r/Dirtbike_Help

2023 yamaha

Got a 2000 rm125 bike was idling fine could possibly have run some 87 in the tank and ran it wouldn’t idle at after that tore apart the carb everything’s clean, when I was putting the bike back together I broke off my choke inside my carb but now it idles, with no choke inside the carb. Any ideas?

This is my 2003 KTM 125 SX and the kickstart broke off while kicking the teeth are practically gone on the kickstart, but am I able to just put a new kickstart on or are the teeth on the mechanism too broke down and will I have to buy a new kickstart mechanism?

i just bought this bike and the E start doesn't work (thankfully it has a kick starter and it works fine). it made a high pitched whirring sound and either took a while to crank the engine, or it didn't turn over at all, where i then had to kick start it. other times it would just start right up like normal. this lead me to believe the starter clutch sprag was worn down (part 7 on the diagram). it is supposed to spin one way but not the other, and i believe mine is worn and spins freely.

ignorantly i pulled it apart and replaced part #6 which i originally thought was the problem. ive also tested the battery and it sits at 12.7v and dips down to 11.5v when using e start which i believe is completely normal. the only thing i can think of is it being that one way bearing/sprag being worn or completely broken. please let me know your thoughts.

Is this a normal sound? It was a lot quieter but just started getting louder

this piston has 50 hours on it, but not from racing just medium-paced riding. it’s from a 2022 KTM 125 sx, and i need honest opinions whether to change it or not.
thanks in advance for any help

Hoping someone can help me with this,

Rebuilt this clutch about 6 times today ripping my hair out now,

1994 KLR250 / KL250D? UK / European.

The pressure plate bottoms out on the pins,

Can put the spring bolts in by hand (with a socket) all the way.

The inner push rod has about 20mm of free play up and down,

The actuator that the cable connects to doesn't do anything, likely just taking up that 20mm free play before bottoming out,

The friction plate stack (without steels) comes to 17mm, all 6 friction and 5 steel plates are in.

All parts are definitely present, checked against online exploded graphics multiple times, and are to my knowledge in the right places.

The clutch pressure plates arrow is lined up with the marking in the clutch basket.

Really lost on what could be causing my issues.

Any help or advice massively appreciated!

Looking for some help. Can’t seem to find it online anywhere. I took a part my carb to clean it. When reinstalling the throttle cable, it seems to be sticking when I fully seat it. Refer to the video. Looking for any help.

2019 KTM 250SX bike comes with bill of sale but no title. Has 156 hours and has had the top end rebuilt but not sure on the exact hour mark. Owner won’t go a dollar below $3,500. Most of the ones I see within a few hours of me are 2016 or older and typically $3,000 some with title some without.

Just recently got my first dirt bike on a trade. When taking a picture and searching it Google decides it’s a yz125, and I was told it was as well. Ran a bin check and the frame comes back as a 1993 rm125. I was told I t needs a new throttle cable and most likely a cdi. This is all I know so far but I don’t wanna mess with anything or buy parts until I know what it is exactly. Any help would be appreciated as I’ve only worked on minibikes and small quads so far.

This is my insanely clean 01 KX125
Freshly rebuilt with Wossener piston and replated cylinder
New Boysen reeds
Fresh gaskets all around, cases were split and entire engine has been inspected
New levers, chain and grips
FMF and Bills exhaust set up
New graphics
Let me know any input is appreciated!

Does fine at low rpm but power drops off and feels like redline. Klx110 big bore 26mm carb

Hey everyone,
The spark plug completely blew out of the cylinder head on my TJ Power Sports dune buggy and ripped the internal threads entirely clean.
I need advice on what to do and what spark plug because I can’t find the old one
Any ideas?

Can anyone tell me what the issue with my ignition points are, they won't open and close? I believe something is out of alignment or a previous owner installed the wrong parts.