Honda Fourtrax TRX 300 trx300 - Top End Rebuild, Cam Piston Cylinder Head Valves - Pulled
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- Опубліковано 9 лют 2025
- In This video we are inspecting and disassembling a Honda Trx 300 Fourtrax top end with some tips on going back together.
Engine Tear Down Video:
• Honda Fourtrax TRX 300...
Carb Kit: amzn.to/36UCiOh
Engine Oil: amzn.to/2IHhEcp
Service Kit: amzn.to/3lMLbzD
Quality CDI: amzn.to/2IWw1Ji
Battery: amzn.to/333Tj7C
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Also more common repairs with the Honda ATV check out:
• How To - Install Kicks...
• Honda Fourtrax 300 - t...
• Honda Fourtrax TRX 300...
• Honda Fourtrax TRX 300...
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We Disassemble: Clutch Head Cover Cylinder Piston Stator Points Rotor Magneto Generator Alternator Coil Camshaft Cam Chain Tensioner Rocker Electrical Cases Bottom End Case Set Transmission Shift Drum Fork Gear Shaft Flywheel Starter Idler Clutches Bearings U Joint Yoke Driveshaft Shaft Float Main Jet Bowl Slide Needle Seat Intake and more Assembly
Do you have a video putting the top end back together?
What size are those Allen bolts on the head bolts 3 of them?
I will be replacing seals in the top end rocker cover (what Im calling rocker cover since it's the top half of the head). Since Im not removing the cylinder like you, I wouldn't need to remove the guide tensioner correct? Also is there anything I need to worry about as far as anything needing TDC or anything when taking off the rocker cover or reinstalling? I'm thinking not since its just the cover. I believe I just need to clean off old Hondabond replace the two seals in the rocker arm shafts (terminology? 😂). Clean surfaces, reapply hondabond. Now would I need to replace the two copper washers/seals on the oil line and also the copper washer/seal thats on one of the rocker cover bolts on the left side? This is my first time tearing an atv engine apart btw
Anybody know where I can get all the bolts for the top end? Or what they all are.
What size were those Alan wrenches that you used to take off the three bolts
The two flat bolts at 3:54 are leaking on my wheeler. I’m not sure what’s wrong with it or how easy of a fix it will be
How many washers goes under the acorn nuts that hold the cylinder down. Is it 2 of 4
Steve, only 1 washer under the nut is necessary. Thanks for the comment!
@@MidNebraskaMotorsports does all 4 nuts get washers was my question
YES all 4 get a washer. sorry I misunderstood your question. Thanks again.
Nice vid
@@MidNebraskaMotorsports ok thanks
Damn you live really close to me haha I just bought a fourtrax right outside Hampton that needs a top end rebuild trying to find someone to do it
Does it matter which way the cam is put back to gether? I see two dots on the center shaft of cam. I assumed the two dots needed to point upward. The timing is off and that is the only thing I can think of.
Good video thank you.
Well they added that one that time oh, I have a 1990 Honda FourTrax 300 and I was just trying to fix my oil leak on the right side where the kick-start is and I took it apart I held in the the kick-start thing but the bottom one fell out but I put it back in correctly my friend comes over there and tells me to put it in a certain way and I trusted him but he never Twisted it and locked it in between the two tabs and so I fixed it I set the timing I set the triangle to the dot. I got the kick start facing almost directly up and when when it was messed up first I started it you can hear the thing making all kinds of noise from the kick-start so I took it apart fixed it correctly and now I have no noise I revved it up and everything was good but I have no gears no forward gears no reverse gear so no gears at all. I was wondering if there's any way you can give me advice, oh and another thing is I was mad cuz I just installed a new ignition switch. I have four colors one black one red to Pink's one with the white tracer and I believe the Reds hot the pink with a white tracers hot and the blacks a ground and I'm not sure what the other pink one is 4 and I can't remember how I had it on a toggle switch. I really hope you get this message I really need help. I just need to know why this happened how could it not have gone right what did I do wrong. P. L. E. A. S. E. H. E. L. P. M. E............MID Nebraska's MOTORSPORTS
My 91 keeps getting gas in the oil, swapped carb, wasn't unless 3rd carb bad too, wondering if might need rings, sure never been apart..
Hey I need your help with Honda
Copy that. What do you got for me? If you are needing parts, check out: www.ebay.com/str/midnebraskamotorsports
I'm not getting spark I put new coil and plug and still nothing what could it be
Have you watched?? ua-cam.com/video/e7cboWDOQKY/v-deo.html. This video will answer all your questions. Thanks for watching.
Do you have a video on how to do timing on this engine
@@MidNebraskaMotorsports Ok thanks
@@MidNebraskaMotorsports I would also like to know how to check if the chain tensioner is fitted correctly if you could show that you would be a living god
Do you have a video on doing timing on this?
Timing is easy wtf
Hey so I’m having a problem with my Honda trx300ex and i was wondering if you could help me, it’s been leaking oil from a plastic cap on the cylinder head and I don’t know where to start.
Mid Nebraska Motorsports is it just a matter of pulling out the plastic cap?
Mid Nebraska Motorsports I’ve been trying it doesn’t really wanna move much so I’m scared of breaking it
@@leija749 the valve cover has to come off to get it out
Getting ready to start a rebuild on mine. Is it necessary to pull the motor?
Thanks for watching Brandon. If you are just rebuilding the top end you don't need to pull the motor. Let me know if you have any other questions. www.ebay.com/str/midnebraskamotorsports
Good video; but not enough light, and not enough close ups.
@@MidNebraskaMotorsports When you get it all set up, hope you do another remake video on the Fourtrax 300. Thanks
Hey MID NEBRASKA MOTORSPORTS, I sent you three messages and I don't see them on your comment board oh, I'm just really hoping that you see it and that you can help me.
Do you know the engine specs
Mid Nebraska Motorsports all of them please.
How the hell did you not strip anything
I’m tearing a 2000 trx300ex and didn’t strip andything
Was you racing somebody? You seem to be in a hurry.
What
Who
Well they added that one that time oh, I have a 1990 Honda FourTrax 300 and I was just trying to fix my oil leak on the right side where the kick-start is and I took it apart I held in the the kick-start thing but the bottom one fell out but I put it back in correctly my friend comes over there and tells me to put it in a certain way and I trusted him but he never Twisted it and locked it in between the two tabs and so I fixed it I set the timing I set the triangle to the dot. I got the kick start facing almost directly up and when when it was messed up first I started it you can hear the thing making all kinds of noise from the kick-start so I took it apart fixed it correctly and now I have no noise I revved it up and everything was good but I have no gears no forward gears no reverse gear so no gears at all. I was wondering if there's any way you can give me advice, oh and another thing. I just installed a new ignition switch and I have four colors one black one red one pink with a white Tracer and a pink one and they're on a toggle switch first but I can't remember where they were on the title switch so I was wondering if you could tell me I think the red pink with the white tracer and that's hot but the black is ground and I'm not sure what the pink wire solid pink wire is for so I'm hoping you can help me man. Is any amount of help anything. Thank you dude
That’s the longest run-on sentence I’ve ever seen in my entire life. Congratulations.
I have a 300ex and just tore the top end down. The piston has a lot of side to side movement on the wrist pin. Is this normal?
they usally have some but shouldn't be alot