1987 Honda Fourtrax 4x4 TRX350

[@BSQ802]

I just bought the same machine. Ran fine for a couple weeks, but now having no spark. About to diagnose cdi as coil is fine. Downloaded repair manual, which was 300 pages, should’ve printed back and front.

[@investinurself3445]

That's a lot of printing. I bought a thumb drive and downloaded all my manuals to that. I think I have 5 manuals to vehicles on it but I haven't bought the atv manual yet. Need to get that. Thanks for the comment.

[@wilfor03]

Got a question for ya (or anyone) about the new carb? Where does the electrical cable from the carb plug into and what's is for if ya know......I've just gotten a 86 Honda Fourtrax 350D and trying to figure it all out.....and thanks for any help.....Bill

[@pogmohon8857]

That’s not the cdi it’s a fuel cut relay, the cdi goes under the front plastic

[@investinurself3445]

Thanks for the correction.

[@thegreenman2030]

There are several Honda ATV message forums, they have a section where you can find the mechanics manual for just about every machine they have made for the last 40 years. It walks you through a step by step process of troubleshooting and diagnosing just about every issue there is so you don’t have to spend a ton of money parts swapping until you find the issue. They are the same manuals dealership mechanics use.

[@investinurself3445]

Thanks for the info, I'll give some a look.

[@DonSteele-ns7jj]

Fuel pump relay, not cdi box

[@investinurself3445]

Correct thanks for pointing that out.

[@mitchmyster]

Might be a ridiculous question, but where is the fuel cap on these?

[@investinurself3445]

It's under the seat. Hope that helps, thanks for the comment

[@lonniemuth5207]

Hey does cdi cause machine to loose power and shut down? I have same exact machine?

[@investinurself3445]

A google search came up with this A bad CDI (Capacitor Discharge Ignition) box in a motorcycle can lead to various symptoms, primarily affecting the engine's performance. Here are some common signs of a failing CDI box: Starting Issues: - Difficulty starting the engine or complete failure to start. - Engine may turn over but not fire. Irregular Engine Behavior: - Misfiring or backfiring during operation. - Engine stalling unexpectedly. Poor Acceleration: - Loss of power or sluggish acceleration. - Inconsistent throttle response. Electrical Problems: - Flickering lights or electrical components not functioning properly. - Intermittent issues with the ignition system. Overheating: - The engine may overheat due to improper ignition timing. Check Engine Light: - Activation of the check engine light or other warning indicators on the dashboard. Hopefully this answers your question.

[@gsxr1000jt]

Do you have the trx 350D version? I wondered if you notice when your cooling fan comes on and for how long.

[@investinurself3445]

I do have the 350D version. I have been trying to see but it hasn't came on at all. So I need to find the wires and put a switch on it or figure out why it never works.

[@jarvislarson6864]

Only 86 trx350 had orange lens lights 87 up were clear lens

[@investinurself3445]

I'm just going off the name/model plate. Thanks for the comment.

[@markallen8571]

​@@investinurself3445I have a completely original 1990 350... orange lenses. Previously had a 1989... orange lenses.

[@JayPalmquist]

Hey man! How did I get that battery off?? It won’t seem to come even after those two screws

[@investinurself3445]

It should just slide right on out. Sorry about the late response and hopefully you got it out. Mine I just pulled up and it came out. Thanks for the comment.

[@JoeteP-jr6fg]

I just got one put new coil and battery in it but get no spark plug is new and I tested the ohms from cdi box connectors and everything checks out and I followed the manual guidelines and now I'm stumped I want to junk it it's so aggravating but I need help please the grounds are all good and clean so help me please

[@investinurself3445]

Just asking but is the kill switch on? If so switch it and see if that works.

[@capone818figueroa4]

Change the stator and pulse generator

[@JoeteP-jr6fg]

The switch is good I wired it bypassing it

[@JoeteP-jr6fg]

​@@capone818figueroa4 I checked the stator and pulse generator with the volt meter and the ohms are good

[@JoeteP-jr6fg]

I also can kick start it with my hand

[@Willdeacon1981]

The 350d

[@investinurself3445]

Yes

[@natm3145]

Fuel pump cutoff

[@investinurself3445]

Yes you are correct. Thanks