Demon8024

Update: got the parts in put the new clutch adj screw in and put bike back together. I bought the bypass harness as mentioned above. buke run and shifts great thanks everyone for your help.

Ive done that it shifts fine

I was talking to one of my buddies about doing something similar to this. After looking at the bike and working on it, I was like I could just route the power straight to the motor.

Testing the shift motor - the shift motor does not receive a signal from the Shift Control Unit. I unplugged the shift motor and tested with multimeter at the harness(motor plug) was not sending power through to the motor. I have also attached a 2nd battery (known good and charged) to the motor it will shift the bike up with the polarity one way, and when the polarity is reversed it will shift the bike down. The motor is good and working as it should. since I have taken the clutch cover off I will be doing the gasket correctly. I have inspected the shift motor gears already and they are in great shape. I do indeed agree with you about the clutch adjustment having nothing to do with the ES system. But with the manual saying to make sure it's adjusted correctly as first step before doing any other checks, it wont hurt me to go ahead and make that work properly. The ground you are talking about? would that be the motor ground or the frame ground? The motor ground is working fine since the bike fires right up (starter ground), but I have not inspected it. The frame ground is the same in that during the tests if I had no ground I would not get any voltage readings, but lass I have not inspected that as well. tomorrow I will be checking both grounds to double check thanks.

Surprisingly no.

UPDATE Yes, so unfortunately I was impatient and was like I have the means I guess ill just pull the cover and check it out. it was very badly seized in the case. I ended up using a tool that when hit with a hammer it help spin out stuck bolts. it worked (for the most part) got the part off and messed up the external threads on the way out. so now I'm going to order a new adjustment screw and gasket for the clutch case. Of course after I got the case off, it looks like someone else was in there and put a new gasket on the old gasket instead of cleaning the old off. So... I have a bit of work to do and ill keep you posted. Thanks for all the help so far.

Thanks! The nut i was able to get it off. The adj screw is whats stuck. I have hit it will pb blast and try to turn it. And tried shifting with tension on the screw and its still stuck i will deff be useing more pb and go from there.

Bought a 99 Foreman TRX450ES and was told that it needed top end (smoking bad) and the front diff (final drive) was broken. I got there and he said the ES wasn't working and he thought it was. Bike would start with a jump and smoked very badly surprised it even ran. Ended up buying the bike a little cheaper and getting it home. Once home I inspected it and then let it sit for a few weeks. First the battery was weak and having starting issues, added a new battery. Then on to the carb where it was clogged and dirty, cleaned and rebuilt carb with kit. Got it to fire finally and low and behold it still smoked a lot... Was told that he had it taken to a shop for new rings and piston (the shop told him the damage was pretty bad and it would only have a 40-50% chance not to smoke.) It smokes. filled shop in less than 30 sec. so rebuilt top end and found many loose bolts, exhaust was hanging on with a thread, and I'm shocked it wasn't blowing oil out of the head gaskets and base gaskets. once rebuilt put it back together it ran nice and smooth. Now to get it to move. Front diff was cracked and broken at the input shaft, bearing was non existent. Replaced with used junkyard diff, bought new CV axles both sides and front brakes. Finally ready to move it AND… ES doesn't work. I used manual foot shifting and rode it around the yard for about 20-30 mins. Went through all 5 gears and reverse, the screen had bad sun damage but I could see enough that everything seemed to work. When I press the button for up and down shifting on the ES controls nothing happens no noise no lights and no shifting. I have a Service manual I downloaded from the internet labeled as TRX450SFM.PDF. I followed the manual to the T and found nothing wrong with the ES system at the end of the trouble shooting steps it says if nothing wrong replace Shift control unit. Replaced with a used one ( being cheep) and still having the same problem. Now a side note is at the very beginning it says to make sure the Clutch is adjusted properly and on my bike the adjustment screw is seized in the case.. so I have yet to do that fearing stripping and case cracks etc. so that's what I'm left with and that's what I will be trying to do today. batt good and charges reads 12.2v this whole time check gears - Shifts fine no problems on all gears check relay - good check relay power (10v min) - 11.7v check relay continuity - Good check relay and control unit 5pin continuity - Good check 16pin control unit power (11v min) - 12v install jumper in CU and check power (11v min) - 12v check 5 pin CU for continuity - Good check 16 pin ohms (4-6 ohms) - 5ohms check 5 pin CU ohms (4.75-5.25) - 5 ohms visually inspect angle sensor - good check smooth ohms op on angle sensor - good check power on 3pin shift switch (4.75-5.25 volts) - 5volts inspect shift switch - good check shift switches for continuity - good check for continuity between 16pin CU and shift switch - good inspect gear position switch - Reverse and neutral have good continuity but 1st and 5th were reading with ohms and no continuity. plugged in and the HUD was reading all gear R, N ,1st,--,--,--,5th check continuity between gear position and 16 pin - good check shift motor with known good batt - Shifts both up and down and smooth replace Shift control unit - Replaced (with used from Ebay, assumed working but unsure will probably return) I have the 38910-HN0-A11 control unit

Hello, i have a 99 honda foreman trx450es with a display that is sun worn and faded i can see something on the screen but have make out what it is. i would like you to clean it or do what ever it is you do to make it wonderful again. please and thanks!