Operation At High Altitudes - Zipper Mowers zi-ste2000iv Operation Manual

a) Totally turn the valve to the "OPEN" position clockwise.
1 – The ventilating pole of fuel-filling lid (Fig. K)
b) Turn the switch of the engine to the "OPEN" position
c) Turn the pulling pole of the air-blocking valve to the "CLOSE" position
1 – Close (Fig. M) 2 – Pulling pole of the air-blocking valve (Fig. M) 3 – Close (Fig. M)
a) Pull the starting hold (Fig. N) slightly
until you feel the pressure, then re-
lease the hold slowly by hand.
f) When the engine is warming up, turn
the pulling pole of the air-blocking
valve to the "START" position.(Fig.
O)
1 – Run / operate (Fig. O)

Operation at high altitudes

At high altitudes, the standard carburetor air and
fuel mixture will become excessively dense, caus-
ing the decrease of the engine's functions, and
increase of fuel consumption. To enhance the per-
formance of the engine in high-altitude areas, you
can make special adjustments to carburetor. If
you use the engine at an altitude of over
1500meters (5000 feets), please ask the
authorized agent to modify the carburetor.
Even though you use the proper nozzle, the horsepower of the engine will still decline 3.5% as
the altitude increases every 300meters (1000 feets). If these adjustments are not made, the alti-
tude will have greater influence on power.
2 – Pulling pole of the air-blocking
valve (Fig. O)
2 – Switch of the engine (Fig. L)
I M P O R T A N T
when the engine is hot or the envi-
ronmental temperature is relatively
high, do not use the air-blocking
valve.
Do not let the starting hold (Fig. N)
rebound, and release it slowly by
hand.
If the engine can not restart after
halting, check the oil level ahead of
other failures.
3 – Start (Fig. O)
The nozzle of the engine is de-
signed for normal altitude areas. If
it is put to use in higher altitudes,
the outputting power may decline
and become too hot, and even the
engine will be damaged seriously
because the ratio of the air and
burning fuel is too low.