Yamaha YP20G, Owner'S Manual

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PERIODIC MAINTENANCE
Maintenance chart
Regular maintenance is most important for best performance and safe operation.
WARNING
Stop the engine before starting maintenance work.
No. Item Remarks
Pre-opera-
tion check
(daily)
Initial Every
1 month or
20 Hr
3 month or
50 Hr
6 month or
100 Hr
12 month or
300 Hr
1.
**
Spark plug
Check condition,
adjust gap and clean.
Replace if necessary.
7
2. Engine oil
Check oil level.
7
Replace.
7 7
3.
**
Air filter
Clean.
Replace if necessary.
7
4. Fuel tank filter
Clean fuel cock and
fuel tank filter.
Replace if necessary.
7
5.* ** Valve clearance
Check and adjust
when engine is cold.
7
6. Fuel line
Check fuel hose for
cracks or damage.
Replace if necessary.
7
7.*
**
Crankcase
breather system
Check breather hose
for cracks or damage.
Replace if necessary.
7
8.* ** Idle speed
Check and adjust
engine idle speed.
7
9.
**
Exhaust system
Check for leakage.
Retighten or
replace gasket if necessary.
7
Check muffler screen and
spark arrester. Clean or
replace if necessary.
7
10.
**
Choke lever Check choke operation.
7
11.* Cooling system Check fan damage.
7
12. Starting system
Check recoil starter
operation.
7
13.* **
Decarbonization
More frequently if
necessary.
After every 500 Hrs.
14. Water pump
Check for leakage.
Retighten or replace
O-ring and/or gasket.
7
15.* Fittings/Fasteners
Check all fittings and
fasteners.
Correct if necessary.
7
* : It is recommended that these items be serviced by a Yamaha dealer.
** : Related to emission control system.
NOTICE
Use only Yamaha specified genuine parts for replacement. Ask an authorized
Yamaha dealer for further attention.
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