OpenTube

Honda ATV Top End Rebuild Tutorial- It’s Easier Than You Think!

The Doubtful Technician

78,459 views

How to rebuild the top end of a Honda ATV. This video features a 1986 Honda Fourtrax TRX350, but most four stroke ATVs are similar.

Parts used:

-Honda valve guide tool (07742-0010100)
-Tusk gasket kit (1032020077)
-Valve guide (12233-HA5-305)
-Bronco exhaust valve (AU-09008E)
-Piston rings (13011-HA5-305)

Tools used:
-Metric sockets and wrenches
-Rubber Mallet
-Overhead valve spring compressor
-Drill (Milwaukee M18)
-5.5mm reamer (Uxcell B07QQPJB1V)
-Prussian blue (Permatex)
-Valve grinding compound (Permatex)
-Engine Assembly grease (Permatex ULTRA SLICK)
-Feeler gauge
-Cylinder hone (FLEX-HONE 83mm)
-Torque wrench

20 Comments

@badassbees3680 4 days ago

Best video ever. Thank you man you clearly told sizes and showed location and tricks..this people is how you help others ..fixing to put head gasket on had enough of leaking smoke

@pilgrim776 3 years ago

Yo this guy’s got jokes! But seriously, this is a great instructional video and it’s worth it for the humor. Thanks.

@CoreyWilson 3 years ago

I love the effort your put into doing this right… except when it comes to one of your valves 😂

@DrakeKBG 2 years ago

God, I love this channel. The perfect combo of education, jokes and jank . Love it!

@Doublejj55 2 years ago

One of the best videos on this particular wuad

@wheyez1 7 months ago

Thank you, I have one that the valve rusted open setting for years. Now I’m sure I don’t want to get into it. It is not mine, and friendship can only go so far.

@gaberoetman504 2 years ago

This is a great video. His one step forward and 2 step back process is identical to mine. Awesome instructional video with the struggles.

@Ibuildsht 3 years ago

Crazy he got good tips for things , the vavle grinding but , still doing the 9hr shift at vavle sitting school with his socket thing 😂

@stevemcqueen9039 1 year ago

Brilliant video, many thanks

@courier11sec 2 years ago

I knew you made this a long while ago, but for the benefit of your viewers a dab of grease on the keepers will do a lot to prevent them escaping to the cold embrace of the ever expanding void under the workbench.
Been really enjoying binging your channel since I found it the other day. Great stuff.

@MichaelHarvey-e4c 2 years ago

This video helped a lot thank you

@HammerdownMotorsportsUSA 2 years ago

awesome vid I bought a 90 Honda trx for my kids for cheap it has 100 psi compression so probably needs rings or close anyway also found most of the suspension needs work and the brakes but just picking away at it hoping it makes for a good quad once its all done

@michaelgray7125 9 months ago

OMG put the piston on the rod don't worry about holding the chain up slide cylinder on you are doing it the hard way

@markjordan3312 1 year ago

Thank you so much for sharing!! This isn't my exact atv, but it gives me lots of knowledge to be able to attack mine as well. I was a little hesitant, (to say the least) before watching this video!