Recently helped my stepbrother get an old (late 90's?Honda Foreman 450 manual shift.. It had been sitting for (at least) a couple of years. Just got it running, but it won't shift through the gears. The display is all messed up, and doesn't show the gears/hours/miles. But the green "neutral" light, and red "reverse" light go on and off when u try to shift it with the foot lever. It clicks down by the foot shift lever, but it won't go into any gear. U hit the gas, and it just revs up like it's still in neutral. U can see the front driveshaft spinning for the 4x4. But nothing is engaging, and the bike won't move. If anyone has any suggestions on what the problem is, please let me know. Thanks.