Yanmar Mini Excavator Undercarriage Parts: Tracks and Rollers Guide

Yanmar mini excavators run a compact undercarriage loop matched by model generation and serial number: rubber tracks, rollers, idler, sprocket, and hardware. The parts guide covers the track sizes, the steel parts, and the part-number basics that settle a Yanmar order. For a Quebec contractor running Yanmar compact equipment, the undercarriage plan is what keeps the machine working.

Related reading: for the fitment hub, see our rubber track fitment guide, and for the mini-excavator parts map, see our mini excavator guide.

Yanmar Compact Excavator Lineup

Yanmar's compact excavator range spans the mini class, and each model generation uses a matched undercarriage. The range is compact, but the configurations differ by generation.

The parts map starts with the model and serial number. Yanmar machines of the same name can carry different undercarriages across years, and the serial number settles which one applies.

The compact range also shares parts within families, which helps a fleet that runs several Yanmar models: the shared rollers and tracks go on one spares list, and the model-specific parts stay on the per-machine record. The sharing is the planning advantage of a compact lineup.

Rubber Track Sizes for Yanmar Models: Width, Pitch, Count

Yanmar excavator tracks are matched by width, pitch, and link count, with the size code on the old track as the fastest confirmation. The track drives through the sprocket, so the pitch has to match the drive.

Confirm the track size against the model generation and the serial number before ordering. A Yanmar track that is right in width but wrong in pitch will skip on the drive.

How Rollers, Idlers, and Sprockets Fit Yanmar Compact Machines

Yanmar bottom rollers and carrier rollers are matched by diameter, flange style, and mounting, and the front idler sets the track line. Each position uses a matched part.

Identify the steel parts by position and part number, and inspect for the compact-machine pattern: roller flats, weeping seals, and idler flange wear. Replace the worn positions with the track change where the readings align.

The steel parts on a compact machine wear by the site: urban work shows seal wear and flats from varied duty, while abrasive sites show flange loss and profile wear. Reading the pattern tells the mechanic whether the part is reporting on the machine or on the ground, and the two need different replacement timing.

Yanmar Part Number Basics

Yanmar part numbers identify the component family and configuration, and the number is read from the part or the parts book. Photograph the old part number before removal and cross-reference it with the supplier.

Match the part number against the serial-number parts book; the two together are what make the fitment confirmation real. When they agree, the fit is confirmed.

The photograph matters because Yanmar numbers are stamped into the part and can be worn or painted over by service. A photo taken before removal captures the number the parts book can match, and it saves the measuring and cross-referencing that a missing number forces.

The photo also documents the position and the mounting, which the supplier can read alongside the number when the cross-reference needs a second input.

Wear Issues on Yanmar Undercarriages

Yanmar compact undercarriages wear by the compact-machine pattern: track lug and body wear on abrasive sites, roller flats under load, and idler flange loss over hours. The pattern follows the duty.

Measure the track, rollers, and idler at every service and record the readings with the hours. The trend schedules the replacement.

The rental pattern deserves a separate line on a Yanmar used by renters: the duty changes with every job, and the return inspection catches the wear the renters leave behind. Checking the undercarriage at every return keeps the compact machine ready for the next contract.

Buying Yanmar Parts Online in Canada: Confirm Fitment First

Buy Yanmar undercarriage parts from a supplier that confirms fitment against the serial number, quotes in CAD, and documents the warranty. The confirmation and the delivery window matter as much as the price.

Keep the fitment confirmation and the invoice with the machine record. The file is the warranty reference and the starting point for the next order.

The online order should also confirm the hardware and the quantity with the part: the roller set count, the hardware included, and the delivery window. The complete order is what keeps the compact Yanmar machine to one stop instead of a second order.

The delivery window should be matched to the maintenance stop, because the compact machine's schedule depends on the parts arriving ahead of the idle period.

Yanmar fitment field	What it settles
Machine model and generation	The undercarriage family
Machine serial number	The exact configuration
Old part number or size code, photographed	The component cross-reference
Position in the undercarriage	The right part for the position
Cross-reference against the serial number	The aftermarket match

See the Rubber Track collection and the Track Roller collection for your Yanmar machine.

Questions to Ask Before You Order

• What track size and pitch does my Yanmar serial number use?
• Which roller, idler, and sprocket part numbers apply?
• Is the aftermarket specification compared in writing before dispatch?

Frequently Asked Questions

Which Yanmar compact models share track sizes?

Sharing is strongest between models in the same size class. The serial-number parts book settles which track sizes and rollers cross.

Where is the Yanmar part number read on the machine?

The number is stamped into the part or listed in the parts book. Photograph it before removal, because service wear can make it unreadable later.

Which Yanmar part is most often misordered?

The idler is a common miss on compact machines because the flange style looks similar across models. Confirm the position and part number together.

This article is part of the rubber tracks guide, which covers how the size code works, tread patterns, compounds and buying a set in Canada.