Settings; Speed Adjustments; Idling Speed Setting In No-Load Conditions; Full Speed Setting In No-Load Conditions (Standard) - Kohler KD 625/2 Workshop Manual

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SETTINGS

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SPEED ADJUSTMENTS

WARNING
- Adjustments should be carried out by Kohler authorised personnel
only.
- Any tampering with the adjustment immediately makes the
warranty null and void.

Idling speed setting in no-load conditions

After filling with oil and fuel, start the engine and let it warm up for 10
minutes.
Adjust idling speed at 1000÷1100 r.p.m. by turning setscrew 1; then
tighten lock nut.

Full speed setting in no-load conditions (standard)

After setting idle speed turn screw 2 and set full speed in no-load con-
ditions at 3200 r.p.m.; then tighten lock nut.
Note: When the engine reaches the pre-set power full speed stabilizes
at 3000 r. p. m.
Not valid on EPA engines, on which it is not possible to modify the
adjustment of the maximum.

Injection pump delivery setting

Important
This adjustment must be performed with the engine connected to the
dynamometric brake. Without this the regulation is approximate.

lnjection pump delivery limiting and extra fuel device

Limiting device C limits the injection pump maximum delivery.
It also acts as a torque setting device since spring N opposes the resi-
stence of spring M inside the cylinder through lever L.
The torque setting device allows lever L to move over stroke H corre-
sponding to 0.15÷0.25 mm.
This consequently increases injection pump delivery with torque rea-
ching its peak value.
Note: In generator sets and power welders, the torque setting device
acts as a delivery limiter only.
It therefore does not feature spring M or stroke H.
KD 625-2 Workshop Manual_cod. ED0053029380_1° ed_ rev. 00