Nakayama SM9800, User Manual

Page: 20 / 43

EN
20
Removal from Storage
Before reusing, service the engine in accordance with the instruction of the table.
Storage Time Service Item
Within one month None
One - two months Drain out original fuel of the fuel tank and refuel
Two month - one year
Drain out original fuel of the fuel tank and refuel
Drain out fuel in the carburetor 1
Empty the deposit cup 2
Above one year
Drain out original fuel of the fuel tank and refuel
Empty the fuel cup in the carburetor 1
Empty the deposit cup 2
(1)Screw off the drain plug and drain out fuel in the carburetor.
(2)Turn off the engine switch first,disconnect the deposit cup and empty it. Note: for the sake of environmental protection, we recomment to fill the discard
-
ed fuel into a closed container and bring to local recyling station. Never pour freely -
WARNING:
Fuel is extremely flammable and explosive under certain conditions. Keep cigarette, open flames and sparks away from operating site.
Problem Cause Remedy
1. Not normal cylinder compression
2. Not normal spark plug spark
3. Fuel system functionality
4. Fuel supply not smooth or no fuel smooth Not enough fuel in fuel tank
Air vent in the fuel filler cap is clogged
Fuel cock is clogged
Improper or clogged main oil flow hole
Need valve is not closed properly or start hole
clogged
Float is damaged or sticking
Fill fuel, open fuel cock
Dredge air vent
Clean first and then dredge
Readjust or clean, blow to get through
Dismantle needle valve and repair, clean, blow
to get through
Repair float
1. Not normal cylinder compression
2. Not normal spark plug spark
3. Fuel system functionality
4. Fuel supply not smooth or no smooth fuel Fuel is too filthy or deteriorated
There is water in fuel
Too much fuel in engine
Wrong fuel brand
Replace
Replace
Drain extra fuel, dry up spark plug electrodes
Select proper fuel brand corresponding with
the requirements.
1. Not normal cylinder compression
2. Not normal fuel supply
3. Normal high - pressure coil spark
4. Spark plug is in bad conditions Too much carbon deposit and dirt around elec -
trodes
Electrodes or insulators are seriously damaged
Improper electrodes gap
Clear dirt or any deposits
Replace spark plug
Adjust to proper value
1. Not Normal cylinder compression
2. Not normal fuel supply
3. No high pressure coil spark
4. Not normal spark plug function High pressure coil is damaged
Ignition coil is damaged
Magneto loses magnetism Replace
Replace
Replace
1. Poor cylinder compression
2. Not normal fuel supply
3. Not normal ignition Piston ring is worn or over wear limit
Piston ring is broken
Piston ring is sticking
Spark plug not installed, tightened / without gasket
Air leakage between cylinder block & cylinder head
Replace
Replace
Clear up carbon fouling
Tighten with a gasket in
Check cylinder gasket and the flatness of the
surface by which cylinder block contacting
with cylinder head, tighten cylinder head bolts
in stipulated order to stipulated torque.
I. Difficulty starting with the engine
Troubleshooting
1. By using kick-starter
WARNING:
- When testing the spark plug never hold the high voltage wire of the spark plug with wet hands.
- Make sure there is not spilled fuel outside the engine and that the spark plug isn't dipped with fuel.
- To prevent fire, keep sparks far away from the spark plug mount hole.