Insp Adj; Periodic Inspection And Adjustment; Introduction; Periodic Maintenance Chart For The Emission Control System - Yamaha RS90GTZ Service Manual

PERIODIC INSPECTION AND ADJUSTMENT

INTRODUCTION

This chapter includes all information necessary to perform recommended inspections and adjust-
ments. 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 technicians 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

GENERAL MAINTENANCE AND LUBRICATION CHART

ITEM
Engine oil
* Engine oil filter cartridge
* Cooling system
Primary and secondary
*
clutches
* Drive chain
INTRODUCTION/PERIODIC MAINTENANCE
CHART FOR THE EMISSION CONTROL SYSTEM/
GENERAL MAINTENANCE AND LUBRICATION CHART
• 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.
• Change (warm engine before draining).
• Replace.
• Check coolant level.
• Air bleed the cooling system if necessary.
• Check engagement and shift speed.
• Adjust if necessary.
• Inspect sheaves for wear and damage.
• Inspect weights/rollers and bushings for wear for primary.
• Inspect ramp shoes/bushings for wear for secondary.
• Replace if necessary.
• Lubricate with specified grease.
• Check chain slack.
• Adjust if necessary.
REMARKS
REMARKS
2-1
INSP
ADJ
INITIAL EVERY
1 month Seasonally
or 800 km or 4,000 km
(500 mi) (2,500 mi)
(40 hr) (200 hr)
Every 40,000 km (25,000 mi)
INITIAL EVERY
1 month Seasonally
or 800 km or 4,000 km
(500 mi) (2,500 mi)
(40 hr) (200 hr)
Every
20,000 km
(12,000 mi)
Whenever operating eleva-
tion is changed.
Initial at 500 km (300 mi) and
every 800 km (500 mi)
thereafter.