Sears 944.621534, Owner'S Manual

Page: 14 / 32

14
ENGINE
Maintenance, repair, or re place ment of the emission con-
trol devices and systems, which are being done at the
cus tom ers expense, may be performed by any non-road
engine repair establishment or individual. War ran ty repairs
must be per formed by an au tho rized en gine man u fac tur er's
service out let.
TO ADJUST CARBURETOR
The carburetor has a high speed fi xed jet and has been
preset at the factory and adjustment should not be nec-
es sary. However, minor adjustments may be required to
compensate for differences in fuel, temperature, altitude
or load. If the carburetor does need adjustment, proceed
as follows.
SERVICE AND ADJUSTMENTS
V-BELT
IDLER
PUL LEY
TRANS MIS SION
PUL LEY
BELT
GUIDE
ENGINE PULLEY
BELT
GUIDE
TO REPLACE V-BELT (See Fig. 21)
Replace V-belt if it has stretched considerably or if it has
cracks or frayed edges.
Belt guard must be removed to service belt. See “TO RE-
MOVE BELT GUARD” in this section of manual.
BELT REMOVAL
• Remove V-belt from transmission pulley fi rst and then
from engine pulley.
FIG. 21
BELT REPLACEMENT
• Install new V-belt to engine pulley fi rst then to trans-
mis sion pulley. Be sure belt is positioned on inside
groove of both pulleys, inside all belt guides and rests
on idler pulley.
CHECK TINE OPERATION
• See “TINE OPERATION CHECK” in this section of
manual.
REPLACE BELT GUARD
IMPORTANT: NEVER TAMPER WITH THE EN GINE
GOVERNOR, WHICH IS FACTORY SET FOR PROPER ENGINE
SPEED. OVER SPEED ING THE ENGINE ABOVE THE FACTORY
HIGH SPEED SET TING CAN BE DANGEROUS. IF YOU THINK
THE ENGINE-GOVERNED HIGH SPEED NEEDS ADJUSTING,
CON TACT YOUR NEAREST AUTHORIZED SERVICE CENTER/
DEPARTMENT, WHICH HAS THE PROPER EQUIP MENT AND
EX PE RI ENCE TO MAKE ANY NEC ES SARY ADJUSTMENTS.