O.K. EKS 1635, Manual

touch the ground. For safety reasons it is best to
keep a clearance of at least 20 cm. If you now see
growing traces of oil, the chain lubrication system is
working correctly. If there are no traces of oil at all,
try cleaning the oil outlet (4), the upper chain tensio-
ning borehole and the oil duct, or contact your
Customer Service. (Be sure to read the section
„Filling in chain oil and chain lubrication“ on this
point). Check the chain tension and retension if
necessary (see the section „Tensioning the saw
chain“ on this point). Make sure the chain brake is
working properly (see also the section „Releasing the
chain brake“).

7.  Assembling the chain bar and saw

chain

The machine must be unplugged.
- Important: The front finger guard (2) must
always be in the top (vertical) position.

The chain bar and saw chain are delivered separate-
ly. To assemble, first unscrew the nut (16) and remo-
ve the brake housing hood (15). The chain tensio-
ning bolt (13) must be in the center of the guide (5). If
necessary, tighten the chain tensioning bolt with the
chain tensioning screw (6). To prevent injury on the
sharp cutting edges, always wear gloves when
assembling, tensioning and checking the chain.
Before assembling the chain bar with the saw chain,
check the cutting direction of the teeth! The running
direction is marked with an arrow on the hood (15).
To determine the direction of cut, it may be neces-
sary to turn over the saw chain (7). Hold the chain
bar (8) vertically with the tip pointing upwards and
put on the saw chain (7), beginning at the tip of the
bar. Then assemble the chain bar with the saw chain
as follows: Place the chain bar with the saw chain on
the sword guide (5) and chain tensioning bolt (13).
Place the saw chain round the chain wheel (12) and
make sure it is correctly mounted (see Figure 1/Item
7). Place the hood (15) on top and tighten gently with
the nut (16).
Now the saw chain has to be correctly tensioned:

8. Tensioning the saw chain

Always pull the plug out of the power socket before
doing any work on the machine!
Wear safety gloves!
Make sure the saw chain (7) is inside the guide groo-
ve of the chain bar (8)!
Using a Phillips screwdriver, turn the chain tensio-
ning screw (6) clockwise until the saw chain is cor-
rectly tensioned. While the bolt (16a) is being tighte-

ned, the chain bar must then be pushed upwards.
Check the chain tension again (see Fig. 10). Do not
tension the chain too tightly. When cold, it should be
possible to lift the chain in the middle of the chain bar
approx. 5 mm. Tighten the nut (16a) securely.

When warm, the saw chain will expand and slacken
and there is a danger of it jumping off the rail alto-
gether. Retension if necessary. If the saw chain is
retensioned when hot, it must be loosened again
when the sawing work has been completed.
Otherwise, the contraction which takes place as the
chain cools would result in excessively high tension.
A new saw chain requires a running-in period of
approx. 5 minutes. Chain lubrication is very important
at this stage. After running in, check chain tension
and retension if necessary.

9. Filling in chain oil

To prevent dirt getting inside the tank, clean the oil
tank cap (3) before opening. Check the contents of
the oil tank during sawing work by checking the oil
gauge (21). Close the oil tank cap (3) tightly and
wipe away any spills.

10.  Chain lubrication

To prevent excessive wear, the saw chain and chain
bar must be evenly lubricated during operation.
Lubrication is automatic. Never work without chain
lubrication. If the chain runs dry, the entire cutting
apparatus will quickly become severely damaged. It
is therefore important to check both chain lubrication
and the oil gauge before every use (Fig. 9).
Never use the saw when the oil level is below the
„Minimum“ mark (Fig. 9).

Minimum - When only approx. 5 mm of oil is visi-
ble at the lower rim of the oil gauge (21), you
must top up with oil.

Maximum - Top up with oil until the window is
full.

11 Checking the automatic lubrication

Before commencing work, check the automatic chain
lubrication and oil gauge. Switch on the chainsaw
and hold it above light-colored ground. Be careful not
to allow the chainsaw to touch the ground. For safety
reasons it is best to keep a clearance of at least 20
cm. If you now see growing traces of oil, the chain
lubrication system is working correctly. If there are no
traces of oil at all, try cleaning the oil outlet (4), the

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