|
Tune-Up Specifications - Ford |
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
|
|
501,601,701 (Gas & LP) |
.025 |
.027 |
FLY |
4 deg BTDC |
1-2-4-3 |
.015H |
.015H |
For spark, LP set a 7 deg. |
|
600,700 (Gas & LP) |
.025 |
.027 |
FLY |
8 deg BTDC |
1-2-4-3 |
.015H |
.015H |
For spark, LP set at 11 deg. For spark plug gap, LPG set at .030 |
|
800,900 (Gas & LP) |
.025 |
.027 |
FLY |
5 deg BTDC |
1-2-4-3 |
.015H |
.015H |
For spark, LPG set at 8 deg. For spark plug gap, LPG set at .030 |
|
801,901,1801,2030 (Gas & LP) |
.025 |
.027 |
FLY |
4 deg BTDC |
1-2-4-3 |
.015H |
.015H |
for spark, LPG set at 7 deg. For spark plug gap, LPG set at .030 |
|
NAA,NAB |
.025 |
.027 |
FLY |
8 deg BTDC |
1-2-4-3 |
.015H |
.015H |
|
|
2N,8N,9N |
.015 |
.025 |
None |
TDC |
1-2-4-3 |
.010-.012C |
.014-.016C |
|
|
4030, 4040 |
.025 |
.027 |
FLY |
4 deg BTDC |
1-2-4-3 |
.015H |
.015H |
|
|
6000 (Gas) |
.030 |
.025 |
FP |
4 deg BTDC |
1-5-3-6-2-4 |
.015H |
.015H |
|
|
2000,3000 (Gas) |
.025 |
.025 |
FLY |
3 deg BTDC |
1/2/03 |
.015H |
.018H |
|
|
4000 (Gas) |
.025 |
.025 |
FLY |
3 deg BTDC |
1/2/03 |
.015H |
.018H |
|
|
5000,7000 (Gas) |
.025 |
.025 |
FLY |
2 deg BTDC |
1-3-4-2 |
.015H |
.018H |
For all Fords listed here and above, set timing at 475 RPM |
| 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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