Chapter 2. Periodic Checks And Adjustments; Introduction; Maintenance Intervals Chart; Periodic Maintenance/Lubrication Intervals - Yamaha MZ250 Service Manual

INTRODUCTION/MAINTENANCE INTERVALS CHART/

PERIODIC MAINTENANCE/LUBRICATION INTERVALS

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 pre-
pared 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
Item
• Check condition.
Spark plug • Clean and replace if
necessary.
• Check fuel level and
Fuel
leakage.
• Check fuel hose for
Fuel hose cracks or damage.
• Replace if necessary.
• Check oil level in engine.
Engine oil
• Replace.
Air filter • Check condition.
element • Clean.
• Check condition.
Spark arrester • Clean and replace if
necessary.
• Clean and replace if
Fuel tank filter
necessary.
• Clean and replace if
Fuel strainer
necessary.
• Check breather hose for
Crankcase
cracks or damage.
breather hose
• Replace if necessary.
• Decarbonize cylinder
head.
Cylinder head
• More frequently if nec-
essary.
Valve • Check and adjust when
clearance engine is cold.
• Check and adjust idle
Idle speed
speed.
Pre-
Routine operation
check
√
√
√
2-1
Initial
1 month 3 months 6 months
or 20 Hrs or 50 Hrs or 100 Hrs
√
√
√ (*1)
CHK
ADJ
Every
12 months
or 300 Hrs
√
√
√
√
√
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