|
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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