Caterpillar TK711

The Caterpillar TK711 is a track-mounted feller buncher in Cat's forest products line, built to carry a disc-saw felling head for cutting and bunching timber in a single pass. Cat's own SEBP3882 parts documentation ties the TK711 to the Cat C9 diesel, but used-market listings for earlier-build units show a Cat 3126 or 3126B under the hood instead, so the correct engine is production-year dependent rather than a single fixed spec. A certified operating weight and dimension set has not been reliably published for this specific model, though it sits in the mid-size class typical of track feller bunchers of its era. Production ran through the early-to-mid 2000s; no verifiable serial-prefix scheme survives independent cross-checking for this model, so confirm any specific unit through your dealer rather than a published PIN range. The base carrier was shared across a family of closely related TK-prefixed models (including the TK721, TK722, and TK732) differentiated mainly by engine and felling-head pairing. Felling heads offered on this platform were disc-saw units in the 22 to 26 in (560 to 660 mm) cutting-capacity class typical for this size of carrier.

The TK-prefixed lineup marks a brand transition rather than a distinct engineering generation: Caterpillar and Blount Inc. began jointly building and marketing former TimberKing-brand feller bunchers under both TimberKing and Cat nameplates starting in 2003, and Caterpillar folded the brand fully into its own forest products line by 2006, after which the same platform continued as non-TK-prefixed Cat models. That changeover window explains why engine sourcing varies across TK711 serials -- earlier builds carrying the 3126/3126B, later ones the C9 per Cat's parts catalog -- and buyers sourcing engine or fuel-system parts need to confirm the fitted engine by serial rather than assume one across the model. One source ties the undercarriage to Cat D6-series dozer heritage for its rails, sprockets, and rollers, which if accurate gives useful parts interchange options in a used market where TK711-specific stock is thin. Given its short, transitional production run and the general scarcity of published factory specifications, the TK711 today is mostly sourced and serviced by matching serial number to engine family and undercarriage component rather than by a single published spec sheet.

Below: full specifications, fluids & capacities, the factory service schedule, common service parts, verified fault codes, what owners discuss, attachment guidance, the complete assembly directory, and a serial-number reference. Complete parts lists with full OEM part numbers, exploded diagrams, quantities, and fitment data are available free in Heavy Parts AI.