[Downunder]

I’ve been offered a Trx 500 2008 it is a selectable 2WD-4WD manual gear shift.
But it doesn’t engage into 4WD.
Is there a common fault with that model?
Is it an easy fix or walk away and not bother with the purchase?
Not interested in having to rebuild a gearbox etc

 

[retro]

I wouldn't let that scare me off if the rest of the bike is good and the selling price is fair. It might be something as simple as a watered harness plug or a switch or a speed sensor. You can test the selectable clutch (when you go look at the bike) by applying battery voltage (+12 volts) to it using jumper wires after unplugging the clutch harness from the main wiring harness. If you hear a faint click and the front differential engages when you put voltage to it, you'll know the pricy-est parts are probably OK. Check the selectable system out in the service manual before you buy, so you'll be familiar with it when you get there.

 

[Downunder]

Thanks for that.

 

[retro]

Let us know how it goes for ya. Fair warning though, we like to see pics of every new ride. Have fun with it.

 

[fishfiles]

you see number 17 in this pic , it is a magnet that engages a collar to couple the front pinion and the drive shaft , there are sensors and electrical components between that shifter solenoid and the switch , so it could be a lot of things causing the problem , what I would do , as this 500 is just like my 450 as far as the front diff solenoid goes , I would get all four wheels off the ground , use a test light at the wires going to the solenoid and see if there is voltage making it down to to , could be the coupler stripped or the solenoid bad , if that doesn't find the problem , I would use a manual and back track the wiring till I found the problem which could be a speed sensor , switch , wire broke ,