Husqvarna SMR 511 2012 I.E. Specifications - Operation - Maintenance page 88

If it is not, proceed as follows:
- on the right side, with a 27 mm Allen wrench, loosen
the locking nut (2) of the wheel axle;
- loosen the check nuts (3) on both chain tensioners with
a 12 mm wrench and work on the screws (4) with a 10
mm wrench to achieve the right tension;
- when the adjustment is completed, tighten the check
nuts (3) and the wheel axle nut (2).
Once adjustment is over, always check that chain has a
max. 5 mm (0.2 in.) gap.
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SPECIFICATIONS - OPERATION - MAINTENANCE
EN - 38
LUBRICATING THE CHAIN
Lubricate the chain following these instructions.
CAUTION*: Never use grease to lubricate
the chain. Grease helps to accumulate
dust and mud, which act as abrasive
and help to rapidly wear out the chain,
the front and rear sprockets.
Disassembling and cleaning
When particularly dirty, remove and clean the chain be-
fore lubrication. Proceed as follows.
- Set a stand or a block under the engine and see that
the rear wheel is lifted from the ground.
- Remove clip (1), master link (2), then remove chain (3).
To reassemble, follow the disassembly procedure in
reverse order, taking care to correctly position clip (1),
master link (2), and the corresponding O-rings.
- Make sure that chain is neither worn nor damaged. If
the rollers or the links are damaged, replace the chain
by following the instructions given in the Scheduled
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Maintenance Chart.
- Check front and rear sprockets for damage.
- Wash and lubricate chain as described in the relevant
paragraph.
- If the chain has been cut, refit it using the master link.
- Fit master link clip (1) so that the closed part is facing
chain direction of rotation, as shown in the figure below.
Note *:The master link is the most critical safety part
in the drive chain. Even if the master links are reus-
able when in good conditions, for safety purposes we
advise using a new master link when reassembling
the chain.
- Correctly adjust chain, as described in the relevant
paragraph.
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