Jonsered LM 2146 CMD Operator's Manual page 12

Maintenance
Do a general inspection
Examine the oil level
Clean the product
Examine the cutting equipment
Examine the cutting cover*
Examine the engine brake handle*
Examine and adjust the drive (clutch wire)
Examine the muffler*
Examine the spark plug
Change the oil (the first time after 5 h use, then after each 50 h use)
Change the air filter
Examine the fuel system
To do a general inspection
• Make sure that the nuts and screws on the product
are tightened.
To clean the product externally
• Use a brush to remove leaves, grass and dirt.
• Make sure that the air intake on the top of the engine
is not blocked.
• Do not use a high pressure washer to clean the
product.
• If you use water to clean the product, do not flush
water directly on the engine.
To clean the inner surface of the cutting
cover
1. Empty the fuel tank.
2. Put the product on its side with the muffler down.
CAUTION: If the product is put with the
air filter down, the engine can become
damaged.
3. Hose down the inner surface of the cutting cover
with water.
To examine the cutting equipment
WARNING: To prevent accidental start
remove the ignition cable from the spark
plug.
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WARNING: Use protective gloves when you
do maintenance on the cutting equipment.
The blade is very sharp and cuts can easily
occur.
1. Examine the cutting equipment for damage or
cracks. Always replace a damaged cutting
equipment.
2. Look at the blade to see if it is damaged or blunt.
Note: It is necessary to balance the blade after it is
sharpened. Let a service center sharpen, replace and
balance the blade. If you hit an obstacle that causes the
product to stop, replace the damaged blade. Let the
service center estimate if the blade can be sharpened or
must be replaced.
To replace the blade
1. Lock the blade with a block of wood.(Fig. 42 )
2. Remove the blade bolt.
3. Remove the blade.
4. Examine the blade support and blade bolt to see if
there are damages.
5. Examine the engine shaft to make sure that it is not
bent.
6. When you attach the new blade, point the angled
ends of the blade in the direction of the cutting cover.
(Fig. 43 )
7. Make sure that the blade is aligned with the center of
the engine shaft.
8. Lock the blade with a block of wood. Attach the
spring washer and tighten the bolt and washer with a
torque of 45–60 Nm.(Fig. 44 )
Weekly Monthly
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349 - 003 - 24.10.2017