Periodic Checks And Adjustments; Introduction; Periodic Maintenance Chart For The Emission Control System - Yamaha YP400T, YP400V, YP400W Service Manual

INTRODUCTION/PERIODIC MAINTENANCE CHART
EAS00036

PERIODIC CHECKS AND ADJUSTMENTS

INTRODUCTION

This chapter includes all information necessary to perform recommended checks and adjustments.
If followed, these preventive maintenance procedures will ensure more reliable vehicle operation, a
longer service life and reduce the need for costly overhaul work. 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.
PERIODIC MAINTENANCE CHART FOR THE EMISSION CONTROL
SYSTEM
NO. ITEM
Fuel line
1 *
(See page 3-30.)
Spark plug
2
(See page 3-18.)
Valve clearance
3 *
(See page 3-11.)
Crankcase
4 * breather system
(See page 3-31.)
Electronic fuel
5 * injection
(See page 3-17.)
Evaporative emis-
sion control sys-
6 *
tem
(See page 7-41.)
Air induction sys-
7 * tem
(See page 7-38.)
* Since these items require special tools, data and technical skills, have a Yamaha dealer perform the service.
FOR THE EMISSION CONTROL SYSTEM
ROUTINE
• Check fuel hoses for cracks or damage.
• Replace if necessary.
• Check condition.
• Adjust gap and clean.
• Replace every 19000 km (12000 mi) or
18 months.
• Check and adjust valve clearance when
engine is cold.
• Check breather hose for cracks or damage.
• Replace if necessary.
• Check engine idle speed.
• Check control system for damage.
• Replace if necessary.
• Check the air cut-off valve, reed valve, and
hose for damage.
• Replace any damaged parts.
INITIAL
1000 km 7000 km
(600 mi) (4000 mi)
or or
1 month 6 months
√
√
Every 42000 km (26600 mi)
√
√ √
3 - 1
CHK
ADJ
ODOMETER READINGS
13000 km 19000 km 25000 km
(8000 mi) (12000 mi) (16000 mi)
or or or
12 months 18 months 24 months
√ √ √
√ √
Replace.
√ √ √
√ √ √
√
√
31000 km
(20000 mi)
or
30 months
√
√
√
√