I picked up an old trail boss 350 motors bad. But I got it for free. I was curious to see if anyone has or knows someone who’s put a street bike engine in a quad? If so what motor do you think would be the best fit and easiest for this. Or any how to guides on this. Again this is a project I want to do just looking for a little guidance. And I can do all the work and mods. I’m sure the frame would need modded but what motor etc.. thanks in advance

I picked up an old trail boss 350 motors bad. But I got it for free. I was curious to see if anyone has or knows someone who’s put a street bike engine in a quad? If so what motor do you think would be the best fit and easiest for this. Or any how to guides on this. Again this is a project I want to do just looking for a little guidance. And I can do all the work and mods. I’m sure the frame would need modded but what motor etc.. thanks in advance

Hello all, I’m new to form. I have a question regarding the clutch side crank seal for a 92 trail boss 250. The other day my sons trail boss locked up, turns out the inner clutch cover rubber sealing ring came off and wrapped around clutch locking up the motor. I popped clutch off and removed old sealing ring and engine turns over freely again. I’m currently trying to locate a new one as its not available through Polaris. While I was in there, I noticed the crank seal seems to be installed backwards? When looking at the seal, I can see the spring that adds tension to the sealing lip of seal. On all other crank seals I’ve ever done, the side of seal with the spring always went in towards the bearings. Does Polaris want the seal installed backwards, or has someone previously installed seal backwards? I downloaded a service manual, but had no luck finding info. We just bought the Quad a few months ago from the original owner that was a older gentleman who always keep the machine inside and barely rode it. For a 1992, I was amazed at the condition of machine. When we purchased it, you could have latterly sat the quad in the showroom of a dealer and thought it was a dealer demo. The original owner doesn’t remember having any service work done on the crank seal, but did say he had a problem with the same inner clutch cover sealing ring coming off and wrapping around clutch years ago. It turns out the newer models have a retaining ring/plate that holds sealing ring in place. Unfortunately the 92 doesn’t have the bolt holes in case to just add the newer retaining ring, so I guess I will have to fab something up there. Any help with crank seal direction is greatly appreciated.
Thank you……..

need some help with a trail boss 250 4×4. my friend lost his key and unplugged the ignition to bypass it so he could ride home. He did not write down where he had unplugged it from or take pictures. I bought a new ignition on ebay for him as he is older and not very mechanical or computer literate. I do not know where it plugs in as there are many empty spots for tne spade connectors to go. Does anyone have a picture or a diagram of where the four wires plug in to the bus on the left side under the gas tank cover? thanks in advance.

need some help with a trail boss 250 4×4. my friend lost his key and unplugged the ignition to bypass it so he could ride home. He did not write down where he had unplugged it from or take pictures. I bought a new ignition on ebay for him as he is older and not very mechanical or computer literate. I do not know where it plugs in as there are many empty spots for tne spade connectors to go. Does anyone have a picture or a diagram of where the four wires plug in to the bus on the left side under the gas tank cover? thanks in advance.

New to Forum! Have 1992 Polaris 250 Trail Boss, Model: W927527.
New to do top end, compression only 78psi. Wanted to remove body parts, ie. front fenders, but the oil tank has to come off before the fenders. Seems the oil tank is riveted to the frame. Is there a trick to removing the front fenders without drilled out the rivets? If not, whey would a manufacturer use rivets on parts requiring removal of the part or associated parts?

Newbie here. First time so be gentle.
Oil cooler fan and light is on all the time. Checked thermistor and it has unusually high readings>264k ohms at 70 degrees. Service manual states over 50K shows open. Trying to find replacement 4010934 and Polaris has discontinued it. They recommend a modification of new thermistor-4012510, new oil cooler and fan shroud. Over $500 bucks! My question is has anyone come up with something else and would the superceded thermistor fit the old oil cooler?
Thanks

Basically do they exist and where can I find them? Dont mean to beat a dead horse if I am

Hello all, I am new to the forums!

I just bought my trail boss a few weeks ago. I noticed the left side wheel has quite a bit of camber, it almost seems like more the the right side. But are these wheels suppose to have this much lean out on the top of the tire? Or is there something bent?…

Thanks!

Hi Ya’ll
well here’s my prob my son decided to change out the light / start/kill switch on handlebar and now the front lights are not working right and the starts just fine but half throttle boggs out the only thing he touched was the switch board, god knows i love him but i so wanna put my boot in his tail i really need a snap shoot pic of how and and where the wiring goes to the switch board ,HELP PLEASE !!!

thank ya’ll
so much for the help