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i have a karcher 4.91 which pulses during operation i have stripped it down and not found any obvious cracks but there is a dribble between the cylinder head and aluminium body during operation. do i need to replace the cylinder head or housing or seals etc???
Answer this Question (1 Answer)
- I assume that the machine pulses when you release the trigger. Any sign of a leak will cause this as the machine needs to maintain pressure in order to keep the motor switched off. Also, a pocket of trapped air within the valve gear will have a similar effect.
Genuine Pressure Washer Cylinder Head Stock Number: ES538413
Genuine spare part for select models of Karcher pressure washers
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