Jonsered LT2220 CMA2, Operator'S Manual

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