7.ADJUSTING CARBURETOR (See Fig.7-o)
Adjusting idling rpm.
When adjust screw is turned right, engine rpm increases, and when it is turned left, rpm decreases. (Refer to illustration.)
Normal idling rpm | 3000 ± 100rpm |
NOTE
The carburetor greatly affects the performance of the engine.
Since it has been adjusted carefully at our factory GB before shipment, avoid adjusting unless absolutely necessary. If adjustments are needed, contact your
nearest dealer.
8.FUEL HOSE REPLACEMENT (See Fig.7-!0)
WARNING
Take extreme caution when replacing fuel hose ; gasoline is extremely flammable.
Replace the fuel hose every 2 years. If fuel leaks from fuel hose, replace the fuel hose immediately.
9.CHECKING BOLTS, NUTS AND SCREWS
■Retighten loose bolts and nuts.
■Check for fuel and oil leaks.
■Replace damaged parts with new ones.
6. PREPARATIONS FOR STORAGE
1. WATER (See Fig.8-q)
Drain all water from the drain plug.
CAUTION
When retightening drain plug, be sure to clean the drain plug and the thread of casing. Otherwise, the thread may be damaged.
2. DISCONNECT THE DELIVERY HOSE
Tilt the pump and drain all water from delivery hole. Severe damage to pump may result if water freezes in the pumping chamber.
3. DISCHARGE FUEL
WARNING 
Flame Prohibited
In case the engine is not going to be used for more than 1 month, discharge fuel thoroughly from fuel tank and carburetor in order to prevent from hard starting and/or poor engine operation due to deteriorated fuel when you use the engine next time.
■Pour out the fuel in the tank from its filler neck.
■Push the primer pump of the carburetor until the fuel in it is thoroughly discharged.
4.ENGINE OIL (See Fig.8-w)
■Change the engine oil with fresh oil.
■Remove the spark plug, pour about 5 cc of engine oil into the cylinder, slowly pull the starter handle of the recoil starter 2 or 3 times, and reinstall the spark plug.
5.CLEAN AND STORE
■Slowly pull the recoil starter handle until resistance is felt and leave it in that position.
■Clean the pump thoroughly with an oiled cloth, put the cover on, and store the pump indoors in a well ventilated, low humidity area.
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