ECHO PB-770T Backpack Gas Leaf Blower review

The PB-770T is the tube-control version, not the higher-output version

ECHO’s PB-770T is a gasoline backpack blower whose variable-speed control is mounted on the blower tube. That physical choice is its defining difference from the PB-770H, which moves the throttle control to the operator’s hip. The two share the same basic engine and published blower output: ECHO’s support table and current shared PB-770H/T manual list a 63.3 cc two-stroke engine, 756 CFM, and 234 mph maximum air speed with pipes for both models. A shopper should choose the T because a tube-mounted trigger and control position suit the job—not because the T is documented as more powerful.

What the tube-mounted control asks of your hands

ECHO identifies the PB-770T as a tube-mounted-throttle backpack blower. The manual describes its control as a throttle trigger plus a throttle-position/stop-switch button. The T’s hand therefore stays with the control assembly on the tube when adjusting speed; the PB-770H uses a hip-mounted throttle lever instead. ECHO also describes cruise control on the T, so sustained speed can be set without assuming the trigger has to be held at one position for every pass. The manual’s assembly sequence matters: it calls for hanging the handle freely before fitting it so the throttle cable is not twisted, and identifies cable adjustment as a PB-770T-specific maintenance item. This is a real control-layout and cable-care distinction, not a different airflow mode.

Both versions have a backpack harness, padded back support, flexible tube and a large fuel tank. ECHO lists the T at 21.6 lb dry without pipes and 19.3 inches wide; the H is 22.0 lb without pipes and 21.1 inches wide. Length and height are shared. ECHO’s product page lists 24.3 lb dry with standard pipes for the T, compared with 24.5 lb for the H. These are different stated configurations, not contradictions: the manual/support-table figure excludes pipes, while the page footnote includes standard pipes. Neither is the weight of the blower filled with fuel and ready for a long work session.

Published air figures are the same as the PB-770H

The exact ECHO page gives the PB-770T 756 CFM and 234 mph with blower pipes; the support specification table and operator manual confirm those values. They are manufacturer ratings rather than measured yard-clearance results. The product page also lists 33 N at the nozzle, but the support specification table and current operator manual do not provide a corresponding force entry. If your choice depends on a manual-backed force minimum, these sources do not establish one for this configuration.

The model uses 50:1 gasoline-and-two-stroke-oil mix, 89-octane unleaded fuel, and a 68.3-ounce tank. The manual specifies fuel restrictions, a recoil starter, choke and purge bulb, and warm-up instructions. That means no battery or charger is part of the operating plan, but it also means premixing, fuel storage, exhaust, and routine engine care stay with the owner. The design has a larger blower and harness than a handheld battery unit; if carrying a backpack is a concern, compare a genuinely different configuration instead of relying on the T/H suffix to solve it.

Know the safety and noise boundaries before comparing

The manual and support page give 73 dB(A) at 50 feet under ANSI B175.265. ECHO’s T product page lists 74 dB(A) with a different standard reference. Treat those as source- and method-specific manufacturer figures, not as an operator-ear measurement or a substitute for hearing protection. The manual calls for eye and hearing protection and a face-filter mask; it also says not to point the pipe at people or pets. It cautions against continuous low-speed operation because deposits can build up, directs at least five minutes at wide-open throttle each hour, and calls for spark-arrester inspection/cleaning after about 40 hours.

There is an exact-model safety issue to check for older equipment. ECHO’s 2015 important safety notice names certain PB-770T serial ranges and says fuel lines may become less flexible in extreme cold, crack or break, and create a possible fuel leak/fire hazard. ECHO says affected owners who have used the machines in those conditions should stop using them and contact an authorized dealer for inspection and, if needed, replacement. The notice is not titled a recall and does not identify every PB-770T as affected. The later operator manual states not to use below 15°F (-9°C); the earlier notice’s printed threshold appears misrendered, so use the later manual and have a dealer check the exact serial history. A model-page listing is not an individual serial-number clearance.

Where this version fits—and where it does not

The PB-770T belongs in a comparison for someone who has already decided on a 63.3 cc gasoline backpack and prefers a tube-mounted trigger/control over the H’s hip lever. It is not the right pick if your essential requirement is battery power, a handheld body, a verified force minimum, or vacuum collection. The Posi-loc blower pipes and the page’s 756 CFM/234 mph figures support blower work; the inspected manual does not document a vacuum tube or collection bag as part of this model’s function.

For a battery backpack alternative, EGO’s LB6000 family trades the PB-770T’s 756 CFM gas format for a 600 CFM battery tool, with different package/battery choices. For a lighter handheld alternative, the EGO LB7654 is listed at 765 CFM and 4.6 lb for the body. Neither is a direct power or carrying equivalent, but each changes fuel, start-up, weight and maintenance choices in a way that may matter more than throttle placement. Because exact serial/safety status for a prospective PB-770T remains unresolved, this entry is kept as a technical reference and out of buying recommendations. Compare it with the PB-770H for control placement, then verify the individual machine’s serial range and manual before relying on it.

ECHO PB-770T product page · ECHO PB-770H/T support specifications · ECHO PB-770T technical documents · ECHO PB-770 cold-weather safety notice