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LCH Added a reply to Jetting - YZ250
7/13/2024 2:38pm Isn't 32:1 a richer mix than 40:1? This is were I got my "stock" specs:
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SoCalMX70 Liked a reply to forum topic Jetting - YZ250
7/13/2024 1:17pm
Sorry, I misread your original post about the cylinder. If there isn't a mechanical issue with the power valve, I'd really go over that carb and make sure everything is clean/in good shape. It might need a rebuild.
This forum topic has 12 replies.
LCH Added a reply to Jetting - YZ250
7/13/2024 12:13pm My bad....pilot jet 50. I fixed it above. Needle is NV3F, 2nd position down. Moved it to 3rd position down and I think it got worse though I was messing with the air screw. Plug is nice light brown hue, almost copper colored. The bike had the original 250 cylinder (OEM) which is what I put back in it. Though...
LCH Started a new thread Jetting - YZ250
7/13/2024 12:09pm I have a 1999 YZ250 that I bought as a 300 big bore. I replated the original cylinder back to OEM 250, did a fresh top end and put the carb back to factory specs (main jet 172, pilot jet 50 and clip 2nd position down). The 250 cylinder is ported and polished and stamped PA. I did not do...
This forum thread has 12 replies.
LCH Started a new thread Yamaha YZ250 Cylinder/piston
6/21/2024 2:43pm Have a 300 big bore cylinder head and piston off a 1999 YZ250. Piston is labeled 71.94 and says MAGNUM on the underside of the piston. Bike started and ran flawlessly with this in it. I am putting the original cylinder back in to make it an original 250 and have no use for this. If you need more pictures...
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LCH Started a new thread WTB 1999 YZ250 plastics
4/26/2024 7:39am Seeing if anyone has a set of plastics with/without graphics kicking around. Don't need MINT but don't want beat to hell either. Just need a set to throw on a bike I'm selling soon.
This forum thread has 2 replies.
LCH Added a reply to WTB 1999 YZ250 plastics
4/26/2024 7:39am Thanks just ordered 👍👍
jerry atrick moto Liked a reply to forum topic WTB 1999 YZ250 plastics
4/26/2024 7:28am
UFO is having a sale 45% off plastics. Not a scam I’ve purchase several sets takes about 10 days to ship from them.
This forum topic has 2 replies.
LCH Added a reply to HGS Exaust for 04-15 Ktm125sx
4/25/2024 1:43pm Up
motofab36 Liked a reply to forum topic 05 YZ125 Clutch
4/8/2024 4:03am
Yes it sounds like you have a bad bearing on the mainshaft. You need to split the cases to inspect. Oem bearings are best, but a less expensive route hot rods has tranny bearing kits.
This forum topic has 7 replies.
LCH Added a reply to 05 YZ125 Clutch
4/7/2024 2:53pm Bringing this back to light as I'm now on to a whole other problem. As can see by the last picture, the clutch rods snaps as soon as the bike is started. When the bike is off, you can pull the clutch lever all day long. It has tension and actuator arm engages the clutch plates. As soon as it...
LCH Started a new thread 05 YZ125 Clutch
4/7/2024 2:49pm So picked up a bike. Guy had the clutch rod that engages the clutch basket snap. He's pretty sure he replaced that whole mechanism (rod, bearing, etc.) and even the arm on the left side that the clutch cable connects to. But there's no tension on the arm. See picture below. I can pivot that arm up and down with...
This forum thread has 7 replies.
LCH Added a reply to HGS Exaust for 04-15 Ktm125sx
3/24/2024 6:07am Up
LCH Started a new thread WTB Accumix
3/14/2024 4:11am Looking for 1 or 2 Accumix jugs. Can't find them anywhere.
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LCH Added a reply to HGS Exaust for 04-15 Ktm125sx
2/9/2024 3:53pm Up
LCH Added a reply to 05 YZ125 Clutch
1/28/2024 2:25pm Sum Ting Wong.
sandman768 Liked a reply to forum topic 05 YZ125 Clutch
1/28/2024 6:48am
It’s just a puzzle… pieces need to be in the right places….when the pushrod is installed into the clutch hub, reach over to the actuation arm, the cable attaches to, pull on actuator to set the pushrod into the slot, you should then be able to move the actuator & feel the pushrod moving in/out. Make sure the ball bearing is inside the top hat, this is often the forgotten piece….
This forum topic has 7 replies.
sandman768 Liked a reply to forum topic 05 YZ125 Clutch
1/28/2024 6:48am
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This forum topic has 7 replies.
jhansen510 Liked a reply to forum topic 05 YZ125 Clutch
1/28/2024 4:26am
Its been a long time since I have had a yz 125 but I had a similar issue once. I think there may be a ball bearing that goes on end of rod or the rod has to be situated a certain way. I dont recall exactly but it definitely was that I assembled it wrong and ended up being an easy fix.
This forum topic has 7 replies.
sandman768 Liked a reply to forum topic 05 YZ125 Clutch
1/28/2024 4:26am
Yes, you should not be able to pull that arm all the way up with no resistance… something is assembled wrong or missing altogether… pull clutch cover, clutch spring bolts and remove pressure plate, remove top hat & pull push rod out to start diagnostics… go online or get service manual for proper assembly schematics….
This forum topic has 7 replies.