Stihl MS 650 and MS 660 chainsaw carburetor removal and refitting guide will help with any carburetor cleaning, replacement, inspection and correct running of the chainsaw. A Service Manual detailing the Carburetor removal and refitting procedures, as well as more complete chainsaw repair information, is available to download. Also a Stihl MS650 and MS660 Parts List, Operator Manual, and carburetor manual are also available to view or download as a PDF which can be read on any device or printed.

Carburetor

Removing and Installing

The following servicing procedures show a carburetor without limiter caps. The procedures are exactly the same on carburetors with limiter caps.

 

• • Unscrew the nuts (arrows).

• • Pull off the flange (1).

• • Remove the filter base (arrow).

– Wash the filter mesh in the filter base thoroughly in a fresh, non- flammable cleaning solution and blow out with compressed air.

If filter mesh is damaged, install a new filter base.

Reassemble in the reverse sequence.

• Remove filter base – b 12.1
• Pull the grommet (1) off the adjusting screws and out of the housing.

– Open the throttle wide.

• • Hold the throttle shaft (1) steady (arrow).
  • Release the throttle trigger and take the rod (2) out of the throttle shaft.

1

MS 650, MS 660 Chainsaw with carburetor heating

• • • Remove the baffle plate (1).
• Pull the heating element off the studs.

All Chainsaws

• Before fitting the carburetor, check that the sleeve (1) and washer (2) are in place.

• • Fit the grommet so that the tabs

(1) engage behind the inside of the housing.

• On machines with carburetor heating, make sure that wiring is properly positioned – b 15.2
  • Pull the fuel hose (1) off the carburetor.

1

• When pushing the carburetor into position, check that the impulse hose (1) is correctly seated.

• Connect the fuel hose (2).
  • Remove the carburetor.

Reassemble in the reverse sequence.

• Squeeze the throttle trigger and hook the rod (2) to the throttle shaft (1).

Stihl MS 650 and MS 660 Chainsaw Carburetor removal and refitting.