Chk Adj; Periodic Checks And Adjustments; Introduction; Periodic Maintenance Chart For The Emission Control - Yamaha YFM250RX 2008 Service Manual

INTRODUCTION/PERIODIC MAINTENANCE
CHART FOR THE EMISSION CONTROL SYSTEM
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 machine operation
and a longer service life. The need for costly overhaul work will be greatly reduced. This information
applies to machines already in service as well as to new machines that are being prepared for sale.
All service technicians should be familiar with this entire chapter.

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 main-
tenance 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.
NO. ITEM
• Check fuel hoses for cracks or other damage, and replace
1 * Fuel line
2 Spark plug • Check condition and clean, regap, or replace if necessary.
3 * Valves • Check valve clearance and adjust if necessary.
• Check starter (choke) operation and correct if necessary.
4 * Carburetor
• Check engine idling speed and adjust if necessary.
Crankcase breather • Check breather hose for cracks or other damage, and
5 *
system
• Check for leakage and replace gasket(s) if necessary.
6 * Exhaust system • Check for looseness and tighten all screw clamps and
7 Spark arrester • Clean.
Whichever
CHECK OR MAINTENANCE comes
JOB
if necessary.
replace if necessary.
joints if necessary.
INITIAL
month 1
km 320
first
(mi) (200)
hours 20
√
√
3-1
CHK
ADJ
EVERY
3 6 6
1300 2500 2500 5000
(800) (1600) (1600) (3200)
80 160 160 320
√ √
√ √ √
√ √
√ √ √
√ √
√ √
√ √
12
√
√
√
√
√
√
√