shadetree

starter solenoid is bad, purchase a oem part from rocky mountain atv, or a used oem one from power sports nation.

it's posb ?, they do not last forever..lol. you will need to remove the front diff, split it, mic the disk , see if they are out of spec's ?.

most front diff's on honda's have a clutch pack inside the front diff, this is how it gets to be a limited slip diff.

when it comes to anything electrical on my honda ?..its oem all the way !. i buy all of my parts from rocky mountain atv, they have great prices, and ship fast.

where are you buying these switches from ?, if you are getting them from ebay ?, this tells me all i need to know.

your model is full time 4x4. at most, it has a limited slip diff on the front diff.

if you are calling the CKP the same as the pick up coil ?, i just looked your model/year/make up, i see honda in their wisdom decided to make the stator and pick up coil all one part ?!. and its not cheap...right at 500 bucks. you can find this info under the fich parts under generator, it is the stator that has the pick up coil.

keep in mind, the trx400fm has the same rear diff as the trx450fm. check with power sports nation for a used rear diff before you buy a china rear diff !.

are you sure you unplugged the gear switch ?.

sounds like the gear position switch is bad ?.

@AKATV

i would start with a clutch adjustment.

it's china junk, don't bother !. honda hates china parts.

i normally just buy the ring gear and pinion gear if its still being sold from honda.

as akatv ^^^ posted, yeah..those spacers on the ring gear are very easy to miss/over look !. most times in my work, they either stick to the ring gear ?, or stick to the bearings ?..most on ring gears. as for which ones you will need ?, well..this is an open and close case !. all depends on how much wear you have on the pinion gear and ring gear teeth ?. i normally just re-use the spacer washers that are on the differentials as i put them back together. if i have to buy new spacers ?, i just buy stock size, but i always have these spacers when i tear them down. '' if '' i tear one down, and someone '' miss-placed '' them ?..lol. i will round up some spares i keep on hand, do a dry fit. by this, i put the spacers on the ring gear, put it together, spin the pinion gear by hand, rocking it back and forth, i can feel/tell how much space i have before the two teeth hit each other ?, if i feel too much slack before the teeth '' hit '' ?, then i need to locate a thinner spacer washer...this is how i do it. yes.the book says to use a spec tool to '' dial '' in the back lash ( same thing as teeth space ) ?, but i go by feel.

i have not seen mac around for some time.

ok..i looked at the micro fish...going by it, you have the shift forks installed right.

top pic, i'm looking at the shift fork, and the gears the way they are lining up, something is off, its like the shift fork in installed upside down ?, the reason i say this is, because the gear teeth are not lining up, nor are they sitting even across the gears ?. makes me think the top shift fork is installed upside down ?.

if you are in the states ?, send me a pm with yer cell #, i'd like to ask and go over a few things with this tear down. DO NOT POST CELL NUMBER OUT IN OPEN !.

a couple tips : MAKE SURE YOUR SHIFT FORKS ARE FACING THE CORRECT WAY WHEN INSTALLED ?. each shift fork has a letter stamped on it, bottom to top: RR, C, FF. meaning, the bottom shift fork will be the rear, c is for center, f is for front/.forward. each shift fork MUST have these letters facing up as you place them in the shift drum !. second tip: when placing shift drum into bottom case, its a good idea to have each grooves end line up from top to bottom, this is the stop end for each shift fork. it does not matter where you have the shift drum sitting once you place the shift forks in the case, and go to install the shift forks ?, but it does make it alot easier to line the shift forks up while placing the forks into the gears slots/grooves when doing so.

ahh..yeah...not sure about the bolt pattern on the axle tube to brake backing plate ?. i '' think '' they are the same ?, let us know !.

keep us updated !.

the bolt pattern is the same as most all of honda's today. think about this for a min: i used 2003 honda foreman 12 inch rims on a 1989 trx350D front end so i could use the high lifter brake kit, sooooooo...bottom line...the bolt pattern is the same from 1989 to 2003.

have a look at the choke enrichment valve, and choke cable. the enrichment valve may be stuck in the carb, and not re-seating back down like it should.

you could have went to D&B electrical and got a great starter for 1/3 the cost..but oh well..your money..lol.