Stihl MS 661 C-M

72 MS 661, MS 661 C-M
8.7.3 Engine speed drops under load
– engine down on power
– Look for fault in fuel
system, check engine for
leaks,
b 13.5, b 6.2
– Check the air filter and clean or
replace if necessary, b 13.1
Troubleshooting completed
Power tool in order?
yes
no
Engine speed drops under load –
low power
– Calibrate the control unit,
b