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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 opera-
tion and a longer service life. The need for costly overhaul work will be greatly reduced. This infor-
mation 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
Item
Spark plug
Fuel
Fuel hose
Engine oil
Air filter element
Muffler screen
Fuel tank filter
Fuel strainer
Crankcase breather
hose
Cylinder head
Valve clearance
Idle speed
Recoil starter
Fittings/fasteners
The point where abnormality was recognized by use.
Routine
• Check condition.
• Clean and replace if necessary.
• Check fuel level and leakage.
• Check fuel hose for cracks or dam-
age.
• Replace if necessary.
• Check oil level in engine.
• Replace.
• Check condition.
• Clean.
• Check condition.
• Clean and replace if necessary.
• Clean and replace if necessary.
• Clean and replace if necessary.
• Check breather hose for cracks or
damage.
• Replace if necessary.
• Decarbonize cylinder head.
• More frequently if necessary.
• Check and adjust valve clearance.
• Check and adjust idle speed.
• Check recoil starter for damage.
• Check all fittings and fasteners.
• Correct if necessary.
Pre-
operation
check
2-1
CHK
ADJ
Every
6 months
12 months
or 100 Hr
or 300 Hr
√
√
√
√
√ (*1)
√ (*2)
√
After every 500 Hrs.
√
√
√
√
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Troubleshooting
