2009 Yamaha Motorsports Big Bear 400 4x4 IRS Owners Manual - Page 119
2009 Yamaha Motorsports Big Bear 400 4x4 IRS Manual
Page 119 highlights
TIP If the specified idling speed cannot be obtained as described above, have a Yamaha dealer make the adjustment. EBU24044 Adjusting the throttle cable free play The throttle cable free play should be checked and, if necessary, adjusted at the intervals specified in the periodic maintenance and lubrication chart. The throttle cable free play should measure 3.0- 5.0 mm (0.12-0.20 in) at the throttle lever. Periodically check the throttle cable free play and, if necessary, adjust it as follows. TIP The engine idling speed must be checked, and adjusted if necessary, before adjusting the throttle cable free play. 1. Loosen the locknut. 2. To increase the throttle cable free play, turn the throttle cable free play adjusting bolt in direction (a). To decrease the throttle cable free play, turn the adjusting bolt in direction (b). 8-27 1. Locknut 2. Throttle cable free play adjusting bolt 3. Throttle cable free play 3. Tighten the locknut. 8 EBU24060 Valve clearance The valve clearance changes with use, resulting in improper air-fuel mixture and/or engine noise. To prevent this from occurring, the valve clearance must be adjusted by a Yamaha dealer at the intervals specified in the periodic maintenance and lubrication chart.