turning the screw in means leaner allthough in a 2 stroke turning in the Air screw in is for a richer mixture. ✌️
@kiddhartwell1312
@kiddhartwell1312 Год назад
You're a scholar and a gentleman good sir!, thank you for this vid!
@JeffsLittleEngineService
@JeffsLittleEngineService Год назад
Glad it was helpful! Thanks friend
@tkinson
@tkinson Год назад
Gorgeous dog!
@robertmailhos8159
@robertmailhos8159 Год назад
Running like a top now 👍
@JeffsLittleEngineService
@JeffsLittleEngineService Год назад
It was ridiculously hard to start and was running waaay too lean apparently. Thanks for watching Robert and thanks for commenting
@robertmailhos8159
@robertmailhos8159 Год назад
@@JeffsLittleEngineService you are welcome young man 👍😎
@squirrelcam
@squirrelcam Год назад
love the chooks!
@Philisnotretired
@Philisnotretired 8 месяцев назад
My carb has a plastic piece that fits on the main jet - an anti-cavitation, anti-splash thingy. I noticed you don’t have one. Is it unnecessary?
@JeffsLittleEngineService
@JeffsLittleEngineService 8 месяцев назад
Good question. I ride my bike hard offroad, on the street and on a track sometimes and it has always ran perfect since I rejetted it. I usually trust Honda/Mikuni engineers but I would say due to experience it is not necessary.
@StansE250
@StansE250 10 месяцев назад
Hey Jeff ! Thanks for the vid 👍🏼 Very Thorough, well-prepared presentation (no ummm, uhhs,). I’m moving to OR early November. Been ‘shopping’ for a ‘97-‘04 XR400R. Might get one in SoCal before, or wait. How hard is it to get (dirt) bikes plated there ? For Dual Sport use ….
@JeffsLittleEngineService
@JeffsLittleEngineService 10 месяцев назад
Hi friend! unfortunately Oregon does not allow dirtbikes to be plated. Washington does with appropriate modifications like turn signals, D.O.T. approved headlight and freeway speed rated tires. Some local motorcycle shops do the one time approval process/inspection and can help you make the right mods to get license plates.
@StansE250
@StansE250 10 месяцев назад
@@JeffsLittleEngineService CRAAAAPP ! Thanks for the info 😩
@1176hambone
@1176hambone 9 месяцев назад
clean carb, jet correctly, set float height, adjust valves.
@markr3140
@markr3140 Год назад
Job to do, thanks for sharing! Think mine is too lean, seems standard on these!! Cheers
@JeffsLittleEngineService
@JeffsLittleEngineService Год назад
Yep I agree. Thanks for watching!
@claytontycksen9472
@claytontycksen9472 Год назад
Great video, Jeff! I love how you got the camera angles up close so we can see what you're doing. Where did you order your jets and replacement float valve from?
@JeffsLittleEngineService
@JeffsLittleEngineService Год назад
Needle valve was from a Honda dealer and the jet kit was either Amazon or Ebay
@JeffsLittleEngineService
@JeffsLittleEngineService Год назад
Thanks for watching everyone!
@petebaumbach7944
@petebaumbach7944 Год назад
thank you for this .. really helped .. Pete from UK
@JeffsLittleEngineService
@JeffsLittleEngineService Год назад
Glad it helped. I love my XR's!
@MAJ_TADean
@MAJ_TADean Месяц назад
Seems like the long way to dismantle it. Wouldn’t taking the I take bolts out be easier and quicker?
@michaelfernandez688
@michaelfernandez688 Год назад
LOVE the video! Thank you for posting it and doing a great job at explaining everything. I have owned my 2002 XR400 for 10 + years and I never did a carb clean or rebuilt. Went to start it up and it is now time as it leaks a lot. Any recommendations on what else to replace or add while I have the carb taken apart? Newbie here, trying to make sure I do everything now and don't forget to clean or add any used parts that may fail in the near future. Can you also drop a link or elaborate on where you bought your items from Ebay? There are so many choices
@JeffsLittleEngineService
@JeffsLittleEngineService Год назад
If it is leaking it wiill need a new float needle. All Genuine Honda parts for the most part. I believe the jet kit was an Ebay purchase.
@mr1pearl
@mr1pearl Год назад
This is how we due it la la la la la la la 🎶🎵 sorry just watched the masked singer 🤷 I got to do my Yamaha 125 and I've been putting it off for ever but now I'll just put it off some more 😆 Nooo I'll get it 👍
@FloridaDualSport
@FloridaDualSport 6 месяцев назад
Thx for a great video!
@JeffsLittleEngineService
@JeffsLittleEngineService 6 месяцев назад
I hope it helped! thanks for watching
@EstebanEliasAguirreMartinez
@EstebanEliasAguirreMartinez 8 месяцев назад
Hi anyone knows where can i find nedle seat for xr 400 2002 ? It needs to be replaced , thanks
@JeffsLittleEngineService
@JeffsLittleEngineService 8 месяцев назад
From Honda or Ebay.
@jimellis1810
@jimellis1810 8 месяцев назад
That side cover with the spring/rubber looks like an air cutoff valve to prevent backfiring when you let off the throttle. They do go bad once in a while.
@JeffsLittleEngineService
@JeffsLittleEngineService 8 месяцев назад
Good info!
@IsleOfADV
@IsleOfADV Год назад
I know the XR 250/ XR400 dies if you touch the throttle on cold starts and hard to start on cold starts, but all I wanna know is does the fuel efficiency change by a huge amount if you change the jet sizes ?
@JeffsLittleEngineService
@JeffsLittleEngineService Год назад
Not real noticeable to me definitely worth the modification for ease of starting and more all around horsepower.
@gertkristensen6451
@gertkristensen6451 Год назад
good job
@JeffsLittleEngineService
@JeffsLittleEngineService Год назад
Thanks friend
@Handelson
@Handelson Год назад
Jeff, thank you for this video. Question: i just bought an '03 XR400, it starts fine and idles for a minute and then dies with a gasping sound. Does that sound like a carburetor issue?
@JeffsLittleEngineService
@JeffsLittleEngineService Год назад
yes most likely
@milkcam
@milkcam Год назад
@@JeffsLittleEngineService My 2001 XR400 throttle gets stuck when riding and also dies on idle. It’s backfiring loud as well. Any ideas?
@markr3140
@markr3140 Год назад
⁠@@milkcam carb needs a clean / service. Check the diaphragm isn’t split, as the back firing is normally caused by that but also sounds like the needle is sticking
@jamesringler987
@jamesringler987 11 месяцев назад
That sounds like a restricted midrange jet or too lean
@MartinTapperMedia
@MartinTapperMedia 9 месяцев назад
Like because chicken intro
@MrCleanEmpire
@MrCleanEmpire Год назад
Wait why did you replace the jets? I was looking at a 03 that's for sale but all that work to get the carb cleaned out makes me rethink my decision about buying it as my first bike, you think a 98 Yamaha WR400 would be a better option?
@JeffsLittleEngineService
@JeffsLittleEngineService Год назад
I love the XR's 250's and 400's.. I am not familiar with riding a WR. Working on a WR would be somewhat similar to working on an XR I would guess.
@kumaclimber
@kumaclimber Год назад
How did you get those plated? I'm in Oregon and really really want to plate mine
@JeffsLittleEngineService
@JeffsLittleEngineService Год назад
You can do it in Washington just need lights, brake switch stoplight and highway tires
@FloridaDualSport
@FloridaDualSport 6 месяцев назад
I have a 2023 in Florida. Plated in south dakota. EZ
@FloridaDualSport
@FloridaDualSport 6 месяцев назад
Sorry. Meant a 2003 xr400 plated in S. Dakota
@kylechupick2232
@kylechupick2232 Год назад
Any clue how to fix the idle to full throttle bog? Besides raising the idle
@JeffsLittleEngineService
@JeffsLittleEngineService Год назад
I would recommend as full carburetor cleaning and or rebuilding/adjusting the carb
@SOLDOZER
@SOLDOZER 5 месяцев назад
I had a 98 XR400 back in the day. It was a pain to start.
@JeffsLittleEngineService
@JeffsLittleEngineService 5 месяцев назад
Yes, it seems they are all hard to start unless the carb jets have been replaced
@michaelfernandez688
@michaelfernandez688 Год назад
Hey Jeff, any chance you can respond?
@benkanobe7500
@benkanobe7500 Год назад
Where did you order your Jets and Niddle Valve from?
@JeffsLittleEngineService
@JeffsLittleEngineService Год назад
I got them on Ebay
@jjjuarez312
@jjjuarez312 Год назад
Sounds like slack in the timing chain or vavles out of adjustment...
@JeffsLittleEngineService
@JeffsLittleEngineService Год назад
I will check, thanks for the tip
@santiagopenaloza9401
@santiagopenaloza9401 Год назад
💪💪🇯🇵
@rickyrickharris4908
@rickyrickharris4908 Год назад
Ya that wasn't warmed up at all hahha
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