Model year

[racer]

CAN YOU GET THE MODEL YEAR OUT OF ONE OF THE NUMBERS IN THE SERIAL NUMBER.it SUPPOSED TO BE A 98 OR 99,OR A PHONE NUMBER TO WHO CAN HELP ME,ALSO YOU GUYS TALK ABOUT CHAIN ADJUSTERS,MINE HAS NONE THAT I CAN SEE,IT HAS A FREE SPINNING SPROCKET WITH AN ADJUSTMENT ON IT,IS THAT ALL THERE IS,AND HOW MUCH SLACK DO YOU PUT IN THEM?THANK YOU JEFF

[amphibious drew]

Call RI with the serial number 1-800-255-2511. They will tell you what year it is. The "free spinning sprocket" is the chain adjuster. You want about 1/2inch of deflection up and down.