UBS Hydro II
Faults / fault removal
EN
2018-05-02
48 / 60
Fault
Possible causes
Remedy
fastening
Firmly plug the spark-plug terminal on
the spark plug
Fuel line is plugged or fuel is bad
Replace fuel filter or fill in fresh fuel
Ventilation in the fuel tank cap
plugged
Replace the fuel tank cap
Water or dirt in the fuel system
Discharge fuel and clean; fill in fresh
fuel
Air filter dirty
Clean the air filter or replace it
Gasifier wrongly adjusted
Adjust the gasifier
Petrol engine becomes too
hot
Too less engine oil
Immediately refill engine oil
Cooling air system restricted
Clean the fan grill; clean the internal
clean the cooling fins
Air filter dirty
Clean the air filter or replace it
Gasifier not correctly adjusted
Adjust the gasifier
Petrol engine has black-
outs at high speed
Ignition distance too small
Adjust spark plug
No-load mixture not correctly
adjusted
Adjust the gasifier
Petrol engine often goes
out at no load
Ignition distance too wide, spark
plug defective
Adjust or replace the spark plug
Gasifier not correctly adjusted
Adjust the gasifier
Air filter dirty
Clean the air filter or replace it
Petrol engine works
irregularly
Governor control linkage polluted,
jams
Clean the governor control linkage
Petrol engine does not go
out in Stop position
Engine-Stop line defective
Check the line and the connectors
Missing earth contact
Check the earth contact
Petrol engine too less
power
Air filter dirty
Clean the air filter or replace it
Cylinder head gasket loose or
gasket damaged
Tighten the cylinder head gasket;
replace seal
Too low compression
Get the engine checked
