Honda Rancher 350 Top End Rebuild Part 1: Engine Teardown | Partzilla.com
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- เผยแพร่เมื่อ 20 ก.ย. 2017
- Find the parts for the Honda 350 Rancher engine teardown: bit.ly/honda-rancher-engine-te...
Part one in our Honda Rancher 350 top end rebuild series begins with taking the motor apart. In the video, John will show you the Honda Rancher engine teardown piece by piece. Learn how to do a compression test on the Honda Rancher, which leads us into the disassembly of the engine after diagnosing a compression issue. We’ll remove the battery, fuel tank, and plastics in order to get to the engine where the real fun starts.
John will walk you through removing the exhaust system, the valve cover, and then locating top dead center on the Rancher 350. Then, he’ll pull the engine apart to isolate the problem with the motor.
Ready for part 2? Watch it here:
• Honda Rancher 350 Top ...
VIDEO HIGHLIGHTS:
Compression test - 2:08
Disconnecting the battery - 3:07
Removing the plastics - 3:20
Removing the airbox - 4:12
Removing the carburetor - 4:45
Removing the fuel tank - 5:40
Removing the muffler - 6:35
Removing the valve cover - 6:55
Finding top dead center - 7:20
Disassembling the motor - 7:40
Read how to do this job step by step: www.partzilla.com/blog/honda/...
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In the video we’re working with a 2003 Honda Rancher TRX350TM, but you will have similar steps for your Honda ATV. If you’re not sure whether these steps apply to your machine, leave a comment and we’ll get back to you.
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I've done 2 rebuilds from this video massive thanks
You have helped me more than once before fixing my trx350fm. Thanks, keep it up.
You are a life sever love how thorough you explain things
I love your videos!! Hands down the most informative and most detailed instructor on youtube!!! Please do this for a 2013 rancher!!
Pro tip: before you tear it apart to see where you losing compression put a tablespoon of oil in the spark plug hole. If the compression increases your rings are worn. If it stays the same it's the valves.
Excellent video; very professional! May God bless you!
Great video
Great videos. Thank you
Mine started blowing smoke this past weekend on a out of town camping quad riding trip. It was getting so bad, oil was around on the outside of the muffle exit hole. Engine sounds ok still though. I haven’t rode it much in the last 5 years. I suspect after sitting a solid year then taking it riding putting it thru it’s paces, I’m thinking my rings are sticking. It’s a 2006 and I’m original owner since new. I don’t beat or mistreat my equipment.
I'm about to start getting my trx350tm valve seal change tomorrow can you send me a list of parts or gasket can just need
Gotta question if I buy a new cylinder head will it come with a new gears valves seals or just he head itself? On y’all’s website
What exactly do you mean by boring the cylinder 2 sizes over? Would I need to take to a machine shop?
When you bore it do you use the same piston an new factory rings
Interesting to see pushrods. Gets the job done in this application I guess.
How do you get everything to TDC if the engine is seized?
I got a 04 foreman trx450es i sunk it and started smoking done about 3 to 4 oil change still smoke i got new gaskets set kit for top end have not finish the gasket kit instill no oil on the spark pug and the piston has a little build of carbin do i need to buy new piston and rings
After getting cylinder bored. Do you have to get a certain piston and ring size
Hey I was wondering if you have to move the timing mark
instead of bagging and tagging bolts and nuts i always screw them back in the holes
My rancher stopped running after being sluggish for weeks when it stopped it sounded like a rachet a few friends say it could be a Bent valve what do you think it is?
Partzilla do I need gasket sealant.
If my rancher is tapping real bad from the top end and I've adjusted the valves and it's still still tapping would a top end rebuild be the next best move?
If you can't get them to adjust, then a rebuild should solve the problem
You said you had the cylinder bored out on this machine...can you have the cylinder bored on a 2006 Honda Recon 250? I know some cylinders are sleeved that’s why I’m asking.
It's a steel sleeve, you can bore it.
Hey what about when it's letting black smoke out of the muffler is it the position rings and clyender wall or what do you think Partzilla
Most likely rings
Yeah that's what I was thinking too if I should change the rings this year or about next year and get new parts too for the front shocks
I have a 2001 350 electric shift would it be the same procedures as the 2003? Thanks
Yes
My four wheeler runs fine but it's leaking a little oil around the top end above the spark plug. Could it be a gasket needing replaced?
Make sure everything is tightened down. Otherwise, sounds like a gasket.
How do I get the piston on a 08 Honda rancher 420 to the top?
Put it in gear and push it forward till it's at the top
Hey partszilla I recently bought a 2002 Honda forman 450 4x4 and it's making a tapping sound on the valves and it was smoking out of the carburetor in to the intake box I readjusted the vavle gap to 6 thousands and it ran healthier had better compression however it's still tapping and smoking out the carburetor into the intake I doubt it's the Piston because it's not smoking out the pipe but what do you think? I would really appreciate your advice thanks
Did you do the valves when the motor was warm?
Partzilla well that's how I bought it and I saw your video and decided to do it myself got a feeler gauge and when I looked at the valve cover it looked like it had already been adjusted before so I drove it into the garage maybe 1 minute at the most and popped open the cover yes it was a little warm then the valves had no slack to I re adjusted them to 6 thousands at top dead center and put everything back together and fired it up an it had better compression and everything sounded healthier but it was still tapping at the vavle area and smoking out of the carburetor at idle once you press the acceleration some the smoke goes away. Please advise on what you think I should do I'm looking into buying the gasket kit and 2 new valves and resurfacing the seating area like you did in this video but I would like to hear your advice before I do so thanks for getting back to me and hope to hear back from you
Ramiro Quintana interested in hearing what partzilla has here I have the same issue in 09 Kodak/grizzly 350
How do you repair an out of alignment 2004 Honda rancher left wheel is out of alignment.
Inspect joints and arms. Replace as necessary
Hello Partzilla. How can a seized cylinder be removed from the piston and rings, without metal shavings falling into the crankcase? Would that even happen during removal? Or, will the lower end need to be disassembled for inspection anyway since the engine is seized? I'd appreciate anyones advice also. Thank you.
In a seized up scenario, I would tear the motor down to parts. Then you can see what you need and rebuild the entire thing. There's a good chance you will need to do some cylinder work.
does atv/motorcycle engine break in have to be done under a load while riding, or can it be done in neutral? i've seen videos done both ways.Thanks again
REPLY
Here is the best way to break in an engine. I'm sure everyone has their "expert" opinion all over the internet, but this is tried and true.
On an ATV/Side x Side. 1st crank = idle 10 minutes check for leaks, listen carefully for abnormal noise, let cool.
1st ride = 20 minutes vary load constantly up to 50% throttle, check everything again, let cool.
2nd ride = 60 minutes vary load constantly up to 70% throttle let cool. Should be good to go at this point. Put some average miles (50) without getting too crazy. Then let it rip.
On a motorcycle, I would double the ride time and mileage.
Yea i was hoping it could be done by varying the throttle in neutral. It would make it a lot easier. But i guess there needs to be a load. Thanks
I got away with replacing piston rings on my 2stroke yammy...
Hey Partzilla I have a 250 recon and it was sitting up for about a year because of the carb and I just replaced it and the spark plug I checked the spark plug a couple days later and it's like a charcoal black color do you know what is happening in tje motor ALSO the bottom end sounds like a chain is rattling would that be the timing chain? LIKE I SAID IT STILL RUNS
Too rich? Oil saturation? Could be cam chain tensioner.
Is that hard to change
@@aaronpepper9838 Not sure if it changed in later years, but it should just be a couple bolts and remove the tensioner.
Ok thanks. One more question I heard It could be a burnt valve if it is could a do the paper trick? Where you put the paper to the exhaust
By checking for suction? You can do a compression check. The paper test is not foolproof.
Does this engine has hydraulic or solid valve lifters?
No hydraulics.
Well i screwed up.