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Tune-Up Specifications - Massey-Ferguson & Ferguson

This data has been gathered from old out-of-print material. While we make every effort to be accurate, the information shown is to be used for general reference only. It is always best to have the original service or operator's manual for your tractor before attempting any tuneup.

There is a legend at the bottom of the page describing some of the terms used here.

Model Point Gap Spark Plug Gap Timing Mark On Spark Occurs Firing Order Int. Valve Clearance Exh. Valve Clearance Comments
TO-20, 30 .020 .025 FLY TDC 1-3-4-2 .014H .014H  
MF 65,85,88,90 (Gas) .022 .026 FLY 5 deg BTDC 1-3-4-2 .016H .018H Spark for MF65 is 6 deg BTC
MF 35, TO-35, MF-50, MH-50 .022 .025 FLY 5 deg BTDC 1-3-4-2 .013H .013H  
MH Pacer(16), Pony .020 .025 FLY 4 deg BTDC 1-3-4-2 .012C .013C For spark, Pony set at paint line
MH Colt(21), Mustang(23) .020 .025 FLY TDC 1-3-4-2 .014H .014H  

Legend
  • TDC - Top Dead Center
  • FP - Crankshaft Fan Drive Pulley
  • Exh - Exhaust
  • Int - Intake
  • ATDC - After Top Dead Center
  • BTDC - Before Top Dead Center
Data collected from an old Niehoff tune-up chart.


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