1981 John Deere 526, 726, 732, 826, 832, and 1032 Snow Blower Service Manual (P/N TM1234)

John Deere technical manual TM1234 (July 1981) covers service and repair of the 1981 526, 726, 732, 826, 832, and 1032 walk-behind snowblowers, including their Tecumseh H50, H70, H80, and HM100 Snow King winterized engines.

• Engine repair: Cylinder-head and breather service, valve-seat reconditioning, cylinder boring, piston-ring replacement, compression-release camshaft inspection, and governor adjustment.

• Fuel system: Float-type carburetor teardown, inspection, reassembly, and mixture adjustment, with troubleshooting for flooding, rough idle, stalling, and surging.

• Ignition and starting: Magneto testing and timing, breaker-point adjustment, recoil-starter overhaul, and diagnosis of round- and square-housing electric starters.

• Safety-start circuits: Model-specific wiring diagrams and tests for the key switch, throttle shorting clip, control switches, and safety-start module.

• Power train repair: Friction-disk traction drive, axle and differential overhaul, drive-belt replacement, clutch adjustment, and blower/auger gear case service.

• Service references: Machine and engine identification, inspection limits, torque charts, fuel and lubricant specifications, electrical test data, and service-tool references.

This manual suits mechanics experienced in small-engine repair, with access to the precision measuring equipment and electrical test tools used for engine and starter work.

Engine Repair and Recoil Starters

Internal components: Complete engine teardown and rebuild procedures distinguish mechanical and lobe-type compression-release camshafts, early H50 connecting-rod assemblies, and later connecting-rod designs. An exploded view identifies the crankshaft, connecting rod, piston, and related components.

Cylinder and valve work: Procedures cover bore taper and out-of-round inspection, valve-guide reaming, valve lapping, and valve-to-tappet clearance checks. Valve seats and guides are machined into the block; worn guides can be reamed for oversize valve stems.

Recoil-starter procedures are split between H50/H70 and H80/HM100 engines, with separate spring, pulley, and starter-dog assemblies.

Carburetor Service and Serial Breaks

Carburetor adjustment instructions distinguish 526/726/732 machines below serial 55001, 832 machines below 70001, and 726/826/832/1032 machines above 70001. These distinctions help match the adjustment procedure to the machine before carburetor work begins.

The carburetor exploded view accompanies float, needle-and-seat, throttle-shaft, and choke-shaft inspection. Cleaning guidance identifies a specific damage risk: compressed air applied to an assembled carburetor can collapse the float.

Magneto, Electric Starter and Safety-Start Diagnosis

Electric starter variants: The early round starter uses a rectifier to supply its DC motor; the later square starter uses an AC motor. Both connect to a 115-volt AC supply.

Separate procedures cover armature opens, shorts and grounds, brush and bearing replacement, Bendix-drive inspection, and rectifier-output testing. The round starter's rectifier is nonserviceable; the manual specifies complete starter replacement if it fails.

Safety-start wiring: The diagram and test sequence for 726/832 machines, serial 70001-95000, cover the clutch-handle and auger-control switches. Separate wiring and tests cover the 826/1032 system with left- and right-hand safety-lever switches.

Observe the manual's precautions for rotating belts and live-current starter tests; consult a qualified technician for advanced teardown or electrical work beyond your experience.

Traction Drive, Differential and Auger Repair

Drive-belt replacement procedures are separated at serial 70000/70001, with additional clutch-handle adjustment coverage for serial 70001-95000. Traction-drive inspection extends to the hex shaft, sprocket, support plate, limited-slip differential, and axle.

Exploded views of the traction drive and blower/auger assembly support component identification. Gear case procedures cover the worm and bronze gears, bushings, oil seals, and auger-shaft assembly.

On later machines, the housing-separation procedure warns that the brake arm can be damaged if it is not cleared before the body is tipped away from the blower shell.

Engine Specifications and Service Tools

Technical tables cover bore and stroke dimensions, ring gaps, valve clearances, wear tolerances, and component torque requirements. Cylinder-head tightening sequences, ignition-timing data, fuel capacities, crankcase lubrication, and gear case lubrication are also included.

Tool references include the JDM-49 piston ring expander, JDM-52 valve-seat service set, JDM-63A small-engine hone set, and TY1344 continuity tester. The dedicated service-tool section lists these as convenience tools.

PDF Navigation and Diagram Readability

The printable 174-page PDF includes one front cover, its blank reverse, and 17 further pages containing only headers or footers. Text search is unavailable; embedded bookmarks provide section and group navigation. Small labels in the two safety-start wiring diagrams are clearly legible when enlarged.