13TS 700, TS 800
Problem Cause Remedy
Engine speed drops quickly under
load - low power
Air filter dirty Clean the air filter
Throttle shutter not opened fully Check linkage
Tank vent faulty Clean tank vent or replace if
necessary
Fuel pick-up body dirty Clean the pick-up body, fit a new
filter
Fuel strainers dirty Replace the fuel strainers
Leak in fuel line between tank and
fuel pump
Seal connections or install a new
fuel line
Setting of high speed screw H too
rich
Turn the high speed adjusting
screw H clockwise (leaner) – max.
up to the stop.
Main jet bores or ports blocked Clean the carburetor
Pump diaphragm damaged or
fatigued
Fit new pump diaphragm
Impulse hose damaged or kinked Fit new impulse hose
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