Checking The Chain Lubrication; Adjusting The Carburetor - Dolmar PS-410 Instruction Manual

Checking the chain lubrication

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Adjusting the carburetor

IMPORTANT: Carburetor adjustment may be done only by
a DOLMAR service centre!
SERVICE
Do not undertake adjustments to the adjusting screws (H)
and (L) without a tachometer! Improper adjustment can
lead to engine damage!
The adjusting screws (H) and (L) are factory (only for EU‑coun‑
tries) set almost all the way out (turned counterclockwise).
A tachometer is necessary to adjust the adjusting screws
(H) and (L), because exceeding the permissible maximum
speed leads to overheating and under-lubrication. This can
damage the engine!
The only user-adjustable setting is the idle adjusting screw
(Speed). If the blade rotates in idle (without the throttle pressed),
it is absolutely necessary to correct the idle speed before
using the tool!
Do not adjust the idle speed until the machine has been
completely assembled and checked!
Adjust the idle speed only with the engine warm, a clean
air filter, and properly installed cutting tool.
Use a screwdriver (blade width 4 mm, part No. 944 340 00)
to adjust the screw.
Never work with the chain saw withoute sufficient chain lubrica‑
tion. Otherwise the service life of the chain and guide bar will
be reduced.
Before starting work check the oil level in the tank and the oil
feed.
Check the oil feed rate as described below:
‑ Start the chain saw.
‑ Hold the running chain saw approx. 5 cm above a trunk or
the ground (use an appropriate base).
If the lubrication is sufficient, you will see a light oil trace be‑
cause oil will be flung off the sawing device. Pay attention to the
direction the wind is blowing and avoid unnecessary exposure
to the oil spray!
Setting the idle speed
Turn out the idle adjusting screw (Speed) (counterclockwise):
Idle speed drops.
Turn in the idle adjusting screw (Speed) (clockwise):
Idle speed goes up.
Caution: If after this adjustment the cutting tool still rotates
during idle, do NOT work with the unit! Take it to a DOLMAR
service centre!
Note: Carburetor adjustment is necessary for optimum
engine performance, for safer and more economical ope-
ration.
Only for EU-countries:
In order to comply with new emissions legislation, limits have
been placed on the carburetor adjusting screws (H) and (L).
This limitation (to about 80 degrees) prevents an excessively
rich mixture. On some models the (H) screw is also sealed. This
ensures compliance with emissions rules as well as optimum
engine performance and economical fuel consumption.
speed
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