Joyner JNSZ800DL Owner's Manual page 87

6 . Check lubrication pressure of gasoline engine
when gasoline engine running at idle, lubricant pressure warming lamp should be lighted off. or
otherwise, it indicates the pressure too low, and you should stop engine and check it ,and see
whether it is sufficient, and the oil road whether it is leak or jammed. Check the engine oil
screen and filter whether they are jammed.
d. Care and maintenance of cooling system
1 . Coolant of gasoline engine is glycol water antifreeze mixture. Don't use antifreeze mixture
with different character, river water and well water etc. coolant amount should be enough
(3.6L), coolant add-in amount should be up to the scale "full". If the level is lower, you
should add in on time.
2. check and adjust belt of water pump
Apply 98N pressure in the position which is in middle of the between water pump belt
and generator belt, its bending deflection should be 7.5-11.5mm, it is shown as fig. 45.
belt of water pump
fig.44
sheave of water pump
generator sheave
driving triangle sheave
Fig. 45
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About engine