MTD 75 series - Page 4

ii
Chapter 4: The Fuel System and Governor
Fuel Line ......................................................................................................... 41
Inspect the fuel lines ....................................................................................... 41
Inspecting the fuel........................................................................................... 42
Test fuel for alcohol ......................................................................................... 42
Fuel filter ......................................................................................................... 43
Fuel tank vent ................................................................................................. 44
To test the cap vent ........................................................................................ 44
The fuel tank ................................................................................................... 45
Choke .............................................................................................................. 47
Choke linkage ................................................................................................. 48
Primers............................................................................................................ 49
Evaporative (EVAP) emissions system ........................................................... 50
Troubleshooting the EVAP system ................................................................. 51
Roll over valve vent ......................................................................................... 52
Charcoal canister ............................................................................................ 53
Testing a charcoal canister ............................................................................. 54
Carburetors ..................................................................................................... 55
Inspecting the carburetor ................................................................................ 55
Disassembly and rebuilding the carburetor ..................................................... 55
Governor ......................................................................................................... 59
Governor arm .................................................................................................. 59
Governor shaft ................................................................................................ 60
Governor cup and the governor gear .............................................................. 61
Chapter 5: Lubrication
Oil type and quantity ....................................................................................... 63
Oil dip stick ...................................................................................................... 64
Dip stick tube removal ..................................................................................... 65
Lubrication system .......................................................................................... 66
Positive crankcase ventilation valve ................................................................ 67
Chapter 6: Starter and Charging Systems
Recoil Starter Removal ................................................................................... 69
Starter Cup ...................................................................................................... 69
Starter Rope .................................................................................................... 71
Starter pulley and recoil spring ....................................................................... 72
Electric starter ................................................................................................. 74
Electric starter switch ...................................................................................... 75
Charging system ............................................................................................. 79
Stator .............................................................................................................. 80
Rotor ............................................................................................................... 80