Husqvarna 7021RC 用户手册

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9
ADD GASOLINE (See Fig. 12)
• 
Fill fuel tank to bottom of tank fi ller neck.  Do not over-
fi ll.  Use fresh, clean, regular unleaded gasoline with 
a minimum of 87 octane.  Do not mix oil with gasoline.  
Purchase fuel in quan ti ties that can be used within 30 
days to assure fuel freshness.
CAUTION:  Wipe off any spilled oil or 
fuel.  Do not store, spill or use gasoline 
near an open fl ame.
Alcohol blended fuels (called gasohol 
or using ethanol or methanol) can at-
tract moisture which leads to separation 
and for ma tion of acids during storage.  
Acidic gas can damage the fuel sys-
tem of an engine while in storage.  To 
avoid engine problems, the fuel system 
should be emptied before stor age of 
30 days or longer.  Empty the gas tank, 
start the engine and let it run until the 
fuel lines and carburetor are empty.  Use 
fresh fuel next season.  See Storage 
In struc tions for additional information.  
Never use engine or carburetor cleaner 
products in the fuel tank or permanent 
damage may occur.
MOWING TIPS 
CAUTION: Do not use de-thatcher blade 
attachments on your mower.  Such at-
tachments are hazardous, will damage 
your mower and could void your warranty.
• 
Under certain conditions, such as very tall grass, it 
may be necessary to raise the height of cut to reduce 
pushing effort and to keep from overloading the engine 
and leaving clumps of grass clippings. It may also be 
necessary to reduce ground speed  and/or run the lawn 
mower over the area a second time.
• 
For extremely heavy cutting, reduce the width of cut 
by overlapping previously cut path and mow slowly.
• 
For better grass bagging and most cutting conditions, 
the engine speed should be set in the fast position.
• 
Pores in cloth grass catchers can become fi lled with 
dirt and dust with use and catchers will collect less 
grass.  To prevent this, regularly hose catcher off with 
water and let dry before using.
• 
Keep top of engine around starter clear and clean of 
grass clippings and chaff.  This will help engine air fl ow 
and extend engine life.
MULCHING MOWING TIPS
IMPORTANT:  FOR BEST PERFORMANCE, KEEP MOWER 
HOUSING FREE OF BUILT-UP GRASS AND TRASH. SEE 
“CLEANING” IN THE MAINTENANCE SECTION OF THIS MANUAL.
•   The special mulching blade will recut the grass clip-
pings many times and reduce them in size so that as 
they fall onto the lawn they will disperse into the grass 
and not be noticed.  Also, the mulched grass will biode-
grade quickly to provide nutrients for the lawn.  Always 
mulch with your highest engine (blade) speed as this 
will provide the best recutting action of the blades.
•   
Avoid cutting your lawn when it is wet.  Wet grass tends 
to form clumps and interferes with the mulching action.  
The best time to mow your lawn is the early afternoon.  
At this time the grass has dried, yet the newly cut area 
will not be exposed to direct sunlight.
•   For best results, adjust the lawn mower cutting height 
so that the lawn mower cuts off only the top one-third 
of the grass blades (See Fig. 14).  If the lawn is over-
grown it will be necessary to raise the height of cut to 
reduce pushing effort and to keep from overloading 
the engine and leaving clumps of mulched grass. For 
extremely heavy mulching, reduce your width of cut by 
overlapping previously cut path and mow slowly.
OPERATION
TO STOP ENGINE
• 
To stop engine, release operator presence control bar. 
Wait until blade and all moving parts have stopped and 
turn fuel valve to OFF position if you do not intend to 
re start the engine soon.
TO START ENGINE (See Fig. 13)
NOTE: Due to protective coatings on the engine, a small 
amount of smoke may be present during the initial use of 
the product and should be considered normal.
1.  Be sure fuel valve is in the ON po si tion.
2.  Move choke lever to ON (   ) position.
3.  Hold operator presence control bar down to the han dle 
and pull starter handle quickly. Do not allow starter rope 
to snap back.
NOTE: The choke lever automatically begins moving to 
the OFF position when operator presence control bar is 
held down to handle.
•   
Certain types of grass and grass conditions may require 
that an area be mulched a second time to completely 
hide the clippings.  When doing a second cut, mow 
across (perpendicular) to the fi rst cut path.
•  
Change your cutting pattern from week to week.  Mow 
north to south one week then east to west the next week.  
This will help prevent matting and graining of the lawn.
FUEL VALVE LEVER
ON
(
 
 
)
 OFF
FIG. 13
ON
 OFF
CHOKE LEVER
FIG. 14
MAX 1/3