Husqvarna 67521 HV ユーザーズマニュアル

•      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.

•      To  stop  engine,  release  operator  presence  con trol 

bar.

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.   To start a cold engine, push primer three (3) times 

before trying to start. Use a fi rm push. This step is not 
usually necessary when starting an engine which has 
already run for a few minutes.

2.      Hold operator presence control bar down to the han dle 

and pull starter handle quickly. Do not allow starter rope 
to snap back.

NOTE: In cooler weather it may be necessary to repeat 
priming steps. In warmer weather over priming may cause 
fl ooding and engine will not start. If you do fl ood engine, 
wait a few minutes before attempting to start and do not 
repeat priming steps. 

•     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.

IMPORTANT:  FOR BEST PERFORMANCE, KEEP MOWER 
HOUSING FREE OF BUILT-UP GRASS / 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. 13).  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.

•        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 change to east to west the 
next week.  This will help prevent matting and graining 
of the lawn.