EBS00029 PERIODIC CHECKS AND ADJUSTMENTS INTRODUCTION This chapter includes all information necessary to perform recommended checks and adjustments. These preventive maintenance procedures, if followed, will ensure more reliable vehicle operation and a longer service life. The need for costly overhaul work will be greatly reduced. This information applies to vehicles already in service as well as to new vehicles that are being prepared for sale. All service technicians should be familiar with this entire chapter. EBU21742 PERIODIC MAINTENANCE CHART FOR THE EMISSION CONTROL SYSTEM NOTE: For ATVs not equipped with an odometer or an hour meter, follow the month maintenance inter- vals.
For ATVs equipped with an odometer or an hour meter, follow the km (mi) or hours maintenance intervals. However, keep in mind that if the ATV isn’t used for a long period of time, the month maintenance intervals should be followed. Items marked with an asterisk should be performed by a Yamaha dealer as they require special tools, data and technical skills. INTRODUCTION/PERIODIC MAINTENANCE CHART FOR THE EMISSION CONTROL SYSTEM CHK ADJ NO.
ITEM CHECK OR MAINTE- NANCE JOB month Whichever comes first km (mi) hours INITIAL EVERY month 1 3 6 6 12 km (mi) 320 (200) 1300 (800) 2500 (1600) 2500 (1600) 5000 (3200) hours 20 80 160 160 320 1 * Fuel line • Check fuel hoses for cracks or other damage, and replace if necessary. √ √ √ 2 Spark plug • Check condition and clean, regap, or replace if nec- essary. √ √ √ √ √ 3 * Valves • Check valve clearance and adjust if necessary. √ √ √ √ 4 * Fuel injection • Check and adjust engine idle speed. √ √ √ √ √ 5 * Crankcase breather system • Check breather hose for cracks or other damage, and replace if necessary. √ √ √ 6 * Exhaust system • Check for leakage and replace gasket(s) if neces- sary.
• Check for looseness and tighten all screw clamps and joints if necessary. √ √ √ 7 Spark arrester • Clean. √ √ √