Yamaha 2005 raptor 80- clutch not engaging

Try this site for your manual. https://searchmanuals.net/search7/?keyword=%2Bowners+%2Bmanual&gclid=Cj0KCQiAzePjBRCRARIsAGkrSm4hwGgMJ4loxVKnk_d9loNSyMnzjcinCTYKx6DBNotuk4W7EdNURhoaAggqEALw_wcB

Make sure that the shifter did not move out of N. Recheck your battery connections.

sounds like the starter clutch is bad. the rollers get worn or the sprag gear gets worn so it will not grab and start the motor. check that out. you will have to take the engine side cover off to see it.

The if the clutch is operating ok the problem is in the transmission shift parts.

Have you checked the clutch safety switch(on the handlebar lever) Or the neutral switch.

if its semi automatic then youll need to rebuild the clutch which is inside the motor. if its not semi automatic, then pull the top end off where the clutch cable goes into the top end, and there will probably be a broken spring. or you just need a new clutch cable

that a problem with shift fork ,if you want a qite fixs just a friend to gab the handelbars n pull n push bake n forth wile u r setinjg on youer quad n push dound with a sharp dound ward movment like you ware trying to put it 2 gaer this will free up you clutch n let you know for sure that it is you fork

3 psi is book But most guys run 5 psi as standard on all ATV's

Sounds like its time for a float level adjustment - BETTER YET - complete carb cleaning and setting by a qualified professional...