Massey Ferguson Tractor Counter/Anti Clock wise Tachometer-MF 35, 133, 135, 140

What It Is

This is a replacement tachometer for Massey Ferguson tractors, specifically designed to measure engine RPM in either a clockwise or counter-clockwise rotation. It’s intended for vintage MF models (35, 133, 135, 140) used in farming, mowing, or general utility work where monitoring engine speed is critical for PTO operation or fuel efficiency.

Fitment & Compatibility

Before buying, verify these three things:

• Rotation direction: This tach works in both clockwise and counter-clockwise drive configurations. Check your tractor’s cable drive rotation by observing the existing tach or cable end—some MF 35/135 models use a clockwise cable, others counter-clockwise. If unsure, remove the old tach and spin the cable by hand to confirm direction.
• Model specificity: Fits MF 35, 133, 135, and 140 tractors. Does NOT fit MF 65, 165, or later models without modification. Cross-reference your tractor’s serial number—early MF 35s (pre-1960) may have different mounting.
• Cable type: This is a tachometer head only—you’ll need a separate drive cable (often sold separately). Measure the cable length from the engine drive port to the dash; common lengths are 24-36 inches. Aftermarket cables from brands like Sparex or AGCO are compatible.
• Mounting hole pattern: The tach face diameter is typically 3.375 inches. Ensure your dash cutout matches—if not, you may need a trim ring or adapter.

Key Things to Know

• Accuracy: At 3.9 stars with 14 reviews, expect decent reliability but not lab-grade precision. Some users report slight RPM drift at high idle—fine for mowing, less ideal for precise PTO work.
• Installation difficulty: Moderate. Requires removing the old tach, attaching the cable, and securing the new unit. You may need a small wrench and patience with the dash mounting screw—access is tight on MF 135s.
• Common gotcha: The tach may not include a gasket or seal. If your dash is exposed to rain or dust, buy a rubber gasket separately to prevent moisture ingress.
• Cable compatibility: Some users find the cable fitting is slightly loose—use a small O-ring or thread tape to snug the connection. Do not overtighten; the plastic housing can crack.

Should You Buy It

Buy this if you need a budget-friendly, direct-fit replacement for a worn-out tach on a vintage MF 35, 133, 135, or 140, and you’re comfortable with basic wrenching. Skip it if you require high precision for constant PTO work, or if you want a sealed, weatherproof unit—you’ll need to spend more on an OEM or premium aftermarket tach.