Joyner Dirt Devil 250 2004 Owner's Manual And Parts Manual page 22

SERVICE INSTRUCTIONS
B. Engine Lubrication
You must change the oil in the crankcase after the first 5 hours of operating of your new engine
Fig. 9) and after 10 hours of use thereafter. This will insure proper lubrication of internal parts and
prevent costly repairs due to excessive wear.
a.
Remove fill plug located on rear side of engine. Tip
kart backwards slightly by raising up
the front end and drain oil into suitable container.
b.
Replace fill plug and tighten securely.
Place kart in a level position.
c. Refill crankcase (approximately 1000 ml) to top of
filler neck with SAE 10W/30 oil.
Use same grade of oil as used originally.
d.
Check oil level before each use of dart or after each
10 hours of operation. Add oil to bring up to proper lever.
Do not mix various grades of oil.
C. Engine Coolant
You must check the coolant for lack. It is lack, you need to refill coolant into the radiator (approximately
1800 ml) or reserve coolant. The lack of coolant will cause engine overheat. This can cause engine
damage.
Figure 9
(See