Periodic Inspection And Adjustment; Introduction; Periodic Maintenance Chart For The Emission Control System - Yamaha RST90GTY Service Manual

INTRODUCTION/PERIODIC MAINTENANCE CHART FOR

PERIODIC INSPECTION AND ADJUSTMENT

INTRODUCTION

This chapter includes all information necessary to perform recommended inspections and adjustments. These
preventive maintenance procedures, if followed, will ensure more reliable snowmobile operation and a longer
service life. In addition, the need for costly overhaul work will be greatly reduced. This information applies to
snowmobiles already in service as well as new snowmobiles that are being prepared for sale. All service tech-
nicians should be familiar with this entire chapter.

PERIODIC MAINTENANCE CHART FOR THE EMISSION CONTROL SYSTEM

Items marked with an asterisk should be performed by a Yamaha dealer as they require special tools, data
and technical skills.
ITEM
Spark plugs
* Valve clearance
* Crankcase breather system
* Fuel line
* Fuel injection
* Exhaust system
THE EMISSION CONTROL SYSTEM
REMARKS
• Check condition.
• Adjust gap and clean.
• Replace if necessary.
• Check and adjust valve clearance when engine is cold.
• Check breather hose for cracks or damage.
• Replace if necessary.
• Check fuel hose for cracks or damage.
• Replace if necessary.
• Check synchronization.
• Adjust if necessary.
• Check for leakage.
• Tighten or replace gasket if necessary.
2
INSP
ADJ
INITIAL EVERY
Seasonally
1 month
or
or 800 km
4000 km
(500 mi)
(2500 mi)
(40 hr)
(200 hr)
Every 40000 km (25000 mi)