Husqvarna YTH1842 Lawn Mower User Manual


 
23
SERVICE AND ADJUSTMENTS
FIG. 28
TO REMOVE HOOD AND GRILL ASSEMBLY
(See Fig. 29)
• Raise hood.
• Unsnap headlight wire connector.
• Stand in front of tractor. Grasp hood at sides, tilt toward
engine and lift off of tractor.
• To replace, reverse above procedure.
TO REPLACE HEADLIGHT BULB
• Raise hood.
• Pull bulb holder out of the hole in the backside of the
grill.
• Replace bulb in holder and push bulb holder securely
back into the hole in the backside of the grill.
• Close hood.
INTERLOCKS AND RELAYS
Loose or damaged wiring may cause your tractor to run
poorly, stop running, or prevent it from starting.
• Check wiring. See electrical wiring diagram in the
Repair Parts section.
TO REPLACE FUSE
Replace with 20 amp automotive-type plug-in fuse. The
fuse holder is located behind the dash.
KEPS
NUT
HEX
BOLT
POSITIVE (RED)
CABLE
NEGATIVE
(BLACK) CABLE
TER MI NAL
COVER
FIG. 27
SEAT PAN
• Lift seat pan to raised position.
• Disconnect BLACK battery cable fi rst then RED battery
cable and carefully remove battery from tractor.
• Install new battery with terminals in same position as
old battery.
First connect RED battery cable to positive (+) terminal
with hex bolt and keps nut as shown. Tighten securely.
Slide terminal cover over terminal.
• Connect BLACK grounding cable to negative (-) ter-
mi nal with remaining hex bolt and keps nut. Tighten
se cure ly.
HEADLIGHT
WIRE
CONNECTOR
HOOD
FIG. 29
CABLE
CLAMP
SCREW
SPEED
CONTROL
BRACKET
THROTTLE LEVER
FIG. 30
ENGINE
TO AD JUST THROTTLE CON TROL CABLE
(See Fig. 30)
The throttle control has been preset at the factory and
adjustment should not be necessary. Check adjustment
as described below before loosening cable. If adjustment
is necessary, proceed as follows:
• With engine not running, move throttle control lever
from slow to choke position. Slowly move lever from
choke to fast position.
• Check to see if hole in throttle lever and hole in speed
control bracket are aligned.
• If holes are not aligned, loosen cable clamp screw and
align the holes by inserting a pencil or a 1/4" drill bit
through both holes.
• Pull throttle cable up to remove slack and tighten cable
clamp screw. Remove alignment pencil or drill bit.
TO ADJUST CARBURETOR
The carburetor has been preset at the factory and ad just ment
should not be necessary. However, minor ad just ment may be
required to compensate for differences in fuel, temperature,
altitude or load. If the carburetor does need adjustment,
see engine manual.
IHigh speed stop is factory adjusted. Do not adjust - dam-
age may result.
IMPORTANT: NEVER TAMPER WITH THE ENGINE
GOVERNOR, WHICH IS FACTORY SET FOR PROPER ENGINE
SPEED. OVER SPEED ING THE ENGINE ABOVE THE FACTORY
HIGH SPEED SETTING CAN BE DANGEROUS. IF YOU THINK
THE ENGINE-GOVERNED HIGH SPEED NEEDS ADJUSTING,
CONTACT YOUR NEAREST AUTHORIZED SERVICE CENTER/
DEPARTMENT, WHICH HAS PROPER EQUIP MENT AND
EXPERIENCE TO MAKE ANY NEC ES SARY ADJUSTMENTS.