Jonsered LT2220 CMA2 - Manual (Page 20)

20
6 STAR PATTERN BLADE
The center of this blade has a 6 star pattern. The bolt at-
tach ing this blade has Left Hand threads that loosens by
turning ( ) clockwise and tight en by turning ( ) coun ter -
clock wise.
Fig. 22
LH
BLADE BOLT
LEFT HAND
THREADED
LOCK
WASHER
FLAT
WASHER
BLADE
MANDREL
ASSEMBLY
6 STAR PATTERN
6 STAR CENTER HOLE
TRAILING
EDGE
MAINTENANCE
BATTERY
Your tractor has a battery charging system which is suf fi cient
for normal use. However, periodic charging of the battery
with an automotive charger will extend its life.
• Keep battery and terminals clean.
• Keep battery bolts tight.
• Keep small vent holes open.
• Recharge at 6-10 amperes for 1 hour.
NOTE: The original equipment battery on your tractor is
main te nance free. Do not attempt to open or remove caps
or covers. Adding or checking level of electrolyte is not
necessary.
TO CLEAN BATTERY AND TERMINALS
Corrosion and dirt on the battery and terminals can cause
the battery to “leak” power.
• Remove battery cover.
• Disconnect BLACK battery cable first then RED bat-
tery cable and remove battery from tractor.
• Rinse the battery with plain water and dry.
•
Clean terminals and battery cable ends with wire brush
until bright.
• Coat terminals with grease or petroleum jelly.
• Reinstall battery (See “CONNECT BATTERY” in the
As sem bly sec tion of this manual).
V-BELTS
Check V-belts for deterioration and wear after 100 hours
of operation and replace if necessary. The belts are not
ad just able. Re place belts if they begin to slip from wear.
TRANSAXLE COOLING
The transmission fan and cooling fins should be kept clean
to assure proper cooling.
Do not attempt to clean fan or transmission while engine
is running or while the transmission is hot. To prevent pos-
si ble damage to seals, do not use high pressure water or
steam to clean transaxle.
• Inspect cooling fan to be sure fan blades are intact and
clean.
• Inspect cooling fins for dirt, grass clippings and other
materials. To prevent damage to seals, do not use com-
pressed air or high pressure sprayer to clean cooling
fins.
TRANSAXLE PUMP FLUID
The transaxle was sealed at the factory and fluid main te -
nance is not required for the life of the transaxle. Should
the transaxle ever leak or require servicing, contact your
near est au tho rized ser vice center/department.
BLADE REMOVAL
• Raise mower to highest position to allow access to
blades.
• Remove blade bolt, lock washer and flat washer se cur ing
blade.
• Install new or resharpened blade with trail ing edge up
towards deck as shown.
IMPORTANT: To ensure proper as sem bly, center hole in
blade must align with star on mandrel assembly.
• Reassemble blade bolt, lock washer and flat washer
in exact order as shown.
• Tighten blade bolt securely (27-35 Ft. Lbs. torque).
IMPORTANT: Blade bolt is grade 8 heat treated
ENGINE
LUBRICATION
Only use high quality detergent oil rated with API service
classification SG-SL. Select the oil’s SAE viscosity grade
according to your expected operating temperature.
NOTE: Although multi-viscosity oils (5W30, 10W30 etc.)
improve starting in cold weather, they will result in increased
oil consumption when used above 32°F. Check your engine
oil level more frequently to avoid possible engine damage
from running low on oil.
Change the oil after every 50 hours of operation or at least
once a year if the tractor is not used for 50 hours in one
year.
Check the crankcase oil level before starting the engine
and after each eight (8) hours of operation. Tighten oil fill
cap/dipstick securely each time you check the oil level.
TEMPERATURE RANGE ANTICIPATED BEFORE NEXT OIL CHANGE
SAE VISCOSITY GRADES
-20 0 30 40 80 100
-30 -20 0 20 30 40
F
C
32
-10 10
60
5W-30
SAE 30
oil_visc_chart1_e