To adjust the speed limit, a diesel tachometer is used, which works according to the photo principle.
Draw a line with chalk on the shoulder of the V-belt pulley with a width of 1-2 cm.
Warm up the engine to an oil temperature of 50-70°.
The cold start accelerator button must be recessed.
All electrical consumers are off.
Give full throttle and measure the speed with a tachometer.
Set the speed to 4800 rpm with the adjusting screw.
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