Chain Lubrication; Disassembling And Cleaning; Washing Chain Without O-Rings (Tc); Lubricating Chain Without O-Rings (Tc) - Husqvarna TC449 Workshop Manual

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SETTINGS AND ADJUSTMENTS

Chain lubrication

Lubricate the chain following these instructions.
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 before lubrication. Proceed
as follows:
- Set a stand or a block under the engine and see that the rear wheel is lifted
from the ground.
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- remove clip (1), master link (2), then remove chain (3).
Make sure that the chain is neither worn out nor damaged. If the rollers or the
links are damaged, replace the chain by following the instructions given in the
Scheduled Maintenance Chart. Ensure that the sprockets are not damaged.
Wash and clean the chain as described hereunder.

Washing chain without O-rings (TC)

Wash using petroleum or naphtha. If you use fuel or especially trichloroethylene,
dry and lubricate the chain to avoid oxidisation.
Washing chain with O-rings (TE - TXC - SMR)
Wash using petroleum, naphtha or paraffin oil. Never use fuel, trichloroethylene
or solvents, as the O-rings may get damaged.
Use instead special sprays for chains with O-rings.

Lubricating chain without O-rings (TC)

After drying, dip the chain in Molybdenum Disulphide chain lubricant, if possible,
or in warm high-viscosity engine oil (if warmed up, oil will be more fluid).
As an alternative, you can use suitable spray lubricants

Lubricating chain with O-rings (TE - TXC - SMR)

Lubricate all metallic and rubber (O-ring) elements using a brush and engine oil
with SAE 80-90 viscosity, inside and outside parts.
Assemble the master link clip (1) by setting the closed side facing the chain
direction of rotation, as shown in the figure.
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As an alternative, you can use suitable spray lubricants
The master link is the most critical safety part in the drive chain. Even if
the master links are reusable when in good conditions, for safety purposes
we advise using a new master link when reassembling the chain.
Accurately adjust the chain as described in the relevant paragraph.
The chain lubricant shall NEVER get in contact with the tyres or the rear
brake disc.
Chain tensioner roller, chain guide roller, chain guide, chain slider
Check the wear of the above-mentioned elements and replace them when
necessary.
Check the chain guide alignment, and remember that a bent element can cause
chain early wear. In this case, chain might unwrap from the sprocket.
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1 edition (08-2010) _Rev. 11-2010
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