Friday, November 11, 2005

Specifications for early 125cc/160cc Victa 2 stroke mower engines

Bore:
  • 125cc .............................. 53.975mm (2.125")
  • 160cc .............................. 61.493mm (2.421")
Stoke ...................................... 53.975mm (2.125")
Piston taper:
  • Bottom of Skirt -
    • 125cc ......................... 53.848mm (2.120")
    • 160cc ......................... 61.366mm (2.416")
  • Top ring land -
    • 125cc ......................... 53.721mm (2.115")
    • 160cc ......................... 61.239mm (2.411")
Piston rings:
  • Numer .............................................. 2
  • Size -
    • 125cc ...... 2.381mm x 53.975mm (0.093" x 2.125")
    • 160cc ...... 2.381mm x 61.493mm (0.093" x 2.421")
Big end bearing type:
  • Early models ......................... 15 steel rollers
  • Late models ...................... Caged roller bearing
Little end type:
  • 125cc .................................... Bronze bush
  • 160cc -
    • Early models ........................ Bronze bush
    • Late models ............... Needle roller bearing
Connecting rod material ................ Hardened alloy steel
Crankpin material ...................... Hardened alloy steel
Crankshaft type ........................ Alloy steel forgings
                                    15 deg taper on drive end
                                 0.5 in B.S.F thread both ends

Crankshaft main bearings:
  • Type .................................... Ball bearing
  • Size -
    • Magnet side ................................ 20mm
    • Drive side (early models) .....20mm inner 17mm outer
    • Drive side (late models) ..20mm inner 20mm L.D. outer
Crankcase oil seals:
  • Drive side (early models) ........................... 17mm
  • Timing side (early models) .......................... 20mm
  • Both side (late models) ............................. 20mm
Ignition timing .............................. 3mm (1/8") btdc
Breaker point gap ............................ 0.50mm (0.020")
Spark plug gap .............................. 0.635mm (0.025")
Spark plug type ............ Contact your nearest Victa dealer
Fuel requirement ......... 2 stroke petrol-oil mixture (25:1)

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