Antique Tractor Resources - Tune-Up Specifications: Minneapolis-Moline

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

ZB .020 .025 FLY 1-3-4-2 .008H .010H For spark, 2-1/8" BDC (Gas & Distillate), 1-3/4" BDC (LP Gas)

ZA Series (Bat. Ign.) .020 .025 FLY 7 deg ATDC 1-3-4-2 .008H .010H

ZA Series (Mag. Ign.) .020 .025 FLY 8 deg ATDC 1-3-4-2 .008H .010H

V .020 .025 FLY DC 1-2-4-3 .006H .006H

UB,UTS .022 .024 FLY 1-3-4-2 .008H .010H For spark, 3-7/8" BDC (Gas), 4-1/8" BDC (LP Gas & Distillate)

U Series (Bat. Ign.) .020 .025 FLY 1-3-4-2 .008H .010H For spark, 7 deg ATDC (H. Comp.), 5 deg ATDC (L. Comp.)

U Series (Mag. Ign.) .020 .025 FLY 1-3-4-2 .008H .010H For spark, 10 deg ATDC (H. Comp), 8 deg ATDC (L. Comp.)

U-302 (Gas & LPG) .022 .024 FLY DC-1 1-3-4-2 .010H .018H

R Series .020 .025 FLY 1-3-4-2 .012H .014H For spark, 7 deg ATDC (L. Comp), 9 deg ATDC (H. Comp)

G-VI (LPG) .022 .015 FLY * * * 1-5-3-6-2-4 .008H .010H

GTA,GTB,GTC Series (Bat. Ign.) .020 .025 FLY 5 deg ATDC 1-3-4-2 .008H .010H

GTA,GTB (Mag. Ign.) .020 .025 FLY 8 deg ATDC 1-3-4-2 .008H .010H

GT .020 .030 FLY 1-3-4-2 .012H .014H For spark, 11/16" after DC 1-4 mark (H. Comp)

GB .020 .025 FLY TDC 1-3-4-2 .008H .010H

FT, FTA .020 .030 FLY C 1-4 1-3-4-2 .012H .014H

BF .020 .025 FLY TDC 1-2-4-3 .006H .008H

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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