My pb 770 -h blower will not turn off when I hit the kill switch. Instead I have to flip the choke on the back of the blower to shut it off

SOURCE: hi. How many wires come out off the handles

There are 2 wires. 1) ground and 1) to switch. It sounds like you have a bad switch.

SOURCE: Kill switch on Stihl BG 75 leaf blower not working

when engine cool,, spray wd 40 into the switch and work it a dozen or so times and clen it out

Nomad

• 166 Answers
• Posted on Jul 11, 2011

SOURCE: pb-413 blower. starts w choke,

Most likely there's a problem with fuel supply - choking cuts air supply optimizing the air/fuel mix. Most common solution is to check and clean the carburetor.

If there's a tiny fuel filter in the fuel line between tank and carburetor check it on excessive pollution. Replace it when necessary.

When opening the blower for carburetor cleaning - also check the airfilter and replace when dirty.

If never opened the blower - take pictures with a digital camera at each step. The pictures can help with assembly after cleaning.