21
Using a screwdriver remove the 2 screws holding the
air cleaner assembly to the carburetor body. Then
remove the air cleaner assembly from the engine.
Remove the carburetor and intake/reed assembly if
equipped.
NOTE:
The horizontal 840 thru 850 engines use a piston
port intake system and do not have reed block.
EXHAUST PORT CLEANING
Remove the muffler and gasket from the engine.
EXHAUST PORT CLEANING.
The exhaust ports
should be cleaned after each seventy-five (75) to one
hundred (100) hours of use.
Before cleaning the ports place the piston in the Bottom
Dead Center position. Then clean the ports using a
pointed 3/8' diameter wooden dowel or similar tool. Be
sure not to scratch the port area. Also remember to
remove all the loose carbon particles from the engine.
NOTE:
The small compression relief hole drilled up into
the cylinder must be checked as well. This hole allows
for easy starting.
COMPRESSION
RELEASE HOLE
840 - 850 DISASSEMBLY
MODEL 840-850 DISASSEMBLY.
Disconnect the high
tension lead from the spark plug. Remove the spark
plug with a 3/4' deep reach socket.
Before removing the fuel tank, drain the fuel into an
approved container outdoors, away from any open
flame.
www.mymowerparts.com
For Discount Tecumseh Engine Parts Call 606-678-9623 or 606-561-4983
