1997 fourtraxx 350 motor replacement
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lol, I know my trx300's and trx350's ( old school )..and new trx350's..lol.Yep, Shady is right, you’ve either got a 97 300 fourtrax or an 87 350 Foreman.
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if you DO have a early trx350 ?, all years from 1986 to 1989 motors are mostly the same, only a couple things changed through the years . same goes for the trx300's, all trx300's from 1988 to 2000 are the same, with the only difference is the 1988 has a larger cam.
. same goes for the trx300's, all trx300's from 1988 to 2000 are the same, with the only difference is the 1988 has a larger cam.
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as mac said ^^^^, any 4wd trx300 motor will drop right in. you can also use a 2wd motor...BUT !!!!!!!!!, you will have to split the motor, and change out the left side cases, and output gears and stuff, not an easy task if you never have done it !.
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I’m still learning, knowledge comes with age... Must be a good advantage of yours lmaolol, I know my trx300's and trx350's ( old school )..and new trx350's..lol.Yep, Shady is right, you’ve either got a 97 300 fourtrax or an 87 350 Foreman.
Post a picture, we like pictures!
I’m getting pretty good with the 300’s though.. (I think)!
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Remember this...
If you get a Gen1 engine complete with a carb,88-92. The carb is different, choke plunger is shorter and wider, there’s something else different with it to that I can’t remember. It will run and work fine though as would your carb if you were to mate it to a Gen1 engine.
A worthy mention IMO for future spares searches.
If you get a Gen1 engine complete with a carb,88-92. The carb is different, choke plunger is shorter and wider, there’s something else different with it to that I can’t remember. It will run and work fine though as would your carb if you were to mate it to a Gen1 engine.
A worthy mention IMO for future spares searches.
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38,589 Posts
just knowing is half the battle !..age is a bonus..lmfaoooo.I’m still learning, knowledge comes with age... Must be a good advantage of yours lmaolol, I know my trx300's and trx350's ( old school )..and new trx350's..lol.Yep, Shady is right, you’ve either got a 97 300 fourtrax or an 87 350 Foreman.
Post a picture, we like pictures!
I’m getting pretty good with the 300’s though.. (I think)!
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12,712 Posts
You snuck this 300 thread in on me , when I seen 350 as a title and I passed it by ----- I have a 1996 frame with a 1990 engine in it , the wiring harness and electrical parts are from the 1990 , you also need to use the headlight switch assembly from the 1990 as the choke connection has a different length mount and the wiring of the connectors inside the kill switch is different , like Sam mentioned , the choke cable and plunger are different between the different gens at the carb ----using a 1st gen engine will give you a little more ump as the cam is hotter and the CDI limits at 7K+ were the 2nd gen is 6K ,my first choice would be a 1st gen engine , but finding a good running one could be hard or expensive , if a 1st gen engine wasn't available you can make a 2nd gen engine perform the same way with a 250es or 250a cam and a Rick's no limit cdi , if that is what you are looking for
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You don't have to change any harnesses or anything, a bare engine, so no carb on it, just the engine itself...is the "same" from 1988 right to 2000. There were some minor changes but they are not important to fitment or functionality of the engine. The only electrical connections on the engine are the two for the stator, one for the starter, ground, and your gear position and oil temp sensors. These are all the same on all of the 300's they never changed.
Yes there is carb differences but your engine blew up not your carb so you have no reason to use a different one, the major thing with the 88-92 carbs is that they will be jetted slightly different than the 93-00 carbs for the differences in the cam/cdi/exhaust. Having run 93-00 engines with just the 88-92 cam in them I never found a need to change the jets, just adjust the idle mixture a tad and run it. OR you can just swap the cam over from your old motor if the top end isn't bad, IF you really wanted to, I wouldn't bother with it.
BTW even with a broken crank they are always fixable, if it didn't bust the cases it's not even a bad job, 300 cranks are easy to come by.
Yes there is carb differences but your engine blew up not your carb so you have no reason to use a different one, the major thing with the 88-92 carbs is that they will be jetted slightly different than the 93-00 carbs for the differences in the cam/cdi/exhaust. Having run 93-00 engines with just the 88-92 cam in them I never found a need to change the jets, just adjust the idle mixture a tad and run it. OR you can just swap the cam over from your old motor if the top end isn't bad, IF you really wanted to, I wouldn't bother with it.
BTW even with a broken crank they are always fixable, if it didn't bust the cases it's not even a bad job, 300 cranks are easy to come by.
wow great info guys thats a lot this really helps me out
the machine is just for a farm where it won't be used hard so to say just to go turn on and off water valves and pruning and to go from one side of the property
so my next question is i have a friend with a 98 fourtrax 300.... its beat up cosmetically but runs great......
other then the fact that it will just die sometimes at idle 30 seconds after being started up randomly.....
to me it sounded like a low oil shut off but the oil is full and it dose not burn oil and if u leave it for a few days or so it will run fine...
i am in the middle of a rock and hard place of what yo do as if the motor from his 98 will fit in i will just swap the motors and keep the electrical on the machine and it should just plug in to the other one
just got to find out why his 98 ramdonly dies??
he seems to say theres some electrical box in the front if his 98 that may be the problem of it dieing out ?
thanks again guys this was a great help so far
the machine is just for a farm where it won't be used hard so to say just to go turn on and off water valves and pruning and to go from one side of the property
so my next question is i have a friend with a 98 fourtrax 300.... its beat up cosmetically but runs great......
other then the fact that it will just die sometimes at idle 30 seconds after being started up randomly.....
to me it sounded like a low oil shut off but the oil is full and it dose not burn oil and if u leave it for a few days or so it will run fine...
i am in the middle of a rock and hard place of what yo do as if the motor from his 98 will fit in i will just swap the motors and keep the electrical on the machine and it should just plug in to the other one
just got to find out why his 98 ramdonly dies??
he seems to say theres some electrical box in the front if his 98 that may be the problem of it dieing out ?
thanks again guys this was a great help so far
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98 motor will swap fine, the issue is most likely either carb related or CDI related, you can just use your carb and CDI that's already in your machine though and the motor should not have any problems. The CDI is the "little box in the front".
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Best bet is to look on Kijiji for a parts bike or motor, or throw a wanted ad up, try and find something local. These machines are very common so it shouldn’t be hard to find something. Shipping a motor would be very expensive, especially across the border. Can’t help much on rebuild places as I’m on the other side of the country.
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