Sears 917.25148 Lawn Mower User Manual


 
OPERATION
system of an engine while in storage. To avoid engine o Do not mow grass when it is wet,, Wet grass will plug
problems, the fuef system should be emptied before stor- mower and leave undesirable clumps Allow grass to
age of 30 days or longer. Drain the gas tank, start the
engine and let it run until the fuel lines and carburetor are
empty. Llse fresh fuel next season,, See Storage Instruc-
tions for additional information, Never use engine or
carburetor cleaner products in the fuel tank or permanent
damage may occur,
...... i
A CAUTION: Fill to bottom of gas tank
filler neck. Do not overfill, Wipe off any
spilled oil or fuel. Do not store, spill or
use gasoline near an open flame.
TO START ENGINE (See Fig. 7)
When starting engine for the first time or if engine has run
out of fuel, it will take extra cranking time to move fuel from
the tank to the engine
o Depress clutch/brake pedal and set parking brake.
. Place gearshift lever in neutral (N) position
o Move attachment clutch to "DISENGAGED" position.
o Pul! choke control out to choke (tXt) position for cold
engine start, For warm engine start do not use choke
control.
o Move throttle controi to midway between fast (.t_) and
slow (._.) positions
o Insert keyinto ignition andturn keyclockwiseto"START"
position and release key as soon as engine starts. Do
not run starter continuously for more than fifteen
seconds per minute. If engine does not start after
several attempts, move throttle control to fast (.t_)
position, wait a few minutes and try again_,
. When engine starts, slowly push choke control in
o Move throttle control to fast ('_) position.,
- Allow engine to warm Lip for a few minutes before
engaging drive or attachments.
NOTE: tf at a high altitude (above 3000 feet) or in cold
temperatures (below 32°F), the carburetor fuel mixture
may need to be adjusted for best engine performance, See
"TO ADJUST CARBURETOR" in the Service and Adjust-
ments section of this manual
MOWING TgPS
o Tire chains cannot be used when the mower housing is
attached to tractor,,
o Mower should be properly leveled for best mowing
performance. See "TO LEVEL MOWER HOUSING" in
the Service and Adjustments section of this manual,
* The left hand side of mower should be used for trim-
ming
° Drive so that clippings are discharged onto the area
that has been cut, Have the cut area to the right of the
machine. This wilt result in a more even distribution of
clippings and more uniform cutting.,
o When mowing large areas, start by turning to the right
so that clippings will discharge away from shrubs,
fences, driveways, etc After one or two rounds, mow
in the opposite direction making left hand turns until
finished (See Fig. 10)
o If grass is extremely tall, it should be mowed twice to
reduce load and possible fire hazard from dried clip-
pings,, Make first cut relatively high; the second to the
desired height,
dry before mowing
Always operate engine at full throttle when mowing to
assure better mowing perfon-nance and proper dis-
charge of material. Regulate ground speed by select-
ing a tow enough gear to give the mower cutting
performance as well as the quality of cut desired,
o When operating attachments, select a ground speed
that wilt suit the terrain and give best performance of
the attachment being used
....<III
FIG. 11
MULCHING MOWING TIPS
IMPORTANT: FOR BEST PERFORMANCE, KEEP
MOWER HOUSING FREE OF BUILT-UP GRASS AND
TRASH, CLEAN AFTER EACH USE,
The special mulching blade will recut the grass dip-
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
biodegrade quickly to provide nutrients for the lawn.
Always mulch with your highest engine (blade) speed
as this wilt 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 and the newly cut area
wilt not be exposed to the direct sun
o For best resutts, adjust the mower cutting height so that
the mower cuts off only the top one-third of the grass
blades (See Fig. 12) For extremely heavy mulching,
reduce your width of cut on each pass and mow slowly
. Certain types of grass and grass conditions may re-
quire that an area be mulched a second tirne to com-
pletely hide the clippings When doing a second cut,
mow across or perpendicular to the first 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,
MAX 1t3
15 FIG. 12