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PERIODIC CHECKS AND ADJUSTMENTS
2-1
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 new machines that are being prepared for sale. All
service technicians should be familiar with this entire chapter.
MAINTENANCE INTERVALS CHART
Proper periodic maintenance is important. Especially important are the maintenance services
related to emissions control. These controls not only function to ensure air filter but are also vital to
proper engine operation and maximum performance.
PERIODIC MAINTENANCE/LUBRICATION INTERVALS
*1 For models equipped with a Yamaha muffler.
*2 Items marked with an asterisk require special tools, data and technical skills, have a Yamaha
dealer perform the service.
Daily 50 hrs 100 hrs 200 hrs 250 hrs 500 hrs 1000 hrs
Check spark plug
Check muffler and spark arrester (*1)
Check oil level
Change engine oil
Change oil filter
Clean fan case covers and cooling area
Check and change fuel filter
Check fuel line
Clean oil cooler fins
Check air filter element
Replace air filter element
Check air filter inner element
Replace air filter inner element
Check valve clearance (*2)
Clean combustion chamber (*2)
Idle speed (*2)
Fitting/fastener (*2)
Check leaks and anything operator notices
such as noises or abnormal operation.
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