14 BT 130
Condition Cause Remedy
Engine speed drops quickly under
load – low power
Air filter dirty Check the air filter and replace if
necessary
Throttle shutter not opened fully Check throttle cable adjustment, re-
adjust if necessary
Leak in fuel suction hose between
tank and carburetor
Install a new fuel suction hose
Setting of high speed screw H too
rich
Check basic setting, correct if
necessary
Tank vent faulty Fit new tank vent
Fuel pickup body dirty Fit new pickup body
Fuel strainer dirty Clean fuel strainer in carburetor,
replace if necessary
Jets or ports dirty or blocked Clean the carburetor
Pump diaphragm damaged or
fatigued
Fit new pump diaphragm
Impulse hose kinked or damaged Position impulse hose without kinks
or replace if necessary
Ignition timing wrong, flywheel out
of adjustment
– key in flywheel has sheared off
Install new flywheel
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