aggiec05 4 Posted November 8, 2022 (edited) I recently inherited my grandfathers 1986 Fourtrax 350 looking to give it some more life and let me kids enjoy riding it as much as I did. The good: Engine is still strong, starts quickly and shifts relatively well. The bad: Pivot Bearings and pivot bolts on front missing (where can i even find these?) Cracked plastic everywhere (I can get by with this as kids are likely to be rough on it) seat foam is basically gone (I have a new cover, need to find some foam replacement) Carb could use a good cleaning Can anyone help me find where to buy pivot bearings and a pivot bolt? Assuming that's what I am missing here: my 86 fourtrax350 Edited November 14, 2022 by aggiec05 2 Share this post Link to post Share on other sites
jeepwm69 7,601 Posted November 9, 2022 Get the part numbers here for the swingarm bolts, and do a search on ebay. First make sure the threads on the frame aren't stripped. https://www.partzilla.com/catalog/honda/atv/1986/trx350-a-fourtrax-4x4/front-swingarm Cracked plastic drill a tiny hole at the end of the crack to keep it from further spreading. Seat foam, I'd try to find some closed cell foam at a fabric store (think couch cushions etc) and shape it with an electric knife. Welcome to the board! Share this post Link to post Share on other sites
Goober 1,555 Posted November 9, 2022 (edited) congratulations and welcome to the forums Download the service manual from the folder labeled service manuals. See my pic. do all the service items. Only use wet clutch engine oil not automotive oil. These quads don’t have a separate transmission case. you can still buy printed genuine Honda service manuals on eBay for your quad. They run $10 to $200, so keep your eye out!! only buy oem parts. Use the oem parts finder at Rocky Mountain atv and Partzilla https://www.rockymountainatvmc.com/oem-parts?PID=6162047&ref=cj&cjevent=739b5cf1059a11e983e401da0a240614 Edited November 9, 2022 by Goober Share this post Link to post Share on other sites
toodeep 1,758 Posted November 9, 2022 When I had to redo my seat I believe I used the seat foam from 1st gen 350 rancher seat I had laying around. I'll have to look and see if I have any pictures. One of the aftermarket companies might offer a foam that is close enough without forming one to fit. Share this post Link to post Share on other sites
_Wilson_™ 6,564 Posted November 10, 2022 Congrats....and Welcome to ATVH . Share this post Link to post Share on other sites
shadetree 5,882 Posted November 10, 2022 welcome to our forums. if you can't find the parts you need new ?, let me know, i'm sure i can locate them for you. 1 Share this post Link to post Share on other sites
Fishfiles 20,145 Posted November 10, 2022 Welcome to ATVHonda >>>> many moons ago , I was in the need for a 300 seat foam and never had one , I bought a memory foam from the fabric store , now it was very expensive , I paid about $40 for the piece , I was lucky enough to have a foam saw , you can do it with a electric knife --- it is a very comfortable seat Share this post Link to post Share on other sites
aggiec05 4 Posted November 14, 2022 On 11/9/2022 at 11:56 AM, jeepwm69 said: Get the part numbers here for the swingarm bolts, and do a search on ebay. First make sure the threads on the frame aren't stripped. https://www.partzilla.com/catalog/honda/atv/1986/trx350-a-fourtrax-4x4/front-swingarm Cracked plastic drill a tiny hole at the end of the crack to keep it from further spreading. Seat foam, I'd try to find some closed cell foam at a fabric store (think couch cushions etc) and shape it with an electric knife. Welcome to the board! How do I know which bearing taper roller I need (part 22) if mine are missing? Thanks for the warm welcome everyone! 2 Share this post Link to post Share on other sites
jeepwm69 7,601 Posted November 14, 2022 Either one should work. I doubt there is any difference at all. Honda will sometimes change part numbers based on a new contract from a supplier. Same part, different part number. 1 Share this post Link to post Share on other sites
Goober 1,555 Posted January 30, 2023 @aggiec05Picture of 86-89 TRX350 Keihin QA03A carb: 4 orings and a starter jet passage plug. i like Shindy and K&L kits but they don’t come with the plug; you have to buy an OEM gasket kit or a set of Gold Wing passage plugs. 1 Share this post Link to post Share on other sites
