Arizona

yea, looking for mostly wiring and control diagrams which are specific to terra pro. Found a download on 

Docpro but cant seem to download it. Az

checked and not listed there

Looking for a repair manual for a 1988 Yamaha Terra Pro

Thanks Az

Been a while since i posted as other stuff has taken priority. 

Picked up a 88 Terra Pro the other day, man this thing is rough. Missing gas tank,

carb, all cables locked up or broken, But the bike looks interesting, never seen one. 

All i see listed is 350cc but this one is a 250? Has 5 speed live clutch, PTO, looks kinda cool. 

Who knows when it ran last. Got it from a guy said he got it from a friend years ago like that

so probably hasnt run in 15 yrs or so. Started working on it, the oil was full of gas, drained it 

put fresh oil in it. Pulled the plug which was fouled black, im sure it was flooding. Cleaned the plug

and actually got it to crank with the start button. Got cables, carb, and a gas tank on the way. Hoping

for the best. Az

you could try just raising the idle. If that doesnt remedy it you probably gonna have to 

open up the carb and at least clean it out and clean out the idle circuit. Not that difficult, 

lot of tube videos there to watch. Az

This ever get figured out?

well some one wanted to but it so away it went, still no front brakes, 

guess ill never know but sure ill get another with the same problem. Till then , Az

I bled the m/c first, gravity fed both lines forever, Pumped up and bled 

the standard way, barely any tension on lever, it does come shooting out of the bleeder

when bleeding but still not enough to activate brakes. I even clamped off 1 line at a time. 

When doing so it increased the tension on lever a lot but still not right. I even was tapping on the brake line where

it connects to the wheel cyls, and also at the y connector, still same condition. Easiest things seem to mess with

you the most. Like i said before also had another one with a broken m/c and ended up same problem. Never did get

enough pressure to slow you down. Would not even keep you from rolling it with the brake on. Dam Hondas! Az

Had a 300, had new timing chain plus other new parts and still made a racket from that motor, ran great. Ended up selling

never figured it out. 

So as i read all the new posts i think and probably some of you also like I remember that problem or that headache

on that bike, I have been through many and some simple and some pretty complicated but eventually figure them 

out with some experimenting and help from others here. Kinda wonder why i still buy them.  Each one is harder than 

the last but pretty satisfying when finally figured out. Think ill keep doing it, keeps the brain working. Az

So i have had this trx 250 that i brought back from the grave. Long story

but got it running and the master cyl eye glass was broken out so it hasnt worked in years. 

I replaced it, filled and bled the cyl, bled the brakes, I dont see any air coming out when im bleeding them

but no matter what no pressure on handle. Will stop the turning wheel if spun by hand but wont hold at all. 

I adjusted the brakes also, checked for leaks at the brake cyls, all good. No leaks at lines or fittings, I have put a lot of fluid

throught them and i know the routine as i did brakes on autos for years. Have new washers on master cyl, I would hate to replace 

parts knowing their good. Funny thing, few years ago same style vehicle i bought same broken master cyl and same problem after

replaced. No pressure, Any ideas? Pretty simple system but maybe you guys have had similar problems. Thanks Az

Just so you know I have replaced the complete master cyl, not just the glass. Az

Update on the Honda, Replaced the stator and pickup as it comes with both.

Rechecked and has spark now, Also carb throttle plate rusted in fixed position,

tried it all and no fixing this carb. I ordered one and after playing with the metering rod

adjustment actually runs great. Was a lot more to it but you get the point. Sorry long wait but

have had other projects keeping me busy. 

I would still adjust the valves, everyone i have had has been out of adjustment

Hope it works out for you. Az

Yes it did, very easy to replace. also came with other seals i used on other atvs

normally it clears the frame but in this case the weld on the frame was built 

up enough to keep the cover from coming off. I would try to remove it and 

see if it is gonna hit. If doing extensive work i would just unbolt the motor

to move it out of the way. Most the times it will come right off. 

lol, no repairing this one. stator smashed into wires, tried using a chisel to separate, not 

working, Also, cover would hit frame and could not remove with out pulling motor or at 

least unbolting and jacking up. Decided to break out the die grinder and take off part of frame

by foot pedal to save a lot of work. Parts should arrive later this week. Az

Well removed the stator from the housing and then could see the damage. Must have had foreign

material get in and smashed between stator and flywheel. Has a good dent in flywheel but i think  

should be ok. Ordered new stator, will replace when it gets here and go from there. Wonder if thats

what locked the motor up and not a stuck ring, Shall see. Learning all the time. Az

So got around to doing some checks, all stator legs seem to be grounded, not good. 

The pick up also grounded on both wires, Not sure how all are grounded but pulled off

the cover with the stator, looks ok but havent pulled it off the housing yet. Never seen one

that every wire was grounded to the body. Guess ill order new stator and go from there. Az

LOL, I have baked the cdi @ 300 for 10 min. Havent tested it since. 

Been kinda busy. I still have to check the kill switch, and voltages to see

where im at. Happy i found the other download for the wiring.  Work and 

the cold keeping me from working on it. Will report what i find. Thanks Az

The other box appears to be a warning box, maybe a driver for the oil over heat etc. 

At least that what the wiring diagram shows, I scrubbed the tube where the vin should be

but dont see anything. On my old one all i ever saw was the sticker which had the info on it but

no vin. Ill have to check again when it warms up here. Az

Ok, update. I downloaded the 85-87 Trx 250 manuel. It showes both cdi boxes but only lists 

1 as the cdi box. Not sure what the other one is. At least i have a map. Still would like to know the year

of it. Gonna have to do some back probing on the wiring when i get some time. Didnt see this download

last time i was on here. Az

Well got another one for the elders here. I recently picked up a Honda Trx 250

in pretty rough shape. Brought it home cleaned it up if thats possible. Motor was

seized, Pretty bad shape. I unseized the motor, got it to spin over, Got it to crank on its

own with the start button. Got neutral light, but no spark. Fuses good wiring is old but looks

intact. Went to check cdi box, here is where the problem lies, I dont know the year. The last one 

was under the plastic on the crossmember, this one has none. Looks like a  sticker was there at one time. 

I checked the left side of frame by foot peg and nothing. Cant find any vin number. I need to know the year

to try to locate a cdi. One clue is this one appears to have 2 cdi boxes. One is a little larger than the other but

plugs look identical to eachother. One has green connectors and the other has white connectors. Is this only

on certain year model that has duel cdi boxes? I also need a download for a trx 250 Im thinking its about a 1985 or 86

but just a guess. Before changing i would like to check some voltages but need a manual for this. Any guess on how to 

identify and or get a download for this one would be great. Wont let me post pics only .08 MB Down load available. Thanks in advance Az

Not a 2 Stroke but sure is fun, Would post more pics but looks like 2 pics i posted used up 

all my allowance. Seems can only upload couple of pics now says all files are too large.

Theres a lot of 3 wheelers out there. The nicer ones the people think they are gold and 

sell for more than when they are new. The cheap ones are pretty much destroyed and or missing

ungettable parts so keep an eye out and you will find one. Az

Checked their website, dont have it. Thanks for the reply though. Az